rpt prosp tinkess op90-456 · accurassay laboratories ltd. p.o. box 604 kirkland lake, ontario,...
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SENT BY THUNDER BAY. ONT.111-28-90 2:iSPM : 18076236820^
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ACCURASSAY LABORATORIES LTD.P.O. BOX 426
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J1 ' TEL.: (705) 567-3361
President: Dr. GEORGE DUNCAN, M.SC.. Ph. D., c. omm (Out.), c. cham iu K.I. M.C.I.C.. M.R.ST., A.R.C.S.T.
Certificate of AnalysisR. Tinkess
FALLS, ONTARIO POX 1KO
SAMPLE NUMBERS Accurassay Customer
280408280409280410280411280412280412
140547140548140549140550140551140551
Goldppb
256
2711
23472178
Page: l
Date: November 28 19
Work Order tt Project
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BOULDER MINEAUGUST 15,
52 El
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ACCURASSAY LABORATORIES LTD.P.O. BOX 604
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J5 TEL.: (705) 567-6343
President: Dr. GEORGE DUNCAN, M.SC., Ph. D., c. Chem (OnO, c. Chem (U.K.), M.C.I.C., M.R.S.C., A.R.C.S.T.
Certificate of AnalysisCarry Clark
30545 Oval Bay Resources 1070 Lithium Dr. Unit lThunder Bay, Ontario P7B-6G3
SAMPLE NUMBERS Accurassay Customer
520135520136 52013"?520138520139520140520141520141
88018802880388048805880688078807
Gold ppb
819056322360
Date: Maw
Page :
__ 19
Work Order # Project
Gold Oz/T
T900237 Bould
^.001 ^.001
0.055 0.018 0.001 0.002 Check
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LF-30
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CUSTOMER COPY
Location:
^ o
BOULDER PROPERTY
Phillips Township, 2.0 kilometres west of Highway 71 (north of Nestor Falls), approximately 100 feet west of shore of Whitefish Bay, Lake of the Woods to shaft, Kenora Mining Division.
Access: via boat, road access could be created ("2.O kilometres of road).
Claims:
Contact:
15 unpatented mining claims - Kenora Mining Division
Bob Tinkess - Nestor Falls (807) 484-2707
Geology: contact zone between mafic volcanics and mafic intrusive (diorite gabbro). Regionally volcanic belt between two granitic stocks.
Mineralization and Alterations:up to 11 foot white glassy to sucrosic quartz vein with biotite, sericite, carbonate and pyrite on fracture. Strong biotite, chlorite alteration. Possible hornfels texture. Pyrite (up to 5 mm) on fracture of quartz veins. Minor sericite and biotite on fracture with visible gold.
Assays: Bob Tinkess up to ^.4 ounces gold per ton grab/same sample re-assayed by Ovalbay at 0.055 ounces gold per ton. Definite free gold problem.
Recommendations:No work since turn of century, trenching and sampling.
Needs prospecting,
o? 3 o
BOULDER PROPER!
SAMPLE NUMBER DESCRIPTION LOCATION
GOLD ASSAY
8801 chlorite, feldspar quartz schist with quartz vein- lets - glassy white, trace pyrite
8802 white glassy quartz vein, chlorite and biotite on fracture, trace pyrite
8803 chip of main vein - white glassy, blebs of pyrite (brassy), 2-3 mm cubes parallel fracture
8804 same as 8803, location of Tinkess - BNE-1
8805 biotite-chlorite schist with quartz carbonate, veinlets with chlorite biotite and trace pyrite (location same as Tinkess 5-0.4 oz. Au/ton)
8806 quartz veins fragments from dump, minor pyrite and biotite on fracture
8807 quartz vein - seam of pyrite (3 mm), minor biotite on fracture
south shaft (dump)
south shaft (dump)
south shaft (dump)
south shaft (dump)
north shaft (dump)
ppb
ppb
8
1905
north shaft (dump)
north shaft
632
23/60
Q?Id
ACCURASSAY LABORATORIES LTD.P.O. BOX 604
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J5 TEL.: (705) 567-6343
President: Dr. GE.ORGE DUNCAN, M.SC., PM. D., c. Chem ionu, c. Chem IU.K.I, M.C.I.c.. M.R.S.C., A.R.C.S.T.
Certificate of flnalysis30413
NESTOR FALLS-, ONTARIO POX IKO' -' ' '
Date: m- i j
Work Order tt : 1 61 Project :
SAMPLi Accurassay
274373274379274380274381274382274383274384274385274386274387274387274388274389274390274391274392274393,274394274395274395
NUMBERSCustomer
BlBNE--1
BNE-2 BNE-O BNE--4
2SH-1 2SH-2 2SH-3 2SH-4 BNV-3 BNV-3 BNV-4 BDS-1 BDS-2 BS-1 BS-2
25H-D-1 BVN-2 BVINO BVINO
Gold Oz/T
C.':o.*:o.*:0. <0. ''. O .0.0.0.^.<0.0.
<0,<0.*;o.<0. <0. <0. <0.*co.
004002002002002002095425066002002013002002002002002002002002
r
Check
Check
LF-30
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Per:
CUSTOMER COPY
ACCURASSAY LABORATORIES LTD.P.O. BOX 604
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J5 TEL.: (705) 567-6343
President: Dr. GEORGE DUNCAN, M .SC., PM. D., c. Chem (Om.i, c. Chem IU.K.I, M.C.I.c., M.R.s.c., A.R.C.S.T.
Certificate of Analysis30429
PALLS, ONTARIO
SAMPLE NUMB:Accurassay i
274380 i 274383274387274388
!RS'Customer
BNE-2 2SH-1 BNV-3 BNV-4
Copper ppm
30340
6884
Date: ___April 26
-"•' r Wot*" order # : •Project . :
Paae: l
__19__9.0
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LF-30 Per:
CUSTOMER COPY
ACCURASSAY LABORATORIES LTD,r JO. BOX 604
l
P2N3J5
l, C. Chan) (U.K.I. H.C.I.C., M .R.S.C., A.R.C.S.T.
:, R, Tinkess
Nestor Falls, Ontario POX 1KO
SAMPLE NUMBERS - Copper Accurassay Customer
279437279438279447279451
1451814519 1452B 14532
Page: l
Date: October 16_______ 19 90
Work Order t : 181585 Project :
Opfo-
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ACCURASSAY LABORATORIES LTD.KIRKLAND LAKE, ONTARIO, CANADA P2N 3J5
TEL: (705) 9674343
Presktent: . Wi. O.,
: ""- ''••- ! '* .---.' " -r:: -•••• '
, C. Owm (O.KJ, M.C.I.C., M.R.S.C., A.R.C.S.T.
28465 Mr - R- T inkessNestor Falls, Ontario POX 1KO
SAMPLE NUMBERS Accurassay Customer
279423279424279425279426279427279428279429279430279431279432279432279433279434279435279436279437279438279439279440279441279441279442279443279444279445279446279447279448279449279450279450
1450214504
14506^*
14507^ 14508" 14509 "14511-14512-14513-1451314514'14515^14516^14517^14518"14519^14520-14521-14522-
1452214523-14524-14525- 14526^ 14527- 14528^14529-14530-14531- 14531
Gold ppb
270329213307
46124913
109
<5
Date: October 17
Page: l
19 SO
Work Order ft Project
Gold Oz/T
181585
0.07S0.0850.096^.002<0.002
<0. <0. <0.<0.
