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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  23-Sep-2021 by Garry J. Payie (GJP)

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NMI 104M9 Au4
Name GRAHAM CREEK Mining Division Atlin
BCGS Map 104M070
Status Showing NTS Map 104M09E
Latitude 059º 39' 29'' UTM 08 (NAD 83)
Longitude 134º 02' 11'' Northing 6613725
Easting 554300
Commodities Gold Deposit Types C01 : Surficial placers
Tectonic Belt Intermontane Terrane Cache Creek
Capsule Geology

A large number of placer claims were staked on Graham Creek, 12.8 kilometres east of Taku Arm, in 1900.

This placer gold occurrence is the westernmost known placer of the Atlin Camp, probably derived from a nearby lode source (Personal Communication: Ballantyne, B., Geological Survey of Canada, Ottawa, 1988).

Graham Creek flows south into Graham Inlet, some 13 kilometres east of Taku Arm. A large number of claims were staked on the creek in August 1900. The Discovery claim was the only one which produced adequate returns and work was continued on this claim into 1902. The other claims were soon abandoned and subsequently lapsed. In 1903 a small syndicate acquired a number of leases on the creek but were unable to finance the initial cost of a larger scale operation. Further prospecting was done on the creek during the period 1905-1921.

In 2016, Running Dog Resource Ltd and Attunga Holdings Inc. carried out limited mapping and geochemical sampling over the central portion of the Graham property, collecting 5 rock -, 7 silt -, 4 pan concentrate -, and 39 soil samples (Assessment Report 36288). The program was designed to investigate whether the altered Hornblende Feldspar Porphyry of the Windy-Table intrusive suite mapped by Mihalynuk (1999, p.131) was the source of the placer gold in Graham Creek and whether it contains significant base and precious metal mineralization. Results of the 2016 geochemical sampling from the Graham property were subtle, with the exception of a silt sample from Graham Creek which contained 1060 parts per billion gold (Assessment Report 36288). The five float and grab samples collected in 2016 were altered and pyritized but contained low base and precious metal contents. Regional mapping by Mihalynuk (1999) showed a 5 by 1 kilometre pluton of altered feldspar porphyry along Graham Creek, which he assigned to the 70-85 Ma Windy-Table intrusive suite. Mapping in 2016 indicated that the Windy-Table feldspar porphyry actually forms a greater than 200-metre-wide dike which strikes north along Graham Creek for more than 1300 metres.

Bibliography
EMPR AR 1901-984; 1902-37, 40; 1903-44; 1904-57
EMPR ASS RPT 15476, *16288
EMPR BULL *28, pp. 17, 18; 105
EMPR FIELDWORK 1989, pp. 181-196; 1990, pp. 139-144, 153-159
EMPR OF 1990-4
EMPR PF (In 104M General File - Claim map of 104M, 1970; Claim map of 104M 08 and 09, 1970)
EMPR RGS 37, 1993
GSC MAP *19-1957; 94A; 711; 1418A; 1426
GSC MEM 37
GSC OF 427; 2225, p. 42
GSC P 69-01A, pp. 23-27; 78-01A, pp. 69-70; 91-01A, pp. 147-153; 92-01A
GSC SUM RPT 1906, pp. 26-32; 1911, pp. 27-58

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