gold in british columbia · the british columbia geological survey’s minfile database lists over...

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The British Columbia Geological Survey’s MINFILE database lists over 3,380 occurrences for which gold is identified as the primary commodity. Of these, approximately 700 have recorded gold production (400 lode producers and 300 placer). Between 1858 and 2013, about 32 million ounces were produced from lode deposits and 6 million ounces from placers. Remaining in-ground gold resources in the province are estimated at 280 million ounces. Gold in British Columbia Kerr - Sulphurets - Mitchell (KSM) Owned and operated by Seabridge Gold Inc. One of the largest undeveloped gold projects in the world Estimated 55 year mine life; average annual production of 508,000 oz gold Measured and Indicated gold resource of 49 Moz gold at 0.55 g/t Exploration ongoing Brucejack Proposed underground mine owned and operated by Pretium Resources Inc. High-grade gold deposit (14.7g/t) Total Measured and Indicated gold resource at 9.6 Moz Estimated 18 year mine life; average annual production of 400,000 - 500,000 oz gold Targeted to commence production in 2017 New Afton Owned and operated by New Gold Inc. Began production June 2012 The highest gold producing porphyry copper-gold mine in B.C. Estimated 12 year mine life; average annual production of 85,000 oz gold Measured and Indicated gold resource of 2 Moz gold at 0.68 g/t Contact Information Vancouver Mineral Development Office www.gov.bc.ca/mineraldevelopment Suite 300, 865 Hornby St. Vancouver, B.C. V6Z 2G3 Tel: (604) 660-3332 Fax (604) 775-0313 Production Resources Inventory Vein 1 2 Mesothermal Epithermal 36.7% 8.8% 9.3% 7.4% 12.4% 7.6% Skarn 3 16.3% 0.5% 2.2% Massive sulphide 4 5 Sedex Volcanogenic 9.7% 5.8% 0.5% 1.9% 1.5% 2.3% Porphyry 6 7 Alkalic Calcalkalic 6.0% 16.7% 16.1% 64.4% 15.1% 58.8% Note: Excludes deposit types under 0.1% * Inventory includes past and present reserves and resources Summary of B.C. Gold Production 1890-2013, Inventory, and Resources By Deposit Type 1 1 2 2 1 2 3 4 5 3 4 5 7 6 7 6 7 6 Production Inventory Resources 10 013 010 Kg 996 746 Kg 9 016 264 Kg * British Columbia Geological Survey Information Circular 2015-6 High grade gold intercept grading 41,582 g/t Au + 27,725 g/t Ag 3 5 4

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Page 1: Gold in British Columbia · The British Columbia Geological Survey’s MINFILE database lists over 3,380 occurrences for which gold is identified as the primary commodity. Of these,

The British Columbia Geological Survey’s MINFILE database lists over 3,380 occurrences for which gold is identified as the primary commodity. Of these, approximately 700 have recorded gold production (400 lode producers and 300 placer).

Between 1858 and 2013, about 32 million ounces were produced from lode deposits and 6 million ounces from placers.

Remaining in-ground gold resources in the province are estimated at 280 million ounces.

Gold in British Columbia

Kerr - Sulphurets - Mitchell (KSM) Owned and operated by Seabridge Gold Inc. One of the largest undeveloped gold projects in the world Estimated 55 year mine life; average annual production of 508,000 oz gold Measured and Indicated gold resource of 49 Moz gold at 0.55 g/t Exploration ongoing

Brucejack Proposed underground mine owned and operated by Pretium Resources Inc. High-grade gold deposit (14.7g/t) Total Measured and Indicated gold resource at 9.6 Moz Estimated 18 year mine life; average annual production of 400,000 - 500,000 oz gold Targeted to commence production in 2017

New Afton Owned and operated by New Gold Inc. Began production June 2012 The highest gold producing porphyry copper-gold mine in B.C. Estimated 12 year mine life; average annual production of 85,000 oz gold Measured and Indicated gold resource of 2 Moz gold at 0.68 g/t

* Inventory includes past and present reserves and resources

Contact Information

Vancouver Mineral Development Officewww.gov.bc.ca/mineraldevelopment

Suite 300, 865 Hornby St.Vancouver, B.C. V6Z 2G3Tel: (604) 660-3332Fax (604) 775-0313

Production Resources Inventory

Vein 1 2

Mesothermal Epithermal

36.7% 8.8%

9.3% 7.4%

12.4% 7.6%

Skarn 3 16.3% 0.5% 2.2%

Massive sulphide

4 5

Sedex Volcanogenic

9.7% 5.8%

0.5% 1.9%

1.5% 2.3%

Porphyry 67

Alkalic Calcalkalic

6.0% 16.7%

16.1% 64.4%

15.1% 58.8%

Note: Excludes deposit types under 0.1%* Inventory includes past and present reserves and resources

Summary of B.C. Gold Production 1890-2013,

Inventory, and Resources By Deposit Type

1

12

21

23

4

5

345

7

6

76

76

Production

Inventory

Resources

10 013 010 Kg

996 746 Kg 9 016 264 Kg

*

British Columbia Geological SurveyInformation Circular 2015-6

High grade gold intercept grading 41,582 g/t Au + 27,725 g/t Ag

354

Page 2: Gold in British Columbia · The British Columbia Geological Survey’s MINFILE database lists over 3,380 occurrences for which gold is identified as the primary commodity. Of these,

Atlin

Nelson

Masset

Kelowna

Nanaimo

Victoria

Kamloops

Smithers

Vancouver

Cranbrook

Revelstoke

Fort Nelson

Prince George

Williams Lake

Prince Rupert

Fort St. John

Campbell River

Iskut

Stewart

Red Chris

Snowfield

Prosperity

Mt. Milligan

Schaft Creek

Spanish Mountain

Blackwater

Galore Creek

Brucejack

Highland Valley Copper(Highland Valley)

