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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  30-Jul-1987 by Larry Jones (LDJ)

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NMI 082M9 Cu1
Name MONTGOMERY, MONT Mining Division Revelstoke
BCGS Map 082M059
Status Prospect NTS Map 082M09W
Latitude 051º 32' 25'' UTM 11 (NAD 83)
Longitude 118º 19' 28'' Northing 5710740
Easting 408150
Commodities Copper, Zinc, Silver, Gold Deposit Types G04 : Besshi massive sulphide Cu-Zn
Tectonic Belt Omineca Terrane Kootenay
Capsule Geology

The Montgomery showings are a series of lenses of massive sulfides and disseminated sulfides in micaceous chloritic schist and sericitic quartzite of the metavolcanic-phyllite division of the Lower Paleozoic Upper Index Formation. Thin limestone and impure dolomite layers, calc-silicate gneiss, calcareous phyllite and massive to schistose greenstone layers are common in the immedi- ate vicinity of the showings. This succession, believed to be right way up, is immediately underlain by calc-silicate gneiss, calcareous schist, amphibolite and locally skarn adjacent to the Goldstream pluton, and a thick succession of quartzite and pelitic schist of the quartzite-schist division. To the northeast it is overlain by more calcareous rocks and a thick marble of the carbonate-phyllite division (Economic Geology, Vol. 79, No. 5).

Mineralization consists of disseminated pyrrhotite occurrences over a distance of 1200 metres and massive sulphide beds composed largely of pyrrhotite and lesser chalcopyrite and pyrite. The strata- bound massive sulphide mineralization, from 1 to 3.5 metres thick has been traced intermittently along strike for about 770 metres and through a vertical distance of 375 metres. The horizon strikes approximately west northwesterly and dips from 40 to 45 degrees north.

The Montgomery deposits are hosted by the same lithologic unit as the Goldstream deposit which is considered to be 'Besshi-type'.

A 2.0 metre channel sample assayed 1.76 per cent copper, 0.24 per cent zinc, 3.2 grams per tonne silver, and 0.014 grams per tonne gold (Assessment Report 10180).

EMPR AR 1916-192-193; 1917-152; 1921-154-155; 1929-330
EMPR ASS RPT *10180, 15484
EMPR BULL 71, pp. 28,29,32,33,Fig. 2
EMPR EXPL 1976-68 (Mont)
EMPR OF 1999-2
EMPR PF (*Morton, R.D. (1976): Preliminary Report on the Geology & Economic Potentials of the Bend & Mont Claims; in VSE Statement of Material Facts, Seaforth Mines Ltd., April 21, 1976)
GSC MAP 12-1964
GSC OF 637
GSC P 64-32, p. 32
GSC SUM RPT 1929, Part A, pp. 155,157,160-163
GCNL Feb 18, Apr 2, May 12, Aug 3, 1976
Hoy, T., Gibson, G., and Berg, N.W. 1984 (EG V. 79, No. 5, pp. 789, 791-793,800)