002002002002002
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ACCURASSAY LABORATORIES LTD.
1
28466 Hr * R- T inkes*Kestor Falls, Ontario POX IKO
SAMPLE NUMBERS Accurassay Customer
279451279452279452
145321453314533
Gold ppb
Date:
Work Order l Project
CUGold Oz/T
<0.002 <0.002 ^.002 Check
17
Page: 2
19 ^p
181565
3ACCURASSAY LABORATORIES LTD.
P.O. BOX 426KIRKLAND LAKE, ONTARIO, CANADA P2N 3J1
TEL.: (705) 567-3361
President: Dr. GEORGE DUNCAN, M.SC!, Ph. D., c. Cham (Ont.), c. Chem IU.K.I, M.C.I. c., M.R.S.C., A.R.C.S.T.
Certificate of AnalysisMr . R . Tinkess NESTOR FALLS. ON POX 1KO
^
Page #1
Date: October 25 19
WORK ORDER : T9O0895 PROJECT :
SAMPLE NUMBERS ACCURASSAY CUSTOMER
534363534364534365
f)L WEIGHT f VI' - JlpULP ( g )
140501140503^140510
GOLD Oz/T
853.0 g 0.026750.0 g 0.022694.0 g (0.004
RESIDUE Oz/T
O. 0723 0.0075 0.0010
TOTAL ASSAY PERCENT Oz/T RECOVERY
0.0990.029(0.004
2774
ORIGINAL
ACCURASSAY LABORATORIES LTD.P.O. BOX 604
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J5 TEL.: 1705) 567-6343
President: Dr. GEORGE DUNCAN, M .SC., Ph. D., c. Chem (Ont.), c. Chem (U.K.), M.C.I.C., M.R.S.C., A.R.C.S.T.
Certificate of Analysis28533
Mr. R. Tlnkess
Nestor Falls, Ontario POX 1KO
Page: l
Date:November 9
1990
Work Order ft : 181610 Project :
SAMPLEAccurassay
280101280102280103280104280105280106280107280108280109280110280110280111280112280112
NUMBERSCustomer
140534140535140536140537140539140540140541140542140543140544140544140545140546140546
Goldppb
67663861
78
<5^4.S
GoldOz/T
^.002 --70.022 r0.112 S
0.002 .
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2ac '/6"QTZ(I5' STRIKE) MASS 2a l NO MIN
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ACCURASSAY LABORATORIES LTD.-^'^ P.O.BOX 604
KIRKLAND LAKE, ONTARIO, CANADA P2N SJBTEL: (706) 867^343
, M.R.S.C., A.R.C.S.T.
28465 Mr - R- T inkcssNestor Palls, Ontario POX 1KO
SAMPLE NUMBERS Accurassay Ci
279423279424279425279426279427279428279429279430279431279432279432279433279434279435 2-79436279437279438279439279440279441279441279442279443279444279445279446279447279448279449279450 2*79450
over
14502^14504^14505^14506^14507^14508-14509 -14511-14512-14513-1451314514-14515-^
14516"14517-14518-'^**"14519--r*vM d14520-14521-14522^14522^14523-14524-14525-1452614527-14528-^14529-14530-14531-14531-^
Goldppb
270329213307
46124913C5C5109
C5C5C5^5
741"'"/^l^
819C5C5X56
C5C5C5679722C5C5
Date: October 17
Page: l
19 tO
Work Order ft Project
Gold Oz/T
0.079 0.085 0.096
CO.002 CO.002 CO.002 CO.002 CO.002 CO.002 CO.002 CO.002 CO.002 CO.002 CO.002 CO.C02 0.022 CO.002 CO.002 CO.002 CO.002 CO,002 CO.002 CO.002 CO.002 CO.002 CO.002 0.002 0.003 CO.002 CO.002 CO.002
181585
Check
ACCURASSAY LABORATORIES LTD.P.O. BOX 426
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J1 TEL.: (705) 567-3361
President: Dr. GEORGE DUNCAN, M.SC!, Ph. D., c. Chem (Ont.), c. Chem (U.K.), M.C.I.C., M.R.S.C., A.R.C.S.T.
36047
Certificate of AnalysisMr . R. Tinkess NESTOR FALLS, ON POX 1KO
Page *1
Date: October 19 90
WORK ORDER: T9O0895 PROJECT:
SAMPLE NUMBERS rU UEIGHT
534363534364534365
140501140503140510
l
853.0 g750.0 g694.0 g
GOLDACCURASSAY CUSTOMER fV* . JpULP (g) Oz/T
*
RESIDUE TOTAL ASSAY PERCENT OZ/T Oz/T RECOVERY
0.0260.022^.004
0.07230.00750.0010
0.0990.029
^.004
2774
LF-30
ORIGINAL
ACCURASSAY LABORATORIES LTD.P.O. BOX 604
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J5 TEL.: (705) 567-6343
President: Dr. GEORGE DUNCAN, M.SC.. Ph. D., c. Chem tom.), c. Chem (U.K.), M.C.I.C., M.R.S.C., A.R.C.S.T.
Certificate of Analysis28533 Mr. R. Tlnkess
Nestor Falls, Ontario POX 1KO
Page: l
Date:November 9
1990
Work Order ft : 181610 Project :
SAMPLEAccurassay
280101280102280103280104280105280106280107280108280109280110280110280111280112280112
NUMBERSCustomer
140534140535140536140537140539140540140541140542140543140544140544140545140546140546
Goldppb
67663861
78
<5^X.5
GoldOz/T
^.0020.0220.112
0.002
^.002^.002
efaM&Ai?!
eteelt
Per: sijjjisb^
ACCURASSAY LABORATORIES LTD.P.O. BOX 426
KIRKLAND LAKE, ONTARIO, CANADA P2N 3J1 TEL.: (705) 567-3361
President: Dr. GEORGE DUNCAN, M .SC., Ph. D., c. Chem (Ont.i, c. chem (U.K.). M.C.I.C., M.R.S.C., A.R.C.S.T.
Certificate of Analysis
36270R. Tinkess
'NESTOR FALLS, ONTARIOPOX 1KO
SAMPLE NUMBERS Accurassay Customer
280104280105280106280107280108280111280112
140537140539140540140541140542140545140546
Copper ppm
9274012028
Page:
Date . November 14 19 90
Work Order # Project
Zinc ppm
181610
15323246
4048
V
\
Per:
ORIGINAL
93045'00"
L ft*
#"'**'
^S^i^-^f -:" ^*i\k tfy^Vsf y/ib? :^Np-^ ff JS\ fis'V^ 1(dfftuRfc CkJA^
newith numerous c /e/s/c dikes.
