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File Created: 06-Jul-2012 by Garry J. Payie (GJP)
Last Edit:  10-Jul-2020 by Karl A. Flower (KAF)

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Name GM, ARC 18-21 Mining Division Liard
BCGS Map 104B067
Status Showing NTS Map 104B10E
Latitude 056º 37' 38'' UTM 09 (NAD 83)
Longitude 130º 42' 27'' Northing 6277200
Easting 395250
Commodities Gold, Copper, Lead, Zinc Deposit Types I06 : Cu+/-Ag quartz veins
L04 : Porphyry Cu +/- Mo +/- Au
L02 : Porphyry-related Au
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The GM showing area is underlain by a sequence of marine sedimentary and volcanic rocks of the Upper Stuhini Group. The stratigraphy has been intruded by Early Jurassic monzodioritic to gabbroic plutons. The showing is said to occur in bedded pyroclastic and epiclastic sequences.

Mineralization consists predominantly of pyrite and limonite, supplemented by lesser amounts of magnetite, hematite, chalcopyrite and malachite-azurite. The mineralization occurs in shears and brecciated zones up to several metres wide, along with sericite, calcite, chlorite, and silica alteration. The highest intensity of alteration and mineralization was noted adjacent to rhyodacite dykes crosscutting the formation.

The two highest gold results, 3.36 grams per tonne (#33808) and 170 parts per billion (#33709) come from an east-west trending quartz-pyrite-chalcopyrite vein, 0.5 to 1.0 metre wide, close to the contact with the intrusive (Assessment Report 21177). Copper values range up to 2.62 per cent, silver up to 42 grams per tonne, lead to 0.04 per cent, zinc to 0.16 per cent and arsenic to greater than 2000 parts per million (Assessment Report 21177).

In 1990, Santa Marina Gold Ltd conducted a program on the Arc 18-21 claims that consisted of geological mapping and prospecting in conjunction with geochemical rock sampling (149), limited soil sampling (44) and silt (33) and heavy mineral concentrate (9) sediment sampling. No previous work on the property is documented.

In 2006 and 2007, Hathor Exploration Ltd. completed a 7228.7 line-kilometre airborne geophysical survey on the area as the Snip claims of the Iskut project. In 2008, Max Minerals Ltd. examined the property.

EMPR OF 1990-16; 1994-1
GSC MAP 9-1957; 311A; 1418A
GSC P 89-1E, pp. 145-154
Cavey, G. (2008-11-14): Technical Report on the Iskut Project