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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  17-Jul-1991 by Garry J. Payie (GJP)

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NMI 092J9 Fsp1,Tlc1
Name LUCKY JANE, LAKE SHORE Mining Division Lillooet
BCGS Map 092J068
Status Past Producer NTS Map 092J09W
Latitude 050º 36' 50'' UTM 10 (NAD 83)
Longitude 122º 25' 55'' Northing 5607043
Easting 540190
Commodities Talc, Fluorite Deposit Types M07 : Ultramafic-hosted talc-magnesite
Tectonic Belt Coast Crystalline Terrane Bridge River
Capsule Geology

The Lucky Jane deposit is located on the west side of Anderson Lake on the Pacific Eastern Railway about 800 metres south of McGillivray Creek. All the workings, including several short (longest 30 metres) tunnels, are close to the railway tracks. The deposit was worked from 1917 to 1935 and produced approximately 455 tonnes of talc. The earlier operator was the Pacific Roofing Company, who shipped crude talc to Vancouver. In later years British Columbia Quarries Ltd. also made intermittent shipments.

A 5-kilometre wide belt of sheared metasediments, consisting of chlorite slates, grey quartzite, schist and altered greenstones of the Mississippian to Jurassic Bridge River Complex (Group) are wedged between granodiorite of the Jurassic to Tertiary Coast Plutonic Complex on the north, and Tertiary granite on the south. Granodiorite dykes have apparently intruded the metasediment/volcanic package prior to the shearing event which produced the talc and are believed to be related to the Coast Plutonic Complex.

The talc occurs in bands up to 3 metres wide, or as narrow veins which pinch and swell, following erratic paths within shears in the metasediments and greenstone. The most important band, the northerly band, strikes 010 degrees and dips 80 degrees west. The talc is light greenish-grey to dark green, highly sheared, soft, fissile and intensely slickensided. Impurities such as pyrite, magnetite, limonite and actinolite occur. Two talc samples yielded the following percentages (Spence, 1940):


Silica 57.62 58.06

Ferrous Oxide 5.31 4.91

Ferric Oxide 0.80 0.11

Alumina 2.46 2.25

Lime 0.10 trace

Magnesia 28.53 28.82

Carbon dioxide nil 0.90

Water > 105 C 4.75 5.46

Total 99.57 99.70


The granite intrusion to the south of the talc deposit is highly miarolitic and contains fluorite and apatite as accessory minerals.

EMPR AR 1916-269,273
EMPR ASS RPT 11749, 19604
EMPR FIELDWORK 1987, pp. 93-130; 1988, pp. 105-152; 1989, pp. 45-72
EMPR OF 1988-3; 1989-4; 1990-10; 1992-16
GSC EC GEOL *2, p. 37
GSC OF 482
GSC P 77-2 (Sample GSC 76-49)
GSC SUM RPT 1917, Pt. B, p. 22
CANMET RPT *803, p. 55
EMPR PFD 11573