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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  07-Oct-2021 by George Owsiacki (GO)

Summary Help Help

NMI 104N14 Au2
Name CHEHALIS CREEK, LINCOLN CREEK Mining Division Atlin
BCGS Map 104N085
Status Past Producer NTS Map 104N14E
Latitude 059º 50' 59'' UTM 08 (NAD 83)
Longitude 133º 01' 12'' Northing 6636333
Easting 610929
Commodities Gold Deposit Types C01 : Surficial placers
C02 : Buried-channel placers
Tectonic Belt Intermontane Terrane Cache Creek, Plutonic Rocks
Capsule Geology

Chehalis Creek, previously called Lincoln Creek, flows north into the west end of Gladys Lake, north of Surprise Lake and about 49 kilometres northeast of the community of Atlin. Most of the old workings are half-way up the creek which is about 10 kilometres long.

The creek is located just north of the Late Cretaceous primarily granitic Surprise Lake batholith (Surprise Lake Plutonic Suite). Outcrops in the area east of the creek are composed of greenstones of the upper Mississippian to Permian Nakina Formation (Cache Creek Complex) and upper Mississippian to Permian ultramafic rocks (Cache Creek Complex). The ultramafic bodies are often highly altered and talc rich. West of the creek, there are cherts, argillites and limestones of the Mississippian to Triassic Kedahda Formation which are stratigraphically higher in the Cache Creek Complex. There are no exposures in the creek bed.

The creek was prospected and worked during two main periods, from 1910 to 1919 and from 1984 to 1985. Underground work and percussion drilling were done but only a small amount of gold was removed. It is notable that much of the work was stopped due to financial disagreements and the caving in of shafts and tunnels through the overburden which never reached bedrock. Around 155 grams of gold were recovered from the creek between 1916 and 1920. Bulletin 28 records production from a period of 1916 to 1920, but it most likely is from 1910 to 1915.

In 1995, G.C. Lee and R. Smith completed a magnetometer and VLF-EM survey on Lincoln Creek over 6.2 kilometres of grid.

In 2018-19, Decoors Mining Corp. conducted a sampling program of Mobile Metal Ion (MMI) and Spatiotemporal Geochemical Hydrocarