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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  31-Mar-1993 by Discovery Consultants (DISC)

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NMI
Name SIWASH CREEK, NASWHITO CREEK Mining Division Vernon
BCGS Map 082L023
Status Past Producer NTS Map 082L06W
Latitude 050º 17' 29'' UTM 11 (NAD 83)
Longitude 119º 27' 16'' Northing 5573911
Easting 325172
Commodities Gold Deposit Types C01 : Surficial placers
Tectonic Belt Intermontane Terrane Overlap Assemblage, Harper Ranch
Capsule Geology

The Naswhito Creek showing is located 13 kilometres west- northwest of Vernon, on Naswhito Creek.

In this area, Devonian to Triassic sedimentary and volcanic rocks of the Harper Ranch Group are unconformably overlain by Upper Triassic to Lower Jurassic Nicola Group sedimentary and volcanic rocks. These units are intruded by Middle Jurassic granitic rocks of the informally named Terrace Creek batholith. Eocene Penticton Group or Kamloops Group volcanic rocks overlie the igneous and sedimentary rocks.

Quaternary gravels host placer gold mineralization. At the base of a 60-metre thick sequence of gravels, sand and clay, 1 metre or so of rusty-weathering gravel hosts the best values, with the highest concentration occurring on bedrock. The fineness of the gold is reported to average about 840. The gravels extend to the north past Equesis Creek and cover an area of about 6 square kilometres.

Placer gold exploration and mining (through tunnels) was first reported in 1889. From 1889-95 approximately 15 kilograms of placer gold production was reported (Bulletin 28). From 1915-18, hydraulic mining reportedly produced 19 kilograms of placer gold (Bulletin 28). Minor reported production during 1924-35 was about 1 kilogram.

Bibliography
EMPR AR 1889-292; 1890-379; 1891-576; 1892-543; 1893-1073; 1894-753; 1895-706; *1915-21,252,253; 1916-20,263; 1917-20; 1918-21; *1924-140; 1926-200; 1930-208; 1931-116; 1934-D34; 1935-D15
EMPR BULL 1933 No. 1, p. 41; *28, pp. 62-63
EMPR FIELDWORK 1987, pp. 55-58; 1988, pp. 355-363
EMPR MAP 7216G, 8513G
EMPR OF 1989-5, 1990-30
EMPR PF (In 082LSW General - Claim Map, 1966)
EMPR RGS 1976
GSC MEM 296, pp. 136-137
GSC OF 637 (Map C), 736, 2167
GSC P 89-1E pp. 51-60
GSC SUM RPT *1931A, pp. 73-74, 113

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