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GRID ZONE 16
ea.5967 PHILLIPS
ODMNA 4839
ONTARIO DEPARTMENT OF MINES AND XORTHKRN AFFAIRS
PRELIMINARY MAP P.731 GEOLOGICAL SERIES
CEDARTREE LAKE AREADISTRICT OF KENORA
Scale l inch to ^ rule
NTS Reference: 52 F/5SWODM-GSC Aeromagnetic Map: 1169G
ODM Geological Corpilation Series Map: 2115
LEGEND
CENOZOIC RECENT
Swarp and strearr deposits (unconsolidated)
PLEISTOCENESand, gravel, boulders , c lay (unconsolidated)
Unconf omity
PRECAMBRIAN .PROTEROZOIC
____ MAFIC INTRUSIVE ROCKS 10 10 Diabase
ARCHEANLATE MAFIC DIKES
9 Gabbro, diorite
Intrusive Contact
, lamprophyre
Intrusive Contact
_____ j 7 j
LATE FELSIC INTRUSIVE ROCKS 8a Foliated granodiorite8b Massive granodiorite and quartz monzonite 8c Massive diorite and monzonite 8d Inclusion-rich or contaminated diorite
Intrusive Contact
EARLY FELSIC INTRUSIVE ROCKS 7a Granodiorite 7b Feldspar porphyry3 7c O^iartz porphyrya 7d Fine-grained granodiorite and aplite
Intrusive Contact
MAFIC INTRUSIVE ROCKS 6a Amphibolite 3 6b Diorite, quartz gabbro 6c Anorthositic gabbro 6d Gabbro 6e Pyroxenite 6f Peridotite
Intrusive Contact
METASEDIMENT Sc5a Sandstone, volcanic sandstone5b Greywacke, tuff5c Conglomerate, volcanic conglomerate3d Argillite, slate5e Chert, siltstone
FELSIC METAVOLCA.MCSC4a Very fine grained rhyolite, rhyodacite 13 ,d4b Porphyritic rhyolite, rhyodaciteb,d4c Flow breccia^4d Breccia4e Lapillistone4f luffb
FELSIC TO INTERMEDIATE METAVOLCANICSc 3a Very fine grained dacite 0 3b Porphyritic dacite 0
^ 3c Flow Hreccia^ 3d Breccia 3e Lapillistone
INTERMED1ATL METAVOLCA^ICS C '2a Andesite?b Porphyritic andesite 0 2c Flow breccia, pillow breccia, rubble 2d Breccia 2e Lacillistone 2f Tuff
MAFIC MCTAVOLCANICSC la Andesite Ib Basalt le Coarse basalt 0 Id Breccia le Lapillistone If Tuff
Ipl Pillows
a) Ma\ in part be extrusive.b) "•lav in sart be intrusive.c) Fc- units 1-5, nunertcal order does not necessarily imply
L"ronological crder.d) These rock code numbers are not on this map but appear on maps of
ether parts of the Lake of the Woods area.
Note Where corbinaticns of codes, such as 2,3de or 3, li a re on the map, it implies 2de, 3de and 3f, 2f. Other similar code combinations have the sane assumption.
GEOLOGICAL AND MINING SYMBOLS
Glacial striae.
Area of bedrock outcrop.
y/^y l Bedding, top unknown; XX j (inclined, vertical).
Bedding, top indicated by arrow; (inclined, vertical, overt urned).
Bedding, top (arrow) from grain gradation; (inclined, vertical, overturned).
Bedding, top (arrow) from crossbedding; (inclined, vertical, overturned). Lava flow; top (arrow) from pillows shape and packing.
Schistosity, (inclined, vertical).
Gneissosity (inclined).
Foliation; (inclined, vert ical ) .
Lineation with plunge .
Geological boundary, observed.
"^T33TT' Geological boundary, J position interpreted.
a 132'MA
Lineament or fault.
Lineament.
Jointing; (horizontal, inclined, vertical).
Drag foli s with plunge.
Anticline, syncline with plunge.
Shaft; depth in feet.
Magnetic attraction.
METAL AND .MINERAL REFERENCE
Au Cu Mo
. . Gold
. . Copper
. . Molybdenum
S .Zn
Sulphides Zinc
LIST OF PROPERTIES AND DtPCSITS
Properties Deposits
1. Araax Exploration, Incorporated 7. Flint Lake Mine2. Canadian Arrow Mines Ltd. 8. Gold Sun Prospect3. Craibbe, H.K. 9. Soranda (Cates) Occurrence4. Dubenski, P.J. (Gold Fanner Mine)10. NOranda (Kenty) Occurrence5. Goldray Mines Limited 11. Noranda (Meahan) Occurrence6. McLennan, G.E. and Martin, R. 12. Selco (Jensen-Johnston) Occurrence
13. Sylvanite (Gauthier) Occurrence14. Sylvanite (Milree) Occurrence15. Sylvanite (Sewell) Occurrence16. Wair.puir. (Caswell-Williams) Prospect
Only current and defunct properties for which geological or related information is available are listed and located on the map.
MARGINAL NOTES
Location and Access: The area lies about halfway between the towns of Kenora and Fort Frances. Kakagi, Dogpaw, Caviar, and Flint Lakes are all directly accessible by boat from existing roads; aircraft based at NestcrFalls and Sioux Narrows provide access to all parts of the area.
^Mineral Exploration: Gold was discovered at the Gold Fanner Mine on Caviar Lake about 1898 and very minor production was recorded. Gold-bearing quartz veins were discovered northeast of Flint Lake in about 1900 but, though a mill was set up, there was officially no gold production. Most of the gold occurrences in the vicinity of Dogpaw and Flint Lakes were discovered between 1937 and 1947. At the Wampum Prospect, once called the Wajnpun Mine, a shaft was sunk at least 132 feet, but apparently no lateral development was done. The Selco gold occurrence north of Bag Lake was examined in 1961.
Base netal exploration programs have been carried out since 1955 by a number of companies, principally in the southern half of the area. At Weisner Lake a copper-zinc occurrence, now Goldray Mines Limited Property (5), was drilled by Noranda Mines Limited in,1961. The drilling of a number of geophysically anomalous zones has taken place since 1965.
General Geology: The rap-area Lies in the southeastern part of the type- Keewatin section described by Lawson (1885). The first geological map of the area is that of Mcinnes (1902). More detailed work was undertaken by Burwash (1933), and adjacent areas to the west and northeast have been mapped by Fraser (1943) and Davies (1971) respectively. A three-mile wide strip adjoining the west sice of the "tap-area was also mapped in 1971.
The oldest rocks of the area are fine- to medium-grained mafic flows with numerous pillows and rinor pillow and flow breccia. Although some of the coarser -rafic anphibolitic rocks within the flow sequence are interpreted as intrusive recks (unit 6a), they are considered to be genetically related tc the flows. Structure in the southwestern part of the area seems to be relatively sirple and the mafic extrusive rocks in this region represent the top of a 15,000-foot thick mafic metavolcanic unit. Strong foliation is in the mafic netavolcanics adjacent to the Aulneau Batholith which is about 8,000 feet to the west of the map-area.
The nafic rocks are overlain by intermediate pyroclastic rocks. Bedding is in some of the basal pvr clastic members with both concordant and, especially in the northwest, rn r jt c of Em- Bay, discordant relations with the mafic volcanics. The coarser clasts are mostly subrounded andesitic to dacitic porphyries. The thickest section of intermediate pyroclastic rocks, about 14,000 feet, coincides with the fold axial trace at Enro Bay; the rocks are envisaged as having accumulated in a subsiding trough, with some slumping along the trough slopes.
Above the intemediate pyroclastic rocks, though gradatlonal xi-th them, are about 4,000 feet of mixed felsic pyroclastic rocks and derived well- bedded siltstones and greywackes. The top of the netavolcanic section, exposed at Stephen Lake, consists of about 7,000 feet of felsic flows and partially bedded ash flows.
Differentiated ultramafic to mafic sills lie within the .intermediate to felsic pyroclastic rocks. The lovermost is a composite sill consisting at Emm Bay of at least" two separate intrusions. A second sill, extending through Cedartree Lake, contains a narrow ultramafic zone at the base and a coarse, so-iewhat pegmatitic section at the top. The third major sill contains a lower peridotite zone (absent over a length of 8,000 feet east of Cedartree Lake due to faulting) and an upper gabbroic zone. Both the second and third sills appear to have been emplaced along well-bedded horizons. The relationship of the sill south of the eastern part of Stephen lake to the other sills is not known, though it possibly is an offset section of the south limb of the upper sill.
The altered porphyries in the vicinity of Wapus Lake are interpreted to be the oldest of the felsic intrusions, possibly genetically related to the felsic pyroclastic rocks. The Little Stephen Lake felsic stock post dates the pyroclastic rocks; it is compositionally heterogeneous, has discordant contacts, and foliation is either poorly developed or absent.
Structural Geology: The principal structural feature is the major fault and shear zone which extenos through Dogpaw, Flint, and Stephen Lakes. This fault separates a northeastern section of essentially mafic netavolcanic rocks from a mafic to felsic section on the southwest. Relative movement may be mainly in a vertical direction with the northeast side up, but lineations indicate that movements may have been complex. Numerous other faults are evident in the well-exposed section of pyroclastic rocks and mafic sills; an intensely carbonatized zone at the base of the Emm Bay may be a fault zone. Within the mafic metavolcanic rocks evidence of faulting is difficult to establish.
Two fold axes, which trend east-northeast, are presumably truncated by the major fault zone. An anticlinal axis Is poorly defined but Iles in the vicinity of Wapus Lake. A synclinal axis is well defined near the south end of Cedartree Lake; but to the west the fold Is more open arid to the east the fold is obscured by granitic rocks. Isoclinal folding occurs within mafic metavolcanic rocks in the northwestern part of the map-area and possibly in the northeastern part, but elsewhere, except for the drag folds south of Stephen Lake, evidence of isoclinal folding is lacking.
Economic Geology: Most gold occurrences in the area are associated with quartz veins in sheared or fractured mafic to intermediate metavolcanic rocks or gabbro, or in porphyry dikes within these rocks. The veins are -nostly srall or discontinuous and the gold erratic. Gold is also reported (Assessment work files, ODMNA, Resident Geologist's of f *e , Kenora) from quartz veins ir. the tongue of quartz porphyry north of Peninsula Bay, adjacent to north-trending lineaments in the Little Stephen Lake Stock, and in a 50- to 100-foot wide carbonate zone between Kakagi Lake and Jessie Lake.
The felsic to intermediate pyroclastic rocks and derived bedded rocks contain pyrite and pyrrhotite in the vicinity of Stephen and Weisner Lakes. The sulphides appear tc be concentrated in specific stratigraphic horizons, e.g. above the felsic pyroclastic unit west of Stephen Lake where sulphides constitute about 5 percent of the rock, and are interpreted to be syngenetic. At Weisner Lake sphalerite and chalcopyrite also occur in streaks over drill-indicated widths of up to 50 feet; one 5-foot widt'h of core analyzed 3.8 percent zinc (Assessment work files, ODMNA, Resident Geologist's office, Kenora), but there is no available information on dimensions of mineralized zones.
Southeast of Derry Lake trenching across sheared mafic volcanic rocks revealed minor chalcopyrite in thin cross fractures, but geophysical surveys along strike of the shearing failed to establish continuity of the minerali zation (C. Cates, personal communication).
West of the Flint Lake-Stephen Lake portage disseminated fine-grained pyrrhotite constitutes up to 5 percent of the upper 50 feet of gabbro. For the most part, however, the mafic and ultramafic sills contain only traces of sulphides. Two very small occurrences of picrolite (asbestos) fibres up to i inch long were noted northwest of Wicks Lake and north of Erar. Bay.
References :
Burwash, E.M.1933: Geology of the Kakagi Lake area; Ontario Dept. Mines, Vol.42,
pt.4, p.41-92. Accompanied by Map 42b, scale^l inch to l mile.
Davies, J. C.1971: Geology of the Atikwa Lake area, District of Kenora; Ontario
Dept. Mines and Northern Affairs, OFR5055, 89p. Accompanied by Maps P.387, P.388, scale l inch to i mile.
Fraser, N.H.C.1943: Geology of che Whitefish Bay area, Lake of the Woods; Ontario
Dept. Mines, Vol.52, pt.4, 19p. (published 1945). Accompanied by Map 52c, scale l inch to l r.ile.
Lawson, A.C.1885: Report on the geology of the Lake of the Woods region with
special reference to the Keewatin (Huronian 1 ) belt of the Archean rocks; Geol. Sur\ . Canada, Ann. Kept., Vol.1, pt.C'C, 151CCp. Accompanied by Map 227, scale l inch to 2 T.iles.
Me Innis, William1902: Manitou Lake Sheet, District of Rainy River, Province of
Ontario; No.4, Geol. Sur\. Canada Map 720, scale l inch to 4 miles.
SOURCES OF INFORMATION
Geology by J.C. Davies, J.A. Morin, and assistants, 1971.Survey lines are shown only for property owned as of December l, 1971 and
coincide with survey lines showr^ or Claim t^ap No. 2585. Base map derived from maps of Fort-C ktsources Inventory, Ontario Department
of Lands and Forests, with minor rt\isions by J.C. Davies. Map 42b, Kakagi Lake area, District 01 Kenora, Onta-io; Ontario Department
Mines, 1933.ODM-GSC Aeroragnecic Kap 1169, Ca\ i ir l jke Sheet. Magnetic declination approximate l v ''t, 1971.
93045'00" lssued I 972 -
Parts of this publicaCLon mav bc quoted if credi.t LS gi\en to the Ontario Department of Mines and Northern Affairs. It is reconncndec chat reference to this T,ap De -ade in the following forr:
Davies. J. C., on' ^Dr^, j ^1972: Cedartree Lake area. District cf Kenora: Ontario Dc-pH. vlines anc
Northern. Affairs, PreUri. Map F.731, Geol. Ser.. scale l inch to , Tiile. Geology 1971 .
NOTES
LOCATION AMD ACCESS;.
The map-area lies about midway between the towns of Kenora and Fort Francis. Highway 71 provides direct access to an extensive lake system and most parts of the map-area are readily accessible by boat. Nestor Falls air base offers a functioning landing strip and float- equipped aircraft operate from Kakabikitchiwan Lake.
MINERAL EXPLORATION:
At the turn of the century several vein gold oc currences that had been discovered in the vicinity of Girard Lake were tested by exploratory shafts and workings. In 1899, a vertical shaft was sunk 140 feet on a gold* prospect known as the Trojan Mine located at the south end of Girard Lake. In 1932, a vertical shaft was sunk 200'feet and adit workings driven on a gold prospect, known as the Mascotte Mine, located on the southeastern 'hore of Girard Lake. Gold occurrences associated with *trong chear zones in the east-central part of Kakagi Lake on ground held and prospected by Noranda Mines Limited in 194'* and now held by HBOG and P.M. Martin: a revival of Interest in these occurrences has generated some recent staking activity.
Exploration for base metals in the map-area was ini tiated in 1956 when Kennco Explorations (Canada) Limited drilled four holes for an aggregate of 1,600 feet (488 m) east of Blacky Bay. In 1968, Selco Mining Corporation Limited drilled one short hole near a contact between peridotite and felsic pyroclastics in the central area of Kakagi Lake; the drilling followed an airborne INPUT geophysical survey in the previous year (Company records). Canadian Nickel Company Limited was active in the north- central part of the map-area in 1969 and drilled several holes totalling about 1,000 feet (305 m) (Regional Geologist's Files, Ontario Ministry of Natural Resources, Kenora).
In 1970, Amax Exploration, Incorporated carried out airborne and ground magnetic and electromagnetic surveys, geological mapping, and soil sampling covering an 18-claim group located on the southeastern shore of Kakagi Lake (Regional Geologist's Files, Ontario Ministry of Natural Resources, Kenora), and on a strike east of the area that was the scene of the earlier Kennco activity. HBOG Mining Limited has, since 1972, carried out further detailed geophysical surveys and trenching on the former Amax claim group (Regional Geologist's Files, Ontario Ministry of Natural^ Resources, Kenora), and also general exploration In the map-area.
GENERAL GEOLOGY:
The geology of the Crow Lake area has been previously described in the regional reconnai c sance mapping by Burwash (1933"). Part of Phillips Township is included in the regional geological mapping by Fraser (1943). Stratigraphic studies in the general area of Kakagi Lake by Goodwin (1965) have contributed to a broader appraisal of the regional volcano-tectonic framework. Geological mapping of the present map-area ties on to the north with that of Davies and Morin (1972).
Most of the map-area is occupied by a complex mafic- felsic metavolcanic sequence, the salient features of which are:
(i) a basal platform, more than 15,000 feet (4,570 m) thick, consisting mainly of massive and pil lowed basalt and andesite flows., A variolitic pillowed basalt unit (le), up to 800 feet (244 m) thick, pro vides a stratigraphic marker within the upper part of the mafic volcanic pile in the east-central part of the map-area; locally, similar minor variolitic flows are also found intercalated within felsic pyroclastics.
(li) a remarkable formation of Interbedded chert (unit 2m) and felsic tuff, tuffwacke and arkosic tuf fwacke (unit 2k) comprised of primary and partly water- reworked felsic pyroclastic material. A pyritiferous graphitic argillite unit (2n), 10 feet (3m) to 20 feet (6 m) thick, is located near the base of the formation. The formation attains its maximum thickness of about 6,000 feet ( \, 830 m) on the southern shore of Kakagi Lake ea,st of Blacky Bay. The chert l ", derived from "illca that,Is probably of volcanic exhalative origin.
(ill) a dominantly felsic pyroclastic accumulation that stratigraphlcally represents the upper component of the mafic-felsle volcanic sequence and which is more than 5,000 feet (1,524 m) thick. A wide variety of tuffs, lapilli-tuffs, tuff-breccia, and pyroclastic breccia are present. The pyroclastic rock terminology used is based mainly on size limits of volcanic fragments: tuff (up to 2 urn); lapilli-tuff (2 mm to 64 mm); and tuff- breccia and pyroclastic breccia (more than 64 mm). The site of a major paleo-vent or caldera may coincide with a conspicuous accumulation of collapse-breccia (unit 2j) that is found on the large island in central Kakagi Lake, 8,000 feet (2,450 m) west of Cha s anoint.
* * *
Differentiated ultramafic to mafic sills are conspic uously present within the felsic pyroclastic assemblage. Individual composite sills consist of two or more of the following units: peridotite (unit 4g), orthopyroxenite (unit 4e), clinopyroxenite (unit 4d), gabbro (unit 4b), and leuco- or anorthositic gabbro (unit 4c). Pyroxene peridotite and olivine pyroxenite (unit 4f) may occur as transitional phases of the peridotites.' Of signif icance is an occurrence, in the general area located 14,000 feet (4,267 m) southeast of Chase Point, of area located U',000 feet (4,267 m) southeast of Chase Point, of an ultramaflc-mafic composite.sill that lies within mafic flows. Many of the numerous mafic sills that are intercalated with mafic flows are 'also composite and they may consist entirely or in part of gabbro and clino pyroxenite units.
The northwestern and southwestern parts of the \ area are, respectively, occupied by granitic intrusive
rocks of the Alneau Batholith and the Pipestone Batholith. The latter is composittonally more complex, with abundant mafic xenollthlc material and hybrid ' phases; east of Highway J\, the batholith consists mainly of quartz-poor syeno- and monzodiorltic phases.
Adjacent^ to the granite batnollths are broad contact zones In whi^h[the metavolcanics'have been meta- morphosed to amphibolite facies metamorphic rank, In
' contrast t* the greenschist facies metamorphic rank ' prevalent elsewhere in the metavolcanic belt.
Ontario Division of Mines
HONOURABLE LEO BERNIER, Minister of Natural Resources W. Q. MACNEE, Deputy Minister of Natural Resources
G. A. Jewett. Executive Director, Division of Mines f. G. Pye. Director. Geological Branch
PRELIMINARY MAP P. 92 l GEOLOGICAL SERIES
CROW LAKE AREA(Eastern Part)DISTRICT OF KENORA
Scale l inch to ^ mile
NTS Reference: 52 E/1E, 52 F/4WODM-GSC Aeromagnetic Map: 1168C, 1176C
ODM Geological Compilation Series Map: 2115
Parts of this publication may be quoted if credit is given to the Ontario Division of Mines and the material is properly referenced.
STRUCTURAL GEOLOGY;
The distribution of rock-units of the metavolcanic belt is strongly affected by the five large-scale east- trending, tight isoclinal folds which have near-vertical axial planes and which plunge, generally, N to NNE at angles varying froi* 70 degrees to vertical. An intense schistosity, tectonic flattening and stretching is particularly developed in the axial and closure (nose) zones of the folds. Oblique, strike-slip, and axial- plane faults are present in the map-area and several prominent sets of sub-vertical faults, with significant displacements, may be recognized from an inspection of the map. Structural deformation In the metavolcanic belt Is evidently the-result of several 1 tectonic events of whlcA the most important is probably coincidental with the emplacement of the granite batholtths. l
ECONOMIC GEOLOGY:
arein shear zoaes zones In felsicas
the
Or J" st *ly schistose-
gold deposits and
lar**-twinag., low-grade and^hT? U extre^ly Inter-
soclated with fold and raulJ 2O"es that "e aa- merit further tnves^gatto
8tructure8
CENOZOICQUATERNARY
RECENT
LEGEND1 '
Swamp, stream, and lake deposits (unconsolidated)
PLEISTOCENEClay, silt, sand, gravel, boulder till
(unconsolidated)
Unconformity
PRECAMBRIANMIDDLE TO L^TE PRECAMBRIAN (PROTEROZOIC)
MAFIC INTRUSIVE ROCKSDiabase (dikes)
Intrusive Contact
EARLY PRECAMBRIAN (ARCHEAN) FELSIC INTRUSIVE ROCKS
5a Granite5b Granite, inclusion-rich or hybrid 5c Granite migmatite 5d Porphyritic quartz monzonite, monzonitic
granite 5f Felsite, aplite, pegmatite (dikes and
sills)5g Quartz monzodiorite, monzodiorite,
granodiorite
Intrusive Contact
METAMORPHOSED MAFIC AND ULTRAMAFIC INTRUSIVE ROCKS 4a Amphibolite
Gabbro, hornblende gabbroLeucogabbro, anorthositic gabbro
4d ClinopyroxeniteOrthopyroxenite
4f ' Olivine pyroxenite, pyroxene peridotitePeridotite
Intrusive Contact
METAMORPHOSED FELSIC INTRUSIVE ROCKS
occurrences ofserpentlnlzedIn the norther par of theoccurs as cross-fibremafic intrusion that
0 feet (2,440 m) southwest of a?f f
into the thi ch^
.outh limb f
jygEHENCES;
Burwart. E.M .