KSM

Yellow Giant

Huckleberry *

*

*

*

*

*

Bell

Snip

Britannia

Surf Inlet

Hedley Camp

Kemess Camp

Equity Silver

Copper Mountain (Similco)

Island Copper

Premier Camp

Greenwood Camp

Rossland Camp

New Afton (Afton-Ajax)

Myra Falls Camp

Bralorne

Mt Polley

Eskay Creek

Sheep CreekCamp

Bonanza Ledge (Cariboo-Barkerville)

Geological Terrane

Alexander

Bridge River

Cache Creek

Cadwallader

Cassiar

Chilliwack

Coast PlutonicComplex

Crescent

Harrison

Methow

North America -basinal strata

North America -craton and cover

North America -platformal strata

Okanagan

Pacific Rim

Quesnellia

Slide Mountain

Stikinia

Wrangellia

Yukon-Tanana

0 100 200 300

Kilometers

CurrentProducer

Massive Sulphide-Volcanogenic

Porphyry Alkalic

Porphyry Calcalkalic

Skarn

Vein-Au-Quartz

Vein-Epithermal

Vein-Intrusion Related

Ports

Rail

Road

( ) Camp name *

*

*

(Bridge River)

*

PorphyriesPorphyry deposits contain most of B.C.’s gold resources and areits main source of gold production. Exploration for these polymetallic Cu-Mo-Au-Ag deposits has produced a database of over 1,400 porphyry-style mineral occurrences. Roughly 60 of these have gold resource estimates. Significant examples include Prosperity, Kemess Underground, Mt. Milligan, Galore Creek, Schaft Creek, Red Chris, New Afton, Mount Polley, Red Chris and KSM. The top 5 measured+indicated porphyry resource estimates alone account for over 100 million contained ounces as of 2015.

Volcanogenic Massive Sulphides (VMS)Although most VMS deposits mined in B.C. have recovered gold and silver as by-products (e.g. Myra Falls, Britannia), the high grade Eskay Creek mine was exceptional, with average grades of 47 g/t gold and 878 g/t silver. There is potential for the discovery of additional deposits like Eskay Creek between the communities of Stewart and Iskut.

VeinsHistorically, the main sources of gold in the province were mesothermal and epithermal veins. More than 400 veins yielded 14.6 million ounces, including more than 4 million ounces from the Bridge River Camp, 2.44 million ounces from the Rossland Camp, and 2 million ounces from the Premier Camp (epithermal veins). The Snip intrusion-related, shear-hosted vein ore body produced 1.07 million ounces at an average grade of 24 g/t, representing another attractive high-grade target type. Brucejack, a potential producer in northwest-ern B.C., is a transitional mesothermal to epithermal stockwork- and breccia- hosted deposit. The Blackwater Project, part of an emerging camp on the Nechako Plateau, has characteristics of both high and low sulphidation epithermal mineralization.

SkarnsMINFILE includes over 900 primary skarn occurrences, nearly 400 of which list gold among the commodities of interest. The largest gold skarn producer was Hedley (Nickel Plate) at 2.5 million ounces. The current producing Yellow Giant Camp includes skarn mineralization.

Updated July, 2015 Contributors: TS, GC, BN

B.C. Gold Producers (Primary and Byproduct) Top 20 By Rank (1890-2013)

Deposit/Camp Name *Current Producer †Primary Gold Producer ‡Past Producer

Gold Production

(Ounces)

Silver Production

(Ounces)

Bridge River Camp†‡ 4,176,386 952,085

Eskay Creek†‡ 3,268,279 158,889,701

Kemess Camp‡ 2,954,763 156,606

Hedley Camp †‡ 2,467,103 604,525

Rossland Camp †‡ 2,442,166 3,544,298

Premier Camp†‡ 2,086,206 42,997,561

Greenwood Camp†‡ 1,285,478 9,979,200

Cariboo-Barkerville Camp†* 1,267,027 149,522

Myra Falls Camp 1,171,870 28,835,944

Island Copper‡ 1,133,878 9,455,712

Snip†‡ 1,071,161 414,522

Mt Polley* 828,968 2,569,928

Similco Camp* 805,268 10,739,907

Afton-Ajax Camp* 779,028 3,383,342

Sheep Creek Camp †‡ 742,742 292,661

Equity Silver‡ 508,037 71,357,957

Britannia‡ 493,532 5,814,330

Bell‡ 414,293 1,232,008

Surf Inlet†‡ 388,875 201,207

Highland Valley Camp* 340,447 44,096,735

Total 28,625,507 395,667,751

Selected Gold Deposits in British ColumbiaB.C. Gold Deposits

Grade g/t

Mill

ion

oz A

u

KSM

Snow

field

Pros

perit

y

Red

Chris

Blac

kwat

er/

Dav

idso

n

Gal

ore

Cree

k

Scha

ft C

reek

Mt.

Mill

igan

Bruc

ejac

k

Mt.

Polle

y

Gold Resource Estimates (Measured and Indicated Categories)

B.C. Gold Deposit Types

For more information on B.C. mineral deposit profiles, visit:www.empr.gov.bc.ca/Mining/Geoscience/MineralDepositProfiles

0

0.2

0.4

0.6

0.8

1

1.2

0

10

20

30

40

50

60 Average Gold Grade

14

14.2

14

14.2

14

14.2

14

14.2

14

14.2

14

14.2

14

14.2

14

15