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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  31-Mar-92 by Dave Nelles(DMN)

Summary HelpHelp

NMI
Name HOME X Mining Division New Westminster
BCGS Map 092H054
Status Showing NTS Map 092H11W
Latitude 49º 32' 15" N UTM 10 (NAD 83)
Longitude 121º 18' 25" W Northing 5488587
Easting 622494
Commodities Gold, Arsenic Deposit Types I01 : Au-quartz veins
Tectonic Belt Coast Crystalline Terrane Methow
Capsule Geology

The Home X occurrence is situated east of Spider Peak near the headwaters of Siwash Creek, approximately 500 metres northwest of the Pipestem mine (092HNW011). The area is underlain by grey to black, locally organic-rich, pyritic, slaty argillite intercallated with well-bedded siltstone, all assigned to the Early and Middle Jurassic Ladner Group. A number of northwest striking bands of medium to very coarse-grained, tuffaceous, fossiliferous wacke also occur within the sequence. The bands vary from 5 to 45 metres thick and are the principal host to gold mineralization at the Pipestem mine.

To the south, these sedimentary rocks have been intruded by narrow sills and dykes up to 4 metres thick. Several porphyritic felsic sills, similar to those associated with gold occurrences in the Siwash Creek area (092HNW004, 005, 015-017), host thin quartz veins with pyrite.

Approximately 600 metres northwest of the Pipestem mine, the collapsed portals of one, or possibly two adits and a small dump are the only evidence of previous development in the area. Here, black, poorly to moderately bedded slaty argillite is cut by irregular quartz veins up to 10 centimetres wide. The veins contain sparse pyrite and trace amounts of arsenopyrite concentrated in fractures that both cross the veins and parallel the vein/sediment contact. The dump also contains large fragments of quartz-veined argillite.

A rock sample taken in 1982 near the the Home X adit assayed 1.9 grams per tonne gold and 0.118 per cent arsenic (Assessment Report 11158, Figure 9).

Bibliography
EMPR AR 1933-A176
EMPR ASS RPT 5907, 6813, 8371, *11158, 13221
EMPR BULL 20, Pt. IV, pp. 20-23; *79, p. 66
EMPR EXPL 1976-E86; 1977-E133, 1980-205; 1982-188; 1984-195
GSC MAP 737A; 1988; 12-1969; 41-1989
GSC MEM 139
GSC P 69-47
GSC SUM RPT 1919, Pt. B; 1920, Pt. A, pp. 23A-41A; 1929, Pt. A,  pp. 144A-197A

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