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File Created: 23-Dec-91 by Chris J. Rees(CRE)
Last Edit:  13-Jul-99 by Janet M. Riddell(JMR)

Summary Help Help

NMI
Name LANCERS MOUNTAIN, HOODOO, HANNAH 1-2, KLN, KLN 2-3, BHA, FRANKLIN GLACIER Mining Division Vancouver
BCGS Map 092N033
Status Prospect NTS Map 092N06W, 092N05E
Latitude 51º 19' 55" N UTM 10 (NAD 83)
Longitude 125º 30' 02" W Northing 5689708
Easting 325804
Commodities Gold, Silver, Copper, Zinc, Lead Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks, Undivided Metamorphic Assembl.
Capsule Geology

The Lancers Mountain occurrence, located between Hoodoo Creek and Confederation Glacier, is characterized by silver, gold, lead, zinc and copper mineralization associated with a variety of felsic to intermediate intrusions of the Jurassic to Tertiary Coast Plutonic Complex.

The area is underlain by gneisses and a younger, probably Tertiary intrusive-extrusive complex, all belonging to the Coast Plutonic Complex (Geological Survey of Canada Open File 1163). The oldest unit consists of foliated quartz diorite and hornblende- biotite gneiss. These rocks are intruded by a monzonite(?) to quartz monzonite porphyry, mainly in the west and northwest, dykes of which intrude the quartz diorite to the east.

Apparently related to the monzonitic porphyry is a heterolithic intrusive breccia; it is emplaced along a northeast-trending fault zone. The quartz monzonite, the breccia and the dykes are probably the subvolcanic equivalents of locally occurring agglomerate, tuff and volcanic flows. Numerous other dykes present are generally porphyritic and pyritic, and include fine-grained monzonitic dykes, felsite dykes, and bleached quartz-eye rhyodacite dykes. They typically strike northwest, less commonly north. Weak epidote and chlorite (propylitic) alteration is present, especially at dyke margins.

The youngest event, and the most economically significant, appears to be partly fracture-controlled quartz-pyrite, quartz-carbonate (calcite and/or ankerite), and pyrite veining, including stockworks. This is generally associated with silicification and pyritic and argillic hydrothermal alteration. The veins are typically 5 centimetres wide, and trend north to northwest, with steep to vertical dips. Some are larger (40 to 50 centimetres wide), and vuggy.

Oxidation has produced at least four major gossanous zones containing limonite and pyrolusite, hosted in various rock types but concentrated at lithological contacts; an average size would be 50 by 50 metres. Within the gossanous zones are areas of mineralized quartz-pyrite and pyrite veins and stockworks, locally containing minor amounts of disseminated chalcopyrite and, more rarely, sphalerite, galena and malachite. Copper and zinc values obtained from grab samples ranged up to 1.0 per cent for each (Assessment Report 9710). One zone (East No.2) contains two quartz stockwork zones up to 1 metre wide carrying significant silver mineralization, including pyrargyrite, galena, sphalerite, chalcopyrite and pyrite (Assessment Report 9508). One grab sample from here assayed 1521 grams per tonne silver and 1.1 grams per tonne gold (Assessment Report 9508).

On the northeast flank of Lancers Mountain, a select grab sample from a trench cut in a silicified felsic dyke assayed 35,513 grams per tonne silver, 56.6 grams per tonne gold, 1.2 per cent zinc and 0.39 per cent lead (Assessment Report 18202).

Despite some very high, though sporadic geochemical results, most exploration efforts in the area failed to define significant widths of economic mineralization, although the potential at depth was not discounted.

Part of the property was staked as the KLN in 1996 by J.R. Deighton and F. Onucki, and prospected by Paul McDonald and Douglas Baker.

Bibliography
EMPR ASS RPT *9508, 9710, *18202, 25067
EMPR EXPL 1980-278; 1981-97; 2002-29-40
GSC OF 1163
PR REL Saxony Explorations Ltd., Dec.18, 2002

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