Morin, J.A.
N.H.C.
Coodwlir, A.M.
S967 PH l U. (PS
49 ^^ {\\\\ y,.4 , .^ WN r z-," //- - " "SjT-v***.* ' w^^sP";:)^kiMi M o n
w ;-\j
K.d f S ? tt , -- L^S-S/
IT,890.000N.
fend. anker i zed rock^-.^ -^r
f ——— l 's '~ 1* , ,\ , . .S]x ",:-'
GEOLOGICAL AND MINING SYMBOLS
Glacial striae.
Glacial fluting
Small bedrock outcrop
Area of bedrock outcrop.
Bedding, top unknown; (inclined, vertical).
Bedding, top (arrow) from grain gradation;
U1' asb S*M2S*Jteaf^\msi c r r* Schistosity; (inclined, vertical).
ib o 7 i . *t-t^l
Gneissosity; (inclined, vertical).
Foliation; (inclined, vertical, dip unknown).
Banding; (inclined, vertical).
Lineation with plunge.
SI tokens ides with plunge.' v ' ' I "'M
O\ ''x/ . X . *'** *. ^' /-*~ , /-, J ^St^^S^-'-^O^"^^- y* .v-;t i b Xw^- -^^^^^-^^x^f^^^ -^ 35*' * ** '~ ff\ CIL ^ ^ ^
Geological boundary, observed.
Geological boundary, position interpreted.
Fault.
Lineament or fault.
Jointing; (inclined, verttvca).
-- J^ — -'
r*ap**.* ; jK-N*^"? '-'.i. ~. 'z- ^^^ f^&^'Z^(~^:^^^ .J*"
.it 7:_-^k* ~Drag folds with plunge.
Anticline, syncline, axial trace, with plunge.' b -. * fDrill hole; (inclined).7——Magnetic attraction.
Mineral Occurrence.
Heronry f /oco/
W*t* e"Counteredplcrolttc
f"Cturs ln -" ultra- Upp9r
Twin (local ftom*)
METAL AND MINERAL REFERENCE
... asbestos
... gold
... magnetite
... malachite
pyrrhotite pyrite quartz quartz vein serpentine• v N , . ', ^^ \.' J \ ' ipx,'.;?,';,' \\\ A' x AM'
, __ l^r' V \ v _ -I-8!: \" ^— w ~?-^jr\ x 4b(\-*4^ y-^Qh-\jvv/?!^ —T~y *** _\ Jub^XTS /W\ /".*
LIST OF PROPERTIES FOR P.920 AND P. 9??
1. Brown, A. A. - ' '2. Canadian Nickel Company Limited3. HBOG Mining LimitedA. Kennco Explorations (Canada) Limited [1956]5. Martin, P.M.
v*\ *\ \ J-^SjftffiV
Date in square brackets denotes date of last major work on unclaimed parcels of land on which no mineral deposit has been discovered.
SOURCES OF INFORMATION
Geology by- 4..-Hiyb and assistants , 1973.Survey lines are shown only for property owned as of November- 30 r 1973 and coincide with survey lines shown on Claim MaosM.2102 and M.2475. v
Base map derived from Forest Resources Inventory, OntarioDivision Lands, with minor revisions by L. Kaye.
ODM-CSC Aeromagnetic Map 1168G, Kakagi Lake Sheet. ODM-GSC Aeromagnetic Map 1176C, Morson Sheet. Magnetic declination approximately 6O3'E, 1973.
75 x* v b
'^f" *../ .-•~ -^ /rf..
Information from this publication may be quoted if credit is given To the Ontario Division of Mines. It is recommended that reference to this map be made in the following form:
Crow Lake Area (Eastern Part), District of Kenora; Ontario Div. Mines, Prelim. Map P. 921, Geol. Ser., scale l inch to 4 mile. Geology 1973. 8y
3a Feldspar porphyry3b Quartz-feldspar porphyry3c Felsite dikes silis
Intrusive Contact
METAVOLCANICS AND METASEDIMENTSFELSIC TO INTERMEDIATE METAVOLCANICS AND
INTERCALATED METASEDIMENTS2a Tthyolite and rhyodacite2b Rhyolite-rhyodacite tuff2c Dacite2d Dacitic tuff2e Dacitic crystal tuff2f Silicic lapilli-tuff2g Dacitic lapilli-tuff2h Pyroclastic breccia and tuff-breccia2j Pyroclastic breccia ("collapse-breccia" J"*"
facies)2k' Arkosic tuffwackt, felsic tuffwacke 2m Chert and cherty tuff 2n Argillite (black, graphitic) 2p Massive hornblende dacite (may in part
be subvolcanic intrusive) 2v Sericite schist (derived from felsic
pyroclastics)
J1AFIC TO INTERMEDIATE METAVOLCANICSla AmphiboliteIb Massive basalt-andesite Lavale ' Coarse-grained basalt^)Id Porphyritic (plagioclase feldspar)
basaltle Subvolcanic basalt and trap dikesIf Tufflg Lapilli-tuffIp Pillowed basalt-andesite lavalv Variolitic pillowed andesite-basalt lava
1. This is basically a Field Legend and may be changed as a result of subsequent laboratory investigations.
2. May in part be intrusive.
2T0
rMARGINAL NOTES
LOCATION AND ACCESS;
The map-area lies -about midway between the towns ofSKenora and Fort Francis. Highway 71 provides direct access to an extensive lake system and mos.t parts of the map-area are readily accessible by boat. Nestor Falls air base offers a functioning landing strip and float- equipped aircraft operate from Kakabikitchiwan Lake.
Ontario Division of Mines
HONOURABLE LEO BERNIER, Minister of Natural Resources W. Q . M ACNEE, Deputy Minister of Natural Resources
G. A Jewett. Executive Director, Division of Mines E. G. Pye. Director, Geological Branch
MINERAL EXPLORATION:
At the turn of the century several vein gold oc currences that had been discovered in the vicinity of Girard Lake were tested by exploratory shafts and workings. In 1899, a vertical shaft was sunk 140 feet on a gold prospect known as the Trojan Mine located at the south end of Girard Lake. In 1932, a vertical shaft was sunk 200 feet and adit workings driven on a gold prospect, known as the Mascotte Mine, located on the southeastern shore of Girard Lake. Gold occurrences associated with strong chear zones in the east-central part of Kakagi Lake on ground held and prospected by Noranda Mines Limited in 1944 and now held by HBOG and F.M. Martin: a revival of interest in these occurrences has generated some recent staking activity.
