vetas ppt

19
 PRESENTATION DISTRICT OF VET AS – SANTANDER REGION, COLOMBIA UPDATE EXPLORATION VETAS PROJECT FEBRUARY 2011  

Upload: diego-uribe

Post on 09-Jan-2016

10 views

Category:

Documents


0 download

DESCRIPTION

Presentación de PowerPoint sobre el enriquecimiento mineralogico, alteraciones, patrones estructurales y minería preexistente del distrito minero de Vetas (Santander)

TRANSCRIPT

Page 1: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 1/19

 

PRES ENTATI ON

D I S T R I C T O F V E TA S – S A N T A N D E R R E G I O N , C O L O M B I A

UPDATE EXPLORATI ON VETAS PROJ EC T

F E B R U A R Y 2 0 1 1  

Page 2: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 2/19

  Exploration

FOCUSED

Mining District of Vetas

Santander Region

Past & Present

- Source of gold production from pre-Colombian

times.

- Gold Operations operated by local miners.

Today (CB GOLD)

- Eight Properties Acquired 100%

- Acquisition in process: five properties (891 ha)

Near-Middle Term

- Small scale production being evaluated.

- Continue evaluation of other properties (district).

Vetas District

Page 3: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 3/19

  Vetas – Exploration

TARGETS

Veins System(Underground Workings located in 9 claims)

-Consists of high grade low

sulphidation epithermal veins.

-Approximately 6,000m underground

workings developed, of which 5,000m

is currently accessible for exploration.

-Mapping and Rock Sampling (surface

and underground) undertaken by CB

Gold from September 2009 to date.

POTOSI MINE

Page 4: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 4/19

  Vetas – Geological Sett ing

LOCAL GEOLOGY

A) Precambric Gneiss

-Metamorphic rocks (PBG)

related to Bucaramanga Gneiss,

consist of banded-quartz,

feldspar, hornblende and mica

gneisses.

-Hosts c.90% of the vein systems.

B) Intrusive Rocks

-Diorite to granitic composition

(Jurassic-Triassic) rocks intrudethe older basement rocks.

Younger intrusives maybe of

Tertiary age (such as Real Minera

property).

-Hosts c.10% of the vein systems.

INTRUSIVE ROCKS

PRECAMBRIC GNEISS

PRECAMBRIC GNEISS

Page 5: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 5/19

Page 6: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 6/19

  Vetas – Structural

1. STRUCTURAL CONTROL

The fracture system controlling

mineralization and alteration (veins

system) appears to be related to the

regional scale N30E and N60W

trending fault systems.

2. VEINS & SHEAR ZONES (SPLIT)

Au-Ag mineralization observed to date occurs

N30E, N40-60W and EW striking, vertical to sub-

vertical dipping to the north, along the quartz

veins and together with shear zones are hosted

in the metamorphic gneiss and intrusive rocks. 

SUBVERTICAL QTZ VEINS

QTZ VEINS (SPLITS)

GNEISS

Page 7: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 7/19

  Vetas – Structural

3. FAULTS & LINEAMENTS

The properties are part of the Vetas

Mining District where the small

mines and targets in the District are

concentrated along two blocksseparated by two small streams:

Cutac and Volcan, main lineaments

associated to faults related to

trending vein system (N30E, N40-

60W, EW).

The Northwest striking Cutac andVolcan fault zones appear to be the

principal structural controls on

mineralization in the Vetas and

Reyna de Oro areas respectively.

INTRUSIVE ROCKS

BLOCK 1

BLOCK 2

Page 8: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 8/19

  Vetas – Structural

4. MINERALIZED BLOCKS

BLOCK 1: 

Located to the west side of Cutac Stream,

related to El Dorado, La Providencia and

Trompeteros mines with N30W and EW

strike dipping to the north, with

geochemistry and high gold and silver

grades in each level indicating a down-

thrown block. Irregular presence of Cu, Pb

and Zn anomalies.

The preliminary interpretation indicates a

block which is higher up in the originalsystem and therefore been less eroded,

where lower levels can indicate the

presence of polymetallic + Au in economic

grades.

INTRUSIVE ROCKS

BLOCK 1

BLOCK 2

Page 9: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 9/19

  Vetas – Structural

4. MINERALIZED BLOCKS (Contin.)

BLOCK 2: Located between the Cutac and Volcan

streams and to the north by the El Salado

stream, Block 2 contains the Potosi, Los

Delirios, La Peter, Santa Isabel, RealMinera and San Antonio mines. Veins

have N30E and N40-60W strike, all

dipping to the north. Block 2 is upthrown

and geochemistry results show Au-Ag

high grade values with Cu, Pb, Zn and Mo

anomalous results.

