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File Created: 18-Jun-1986 by Larry Jones (LDJ)
Last Edit:  22-Mar-1989 by Garry J. Payie (GJP)

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NMI 103F7 Cu1
Name BRENDAR, CONE HEAD, BEV Mining Division Skeena
BCGS Map 103F037
Status Showing NTS Map 103F07E
Latitude 053º 20' 29'' UTM 08 (NAD 83)
Longitude 132º 40' 36'' Northing 5912582
Easting 654790
Commodities Gold, Copper, Molybdenum Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The showing is located near the centre of the peninsula between Rennell Sound and Kano Inlet at an elevation between 61 and 610 metres.

In 1970 Texas Gulf Sulphur Company carried out topographic mapping, surface geology mapping, a geochemical silt survey of 100 samples covering Bev 1 to 14.

The area is underlain by granodiorite of the Middle Jurassic West Kano Batholith, (San Christoval Plutonic Suite) intruded by a Tertiary quartz monzonite porphyry stock ("Cone Head stock") which is probably corellative with the Central Kano Pluton (Kano Plutonic Suite). The rocks are cut by andesite dikes, felsite dikes, and intrusive breccia "pipes".

Quartz-tourmaline veinlets occur along fractures, predominantly in felsite and primarily as a stockwork.

Mineralization is spacially associated with the porphyry stock and appears to be structurally controlled. Chalcopyrite, molybdenite, pyrrhotite, and pyrite occur along quartz-sericite fracture planes and arsenopyrite is most frequent along faults or within adjacent calcareous rocks.

Gold mineralization is very erratic and appears related to late stage quartz veining, crackle breccia, and breccia pipes within and adjacent to the quartz monzonite porphyry. A sample of a quartz- tourmaline vein assayed 27.0 grams per tonne gold (Assessment Report 10280).

Bibliography
EMPR ASS RPT 9015, *10280, *16317
EMPR BULL 54
EMPR FIELDWORK 1997, p. 19-1-19-14
EMPR GEM 1970-100
GSC MAP 1385A
GSC P 86-20; 88-1E, pp. 213-216, 221-227; 89-1H, pp. 95-112, 117-120; 90-10, pp. 59-87, 465-487
PERS COMM (R.G. Anderson, Geological Survey of Canada, March, 1989)
EMPR PFD 650282, 840914, 861877

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