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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  19-Dec-2024 by Del Ferguson (DF)

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NMI 092J15 Au6
Name WHY NOT (L.649), BRIDGE RIVER CONSOLIDATED, ELEPHANT (L.444) Mining Division Lillooet
BCGS Map 092J086
Status Developed Prospect NTS Map 092J15W
Latitude 050º 49' 25'' UTM 10 (NAD 83)
Longitude 122º 49' 40'' Northing 5630224
Easting 512131
Commodities Gold Deposit Types I01 : Au-quartz veins
Tectonic Belt Coast Crystalline Terrane Bridge River, Cadwallader
Capsule Geology

The WHY NOT prospect is located east of the Hurley River and west of the Bralorne-Gold Bridge road, approximately 3.2 kilometres south of Gold Bridge, B.C.

The Why Not shear trends northwest and dips northeast in altered quartzose diorite of the Permian Bralorne Igneous Complex before fraying out in sheared altered serpentinite of the President Ultramafics (correlative with the Permian and older Shulaps Ultramafic Complex). The en echelon veins are composed of white, massive to crystalline and sometimes drusy quartz, a few centimetres to a few metres wide. Rock inclusions occur between split veins. The quartz veins are well defined and poorly mineralized with only local gold values. The Why Not workings coalesce with the California workings to the southeast (see 092JNE020). Where the two veins intersect, high gold values are reported.

The WHY NOT and CALIFORNIA prospects are in the BRX BLOCK, in the northern extension of the Bralorne Gold deposit trend. The local geology is a general extension of the lithological units at Bralorne. Gold-bearing quartz veins are hosted in Triassic greenstones, diorites and granites bounded by two major fault zones. These veins strike northwest and dip to the northeast, whereas gold-bearing veins at Bralorne-Pioneer strike west-northwest and dip to the north. Historically 10 veins have been defined in the BRX Block.

In 2018, Bralorne Gold Mines (Talisker Resources) ran aggressive programs to evaluate the potential of underexplored portions of the property, including digitization of known information, data mining and integration into 3D visualization software (Assessment Report 38967).

In 2021, Talisker Resources drilled 31 diamond drill holes totaling 16,814.5 metres and 3 reverse circulation holes totaling 1,343 metres in the BRX, Bralorne West and Bralorne East blocks, as well as an airborne magnetic, VLF-EM and radiometric surveys. All 4 holes drilled in the BRX Block intersected mineralization, with low to moderate grade intercepts across broad zones hosted in basalt, diorite and mafic and felsic dikes. The best intercept was in diamond drill hole SB-2021-068 (approximately 300 metres northeast of Why Not), yielding a composite value of 90.71 grams per tonne gold over 2.25 metres (Assessment Report 40143).

*See BRALORNE (Minfile 092JNE001) for more on exploration, geology and mineral resource estimates for the Bralorne Gold deposit belt.

Bibliography
EMPR AR 1900-908; 1902-H306; 1913-K262; 1931-112; 1932-219; 1933-267; 1944-55; 1945-86; *1946-106; 1959-28; 1960-23; 1961-27
EMPR ASS RPT 12305, 14664, *14665, 18477, 38967, 40143
EMPR BULL 1, p. 77; 3, p. 35; 100
EMPR EXPL 1977-E169; 1978-E178; 1979-185; 1980-260
EMPR FIELDWORK 1974, p. 35; 1985, pp. 303-310; 1986, pp. 23-29; 1987, pp. 93-130; 1988, pp. 105-152; 1989, pp. 45-72; 1990, pp. 75-83
EMPR GEOFILE 1999-1
EMPR Inspections Branch Files #202554, 60164 to 60166
EMPR OF 1987-11; 1988-3; 1989-4; 1990-10
EMPR P 1995-3
EMPR PF (Report by S. Kelly, 1977)
GSC MAP 430A
GSC MEM 130; 213, pp. 89, 91
GSC OF 482
GSC P 43-15; 73-17
GSC SUM RPT 1931(A); 1915, p. 82
CJES 1987, Vol. 24, pp. 2279-2291
GEOSCIENCE BC RPT 2008-1, 2017-08
GCNL #27, 1986
Talisker Resources Ltd. (2020-09-02): NI 43-101 Technical Report, Bralorne Gold Project, Bralorne, British Columbia, Canada

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