Intrusion of granitoids rocks over thegneiss makes San Antonio property the

upper level; Reyna de Oro and intrusive

rocks the upper-middle level and Real

Minera, La Peter, San Bartolo, Chitarero,

Los Delirios, Tesorito and Potosi veins an

intermediate level.

INTRUSIVE ROCKS

BLOCK 1

BLOCK 2

Page 10: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 10/19

  Vetas – Structural

5. POTENTIAL

Block 1

Below the Au-Ag level there is strong

potential related to Au-Ag-Cu-Pb-Zn

levels mineralisation.

The immediate potential is along

strike SW containing veins with

N30W strike and dipping to the

north.

INTRUSIVE ROCKS

Au-Ag-Cu-Pb-Zn

Au-Ag

Au-Ag

BLOCK 1

BLOCK 2

Page 11: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 11/19

  Vetas – Structural

5. POTENTIAL (Cont.)

Block 2

This block has different levels where the

potential for further success is: below the

Au-Ag upper-intermediate level, the

stockwork zone, below the intemediatelevel which includes the San Bartolo,

Tesorito, Chitarero, Real Minera, La Peter,

Los Delirios and Potosi mines with Au-Ag-

Cu-Pb-Zn-Mo ocurrence potenial over

about 500m vertical.

The immediate potential is along the SE

strike

INTRUSIVE ROCKS

Au-Ag-Cu-Pb-Zn

Au-Ag

Au-Ag

BLOCK 1

BLOCK 2

Page 12: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 12/19

  Vetas – Stockwork

Stockwork (Disseminated bulk tonnage lower grade Au target)

- In Pre-Colombian times it was worked by the indigenous Sura, and then by the Spanish

through small open pits over the stockwork, known locally as Pozo del Rey or La Araña.

-Sampling each 50m of on surface shows significant anomalous Au values in both intrusive

and the surrounding gneiss stockwork (Real Minera)

Page 13: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 13/19

  Vetas – Stockwork

Stockwork (lower grade – Au)

- Consists of quartz-FeOx, white quartz and FeOx-quartz-pyrite multi-directional veinlets.

- Width from 1 to 5 cm and argillic and supergene alteration. Zone is 600m x 300 x 300m.

- The principal mineralization is associated with FeOx-Qtz-Py at surface with gold high

grades.High grades in Gold mineralization into the stockwork

Surface Rock Sample 50720: 1.53 g/t Au UG Rock Sample 21076:4.56 g/t Au

Page 14: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 14/19

  Real Minera – Dri ll ing Program

S40W STRIKING – ORIENTATION DRILL HOLE

Objective: Stockwork &Veins 

S25E STRIKING – ORIENTATION DRILL HOLE

Objective: Veins

Page 15: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 15/19

  Exploration – Vetas District

Intrusive – Stockwork & Veins zone

Gneiss – Veins zone

Page 16: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 16/19

  La Vereda - Geology

GEOLOGY

La Vereda project shows

outcrops of schists,

paragneisses, metasedimentsrelated to Precambric

Bucaramanga Gneiss (PBG)

and roof pendants of

sandstones of Silgara

Formation, within Paleozoic

Orthogneiss Formation (POF).

The ocurrence of gabbro (Gb)

related to Paleozoic plutonic

event and quartz diorite (QD)

associated to early Mesozoic

characterize the project.

CB Gold

Page 17: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 17/19

  La Vereda - Geology

STRUCTURAL 

Shears zone with N50E trend

and duplex structures. 

Mineralized Trend: Three

trends N50E:

1. North West

Lenght 2 Km (1.4 km

inside to Paramo Rico

tenement), width 0.5 km

2. Central

Lenght 2 Km , width of

0.25 km

3. South East:

Lenght 1.2 Km, width

0.25 km

1

2

3

CB Gold

Page 18: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 18/19

  Exploration – La Vereda Target

La Vereda

Space to Build (600 has)

Target hosts geophysycal anomalies along strike of

surface gold veins

Page 19: Vetas PPT

7/17/2019 Vetas PPT

http://slidepdf.com/reader/full/vetas-ppt 19/19

Environmental & Social Responsibility