Exploration for base metals in the map-area was ini tiated in 1956 when Kennco Explorations (Canada) Limited drilled four holes for an aggregate of 1,600 feet (418 m) east of Blacky Bay. In 1968, Selco Mining Corporation Limited drilled one short hole near a contact between peridotite and felsic pyroclastics in the central area of Kakagi Lake; the drilling followed an airborne INPUT geophysical survey in the previous year (Company records). Canadian Nickel Company Limited was active in the north- central part of the map-area in 1969 and drilled several holes totalling about 1,000 feet (305 m) (Regional Geologist's Files, Ontario Ministry of Natural Resources, Kenora).
In 1970, Amax Exploration, Incorporated carried out airborne and ground"magnetic and electromagnetic surveys, geological mapping, and soil samplfng covering an 18-claim group located on the southeastern shore of Kakagi Lake (Regional Geologist's Files, Ontario Ministry of Natural Resources, Kenora), and on a strike east of the area that was the scene of the earlier Kennco activity. HBOG Mining Limited has, since 1972, carried out further detailed geophysical surveys and trenching on the former Amax claim group (Regional Geologist's Files, Ontario Ministry of Natural Resources, Kenora), and also general exploration in the map-area.
PRELIMINARY MAP P. 920 GEOLOGICAL SERIES
CROW LAKE AREA(Western Part)
DISTRICT OF KENORA
Scale l inch to. k, mile
NTS Reference: 52 F/4W ODM-GSC Aeromagnetic Map: 1168G
ODM Geological Compilation -Series Map: 2115
Parts of this publication may be quoted if credit is given to the Ontario Division of Mines and the material is properly referenced.
.tt)
GENERAL GEOLOGY:
The geology of the Crow Lake area has been previously described in the regional reconnai c sance mapping by Burwash (1933). Part of Phillips Township is included in the regional geological mapping by Fraser (1943). Stratigraphic studies in the general area of Kakagi Lake by Goodwin (1965) have contributed to a broader appraisal of the regional volcano-tectonic framework. Geological napping of the present map-area ties on to the north with that of Davies and Morin (1972).
Most of the map-area is occupied by a complex mafic* felsic metavolcanic sequence, the salient features of which are:
. (i) a basal platform, more than 15,000 feet (4,570 m) thick, consisting mainly of massive and pil lowed basalt and andesite flows. A variolitic pillowed basalt unit (le), up to 800 feet (244 m) thick, pro vides a stratigraphic marker within the upper part of the mafic volcanic pile in the east-central part of the map-area; locally, similar minor variolitic flows are also found intercalated within felsic pyroclastics.
(il) a remarkable formation of interbedded chert (unit 2m) and felsic tuff, tuffwacke and arkosic tuf fwacke (unit 2k) comprised of primary and partly water- reworked felsic pyroclastic material. A pyritlferous graphitic argillite unit (2n), 10 feet (3m) to 20 feet (6 m) thick, is located near the base of the formation. The formation attains its maximum thickness of about 6,000 feet (1,830 m) on the southern shore of Kakagi Lake ea,st of Blacky Bay. The chert 19 derived from e ilica that is probably of volcanic exhalatlve origin.
(ill) a dominantly felsic 'pyroclastic accumulation that stratigraphically represents the upper component of the mafic-felsic volcanic sequence and which Is more than 5,000 feet (1,524 m) thick. A wide variety of tuffs, lapilli-tuffs, tuff-breccia, and pyroclastic breccia are present. The pyroclastic rock terminology used is based mainly on size limits of volcanic fragments; tuff (up to 2 mm); lapilli-tuff (2 mm to 64 mm); and tuff- breccia and pyroclastic breccia {more than 64 ram). The site of a major paleo-vent or caldera may coincide with a conspicuous accumulation of collapse-breccia (unit 2j) that is found on the large island in central Kakagi Lake, i 8,000 feet (2,450 m) west of Chase Point.
Differentiated ultramafic to mafic sills are conspic-t uously present within the felsic pyroclastic assemblage. Individual composite sills consist of two or more of the following units: peridotite (unit 4g), orthopyroxenite (unit 4e), clinopyroxenite (unit 4d),'gabbro (unit 4b),
( and leuco- or anorthositic gabbro (unit 4c). Pyroxene peridotite and olivine pyroxenite (unit 4f) may occur as transitional phases of the peridotites. Of signif- ' icance is an occurrence, in the general area located located 1ft,OCO feet (4,2*7 m) southeast of Chase Point, of an ultramaflc-mafic composite sill that Iles within* aflv flows. Many of the numerous mafic sills that are intercalated with mafic flows are also composite and they may consist *fe4c*ly or la part, of gabbro and clino pyroxenite units. ' 1 i
The northwestern and southwestern parts of the map- ' area are, respectively, occupied by granitic intrusive rocks of the Alneau Batholith and the Plpestpne Batholith. The latter is compositionally mo-re complex * with abundant mafic xenolithic material and hybrid ' phases; east of Highway 71, the batholith consists mainly of quartz-poor syeno- and monzodiorite phases.
Adjfecfent tp the granite batholiths are broad ' contact zones tn which the metavoLcanics have been mm morphosed to amphibolite facies metamorphic rank, In contrast to the greenschist facies metamorphic rank prevalent elsewhere tn the metavolcanic belt.
STRUCTURAL GEOLOGY;
distribution f rock -units of the metavolcanic , belt It , tvond.yVf f ectwd by the five large-scale ***t- trmdfbl, tight isoclinal fold* which Hcv* Mar^MfetaMt axial planes and which plunge, -generally, N to NNE at ! angles varying from 70 degrees to vertical. An intense schistosity, tectonic , flattening and stretching is particularly developed la the aglal and closure (nose) zones of the folds. Oblique, strike-slip, and axial. ' plane faults are present in the map-area and several prominent sets of sub-vertical faults, with significant displacement s, may be recognised from an inspection of the map. Structural deformation in th* metavolcanic belt is evidently the result of several tectonic events of which the most important is probably coincidental with the emplacement of the granite batholith*.
"* **mineralization- Ul the area. Most of tfc* fcnovn fftld oc currences era associated with quart* veins aa* stringers In *hear cones In basaltic flows, or in strongly schistose ones tn felsic to Intermediate pyroclastic rocks. Of about 40 grab-saaples collected by tft* author during the flsW season M4 analyst fer f*U W^fjpr-ky** Mineral \ Research Branch, Ontario Division of MUtts, all yielded st least a trace of gold. Two of the author's samples ' collected near the shafts at the Trojan Mine and, Mascotte Mine prospects yielded 0.13 ounce and 0.10 ounce gold per ton, respectively.
Two of the author's grab-samples taken from a strong vertically dipping, rusty schist son* exposed on the , southeastern shore of th* teland near the east-central boundary of the map-area (r.M/lEfrein elate). ware l analyzed by the Mineral Research Branch, Ontario Division of Mines and yielded 0.34 ounce and 0.04 ounce gold per ton respectively. The schist zone, which is about IS feet (4.6 m) wide and is traced for 150 feet (45.7 m) strikes generally N85E and Iles within a broad zone of shearing that Is In the hinge of Blacky Bay Syncline. In the light of current Interest in large-tonnage, low-grade gold deposits (this gold occurrence is extremely inter esting) and strong shear and schist zones that are as sociated with fold and fault structures in the map-area merit further investigation.
