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File Created: 08-Aug-1986 by Larry Jones (LDJ)
Last Edit:  04-May-2021 by Del Ferguson (DF)

Summary Help Help

NMI
Name CROSSBREAK, YELLOW GIANT Mining Division Skeena
BCGS Map 103G040
Status Showing NTS Map 103G08E
Latitude 053º 22' 09'' UTM 09 (NAD 83)
Longitude 130º 10' 06'' Northing 5913975
Easting 422265
Commodities Gold, Silver, Zinc, Lead Deposit Types K04 : Au skarn
I02 : Intrusion-related Au pyrrhotite veins
Tectonic Belt Coast Crystalline Terrane Alexander
Capsule Geology

The Crossbreak showing is on the Yellow Giant property, situated on the west side of Banks Island, a coastal island located on the Hecate Straight approximately 110 kilometres south of Prince Rupert and 120 kilometres southwest of Kitimat. Nearby communities include Hartley Bay, which is located 55 kilometres to the east on the mainland, and Kitkatla, which is located 55 kilometres to the north on Dolphin Island. Banks Island is uninhabited and presently the only access to Banks Island is by air or by boat. Access is easiest by float plane or helicopter, which can be chartered from Prince Rupert.

Banks Island lies along the western edge of the Coast Plutonic Complex characterized by northwest trending granitic bodies, mainly granodiorite-quartz monzonite and quartz diorite which are separated by narrow, persistent Permian (?) or older metasedimentary belts, mainly crystalline limestone, micaceous quartzite skarn, and schist. The metasedimentary rocks generally exhibit a wide range of "granitization" effects and contact metasomatism.

The Crossbreak Zone occurs near the intersection of the east- northeast trending Crossbreak fault and the northwest trending Bank- Barge Lineament. Argillaceous quartzite, marble, and siltstone with graphitic horizons strike northwest and are displaced left laterally south of the Crossbreak fault. The rocks are complexly folded.

Disseminated pyrite, arsenopyrite, and minor sphalerite and galena occur in a distinctive argillaceous quartzite unit within a thick marble unit. The quartzite grades into biotite feldspar hornfels toward the fault. A 7 metre chip sample assayed 2.61 grams per tonne gold and a 2.3 metre drill intersection assayed 3.77 grams per tonne gold and 17.83 grams per tonne silver (Assessment Report 14171).

Banks Island Gold Ltd. continued exploration on the Yellow Giant property with an airborne VTEM survey in 2011 and exploration and confirmation drilling in 2012 and 2013 (Assessment Reports 33421, 33448 and 34684).

See Kim (103G 021), Discovery (103G 025), Tel (103G 026) and Bob (103G 024) showings for additional information and resource estimates.

Banks Island Gold Ltd. declared Commercial Production effective January 1, 2015. During the period of 2014 into 2015, mining was occurring in the Bob and Tel zones. On July 31, 2015, operations were suspended due to permitting and regulatory issues and in January 2016 Banks Island Gold filed for bankruptcy (Press Release - Banks Island Gold Ltd., August 4, 2015 and January 8, 2016).

Bibliography
EMPR ASS RPT 5518, 12719, *14171, 15759, 17503, *32794, 33421, 33448, *34684
EMPR EXPL 1975-174; 1976-162; 1984-372; 1985-C367
EMPR OF 2004-2
EMPR PF (Trader Resource Corp., Statement of Material Facts, Jan.13,
1986)
EMR MP CORPFILE (Trader Resource Corp.)
GSC MAP 23-1970
GSC P 70-41
GCNL #14, 1986
EMPR PFD 650012

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