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File Created: 11-Dec-2020 by Karl A. Flower (KAF)
Last Edit:  24-Mar-2022 by Nicole Barlow (NB)

Summary Help Help

NMI
Name ELECTRUM NORTHEAST, ERROR 1-8, JOK 6 Mining Division Omineca
BCGS Map 094E016
Status Showing NTS Map 094E02W
Latitude 057º 11' 46'' UTM 09 (NAD 83)
Longitude 126º 48' 53'' Northing 6341333
Easting 632039
Commodities Gold, Silver, Lead Deposit Types H05 : Epithermal Au-Ag: low sulphidation
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Electrum Northeast occurrence is located northwest of the Finlay River, approximately 9.5 kilometres northeast of the rivers’ junction with the Firesteel River.

The region is situated at the southern end of the Toodoggone Gold Camp, which lies within the eastern margin of the Intermontane Belt and is underlain by a northwest-trending belt of Paleozoic to Neogene sediments, volcanics and intrusions. The Electrum prospect is situated within a Mesozoic volcanic arc assemblage bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins.

Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Takla Group andesite flows and pyroclastic rocks. These Takla rocks have been intruded by plutons and other bodies of the mainly granodiorite to quartz monzonite Early Jurassic Black Lake Suite and are in turn unconformably overlain by or faulted against Lower Jurassic calc-alkaline volcanics of the Toodoggone Formation (Hazelton Group).

The dominant structures in the area are steeply dipping faults that define a prominent regional northwest structural fabric trending 140 to 170 degrees. In turn, high-angle, northeast-striking faults (approximately 060 degrees) appear to truncate and displace northwest-striking faults. Collectively, these faults form a boundary for variably rotated and tilted blocks underlain by monoclinal strata.

The occurrence area is underlain by Toodoggone Formation grey, orange and green andesite, and quartz-eye andesite crystal and crystal lapilli tuff. The contact between these two units is faulted. Lesser red, hematitic ash-fall tuffs interbedded with crystal tuffs also occur. These are variably chlorite and epidote altered. To the southeast, outcrops consist of Takla Group andesitic flows and volcanic tuff. The quartz monzonite to granodiorite Black Lake stock lies immediately to the west and intrudes Takla Group volcanics.

Locally, narrow (epithermal) quartz veins hosting pyrite and tetrahedrite have been traced along strike for approximately 50 metres.

In 2003, grab samples yielded up to 0.119 per cent lead, 80.76 grams per tonne gold and 187.6 grams per tonne silver (Assessment Report 27429).

Work History

The area has been explored in conjunction with the nearby Grace 1 (MINFILE 094E 129) and Electrum (MINFILE 094E 125) occurrences and a complete exploration history can be found there.

Bibliography
EMPR BULL 86
EMPR EXPL 1975-E163-E167; 1976-E175-E177; 1977-E216-E217; 1978-E244-E246; 1979-265-267; 1980-421-436; 1982-330-345; 1983-475-488; 1984-348-357; 1985-C349-C362; 1986-C388-C414; 1987-C328-C346; 1988-C185-C194; 1993-17; 1997-25; 1999-19; 2000-15; 2002-13-28; 2003-19; 2004-43; 2005-45; 2006-64; 2007-44; 2009-34; 2010-6; 2012-13
EMPR FIELDWORK 1980, pp. 124-129; 1981, pp. 122-129, 135-141; 1982, pp. 125-127; 1983, pp. 137-138, 142-148; 1984, pp. 139-145, 291-293; 1985, pp. 167-169, 299; 1987, pp. 111, 114-115; 1989, pp. 409-415; 1991, pp. 207-216
EMPR GEM 1971-63-71; 1973-456-463
EMPR GEOLOGY 1977-1981, pp. 156-161
EMPR MAP 61 (1985)
EMPR MER 2003-17
EMPR OF 2004-4
GSC BULL 270
GSC OF 306; 483
GSC P 80-1A, pp. 27-32
Rebagliati, C.M., Titley, E. (2020-05-14): Technical Report Summarizing Exploration Work on the JOY Project, Toodoggone Region, British Columbia, Canada
Rebagliati, C.M., Titley, E. (2020-05-14): Technical Report Summarizing Exploration Work on the JOY Project, Toodoggone Region, British Columbia, Canada (Revision 1)

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