Sulphide mineralization was not observed within the ultramafic-mafic intrusive suite of rocks. Minor occurrences of cross-fibre picrolite asbestos In serpentinlzed peridotite sill rocks were encountered tn the northern part of the map-area; picrolite asbestos occurs as cross-fibre material in fractures In an ultra- mafic Intrusion that is located on the mainland, 8,000 feet (2,440 m) southwest of Cliff Point.
Sulphide mineralization, mainly pyrite, Is found In the thin.graphitic argillite beds near the base of the chert-felslc pyroclastic formation. Chalcopyrite and sphalerite are reported (Davies and Morin 1972) to occur l in a felsic pyroclastic unit east of Weisner Lake, in th* Cedfcrtree Lake area: this sane unit extends south ward into the present map-area and may be correlative with the chert-felslc pyroclastic formation occupying th* south limb of Blacky Bay Syncline.
Burwash. E.M. - .1953: Geology of the Kakagi Lake Area; Ontario Defft.
Mines, Vol.42, pt.4, p.41*92 (pubLifihed 1934). Accompanied by Map 42b, scale l Inch
: to l mile.
Davies, J.C., and Morin, J.A.1972: Cedartree Lake Area, District of Kenora;
Ontario Sept. Mines and Northern Affairs, Prelim. Map P.731, Geol. Ser., scale l Inch to fc mile. Geology 1971.
Fraser, N.H.C.1943: Geology of the Whitefish Bay Area, Lake
of the Woods; Ontario Dept. Mines, Vol.52, ' pt.4, 17p. (published 1945X., Accompanied by Map 52c, scale l Inchjto;^ mile.
Goodwin, A.M. , 1965: Preliminary Report on Volcanism and Min
eralization in the Lake of the Manitou Lake-Wablgoon Region of westem Ontario: Ontario^Dept. Mines, Prelim. Rept. 1*65-2, 63p. Accompanied by l map, scale l inch to 4 miles.
49015'00"^V-^'',Vc'l
Devils Hole
Anticline
\1 x'&Kv^kMWs !^Cfe^
t'Musk i e
CENOZOICQUATERNARY
RECENT
) u '.v v j r . ^ 6\
v\^t.A jjasfip
^^ '^''pm- ^ '^V^'Z&^S
c*---*:--, ,-iOs^\^\—
7'*?'-r?s--:
StevenstiwQjewunk ^
(Lake of the Woods; mi^-s?:-^wlW-'ff-
- -' ,-.~; raGEOLOGICAL AND MINING SYMBOLS
Glacial striae.
Glacial fluting.
Small bedrock outcrop.
Area of bedrock outcrop.
Crow Loke Locoliry
V •J',~—-^.*r "^
Bedding, top (arrow) from grain gradation;
I Lava flow; top (arrow from pillows shape and
Foliation; (incli-ned, vertical, dip unknown)
Banding; (inclined, vertical).
Lineation with plungey ;7 ; Slickensides with plunge
Geological boundary, observed
~ 1 Geological boundary, Jtosittoo interpr*ted
Fault.
Lineament or faxilt.
Jointing; (inclined, vertical).
Drag folds with plunge.
^\ JS\\ Anticline, syncline, axial trace, with blunge.
Drill hole; (inclined).
Shaft.
Adit.
Magnetic attraction
Mineral Occurrence.
METAL AND MINERAL REFERENCE
asbestos goldmagnetite malachite
x7 \ \ i v.W G I*V\ r
RE N l N,SULA
LEGEND
Swamp, stream, and lake deposits (ur.consolidated) .
Clay, silt, sand, gravel, boulder till (unconsolidated)
Unconformity
PRECAMBRIANMIDDLE TO LATE PRECAMBRIAN (PROTEROZOIC)
MAFIC INTRUSIVE ROCKS6 Diabase (dikes)
Intrusive Contact
EARLY PRECAMBRIAN (ARCHEAN) FELSIC INTRUSIVE ROCKS
5a Granite5b Granite, inclusion-rich or hybrid Se Granite migmatite 5d Porphyritic quartz monzonite, monzonitic
granite 5f Felsite, aplite, pegmatite (dikes and
sills)5g Quartz monzodiorite, monzodiorite,
granodiorite .
Intrusive Contact
METAMORPHOSED MAFIC AND ULTRAMAFIC INTRUSIVE ROCKS 4a Amphibolite
Gabbro, hornblende gabbro 4c Leucogabbro, aflbrthositic gabbro 4d Clinopyroxenite 4e Orthopyroxenite4f Olivine pyroxenite, pyroxene peridotite 4g Peridotite
Intrusive Contact
METAMORPHOSED FELSIC INTRUSIVE ROCKS 3a Feldspar porphyry 3b Quartz-feldspar porphyry 3c Felsite dikes sills
Intrusive Contact
METAVOLCANICS AND METASEDIMENTSFELSIC TO INTERMEDIATE METAVOLCANICS AND
INTERCALATED METASEDIMENTS2a Rhyolite and rhyodacite2b Rhyolite-rhyodacite tuff2c Dacite2d Dacitic tuff2e Dacitic crystal tuff2f Silicic lapilli-tuff2g Dacitic lapilli-tuff2h Pyroclastic breccia and tuff-breccia2 j Pyroclastic breccia ("collapse-breccia"
facies)2k Arkosic tuffwacke, felsic tuffwacke 2m Chert and cherty tuff 2n Argillite (black, graphitic) 2p Massive hornblende dacite (may in part
be subvolcanic intrusive) 2v Sericite schist (derived from felsic
pyroclastics)
MAFIC TO INTERMEDIATE METAVOLCANICSla AmphiboliteIb Massive basalt-andesite lavale Coarse-grained basalt(2)Id Porphyritic (plagioclase feldspar)
basaltle Subvolcanic basalt and trap dikesIf Tufflg Lapilli-tuffIp Pillowed basalt-andesite lavalv Variqlitic pillowed andesite-basalt lava
1. This is basically a Field Legend and may be changed as a result of subsequent laboratory investigations.
2. May in part be intrusive.
pyrrhotite pyrite quartz quartz vein serpentine
LIST OF PROPERTIES FOR P.920 AMD P.921
1. Brown, A.A.2. Canadian Nickel Company Limited3. HBOG Mining Limited4. Kennco Explorations (Canada) Limited [1956]5. Martin, F.M.
Date in square brackets denotes date of last major work on unclaimed parcels of land on which no mineral deposit has been discovered.
SOURCES OF INFORMATION
Geology by L. Kaye and assistants, 1973.Survey lines are shown only for property owned as of November
30, 1973 and coincide with survey lines shown on Claim MapsM.2102 and M.2475.
Base map derived from Forest Resources Inventory, OntarioDivision Lands, with minor revisions by L. Kaye.
ODM-GSC Aeromagnetic Map 1168G, Kakagi Lake Sheet. ODM-GSC Aeromagnetic Map 1176G, Morson Sheet. Magnetic declination approximately 60 3'E, 1973.
Issued 1974.
Information from this publication may be quoted if credit is given to the Ontario Division of Mines. It is recomnnxled that reference to this ittap be made in the following form:
Kaye, L.1974: Crow Lake Area (Western Part), District of
Kenora; Ontario Div. Mines, Prelim. Map P..920, Geol. Ser., scale l inch to k mile. Geology - 1973.