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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  30-Oct-2014 by Laura deGroot (LDG)

Summary Help Help

NMI 103P14 Mo1
Name EASTER, THM Mining Division Skeena
BCGS Map 103P083
Status Showing NTS Map 103P14W
Latitude 055º 49' 12'' UTM 09 (NAD 83)
Longitude 129º 24' 59'' Northing 6186125
Easting 473910
Commodities Molybdenum, Lead, Zinc Deposit Types L05 : Porphyry Mo (Low F- type)
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine, Bowser Lake
Capsule Geology

The Easter showing is located 2.5 kilometres northeast of White Lake, 38.5 kilometres north of Alice Arm. The area has been periodically explored for molybdenite mineralization.

The showing consists of a west trending body of biotite granodiorite, at least 2000 metres long and 240 to 370 metres wide, intruding folded Middle-Upper Jurassic Hazelton Group greywackes and argillite. These sediments, which strike 100 to 110 degrees, are granitized to the south of the intrusion but are only slightly hornfelsed near the contacts. The granodiorite is slightly sericitized near its margins. A series of 15 to 90 metre wide aplite and pegmatite dike swarms are developed within the intrusion and in the enclosing sediments. They form tight stockworks to the northeast, comprising up to 30 per cent of the rock. Individual dikes are up to 6 metres wide.

Molybdenite occurs as disseminations in the aplite and pegmatite dikes and in quartz veinlets within the granodiorite and sediments. Molybdenite is widespread in small amounts along fractures within the granodiorite. Pyrite, galena and sphalerite occur in a few quartz veins up to 2.5 centimetres wide.

Bibliography
EMPR AR 1966-44
EMPR ASS RPT *955, 8373, 9635
EMPR BULL 63
EMPR EXPL 1980-412
EMPR FIELDWORK 1985, pp. 219-224; 1988, pp. 233-240; 1990, pp. 235-243; 2005, pp. 1-4
EMPR MAP 8
EMPR OF 1986-2; 1994-14
EMPR PF (Prospectors Report 1994-39 by Nick Carter)
GSC MAP 1385A
GSC OF 864; 2931

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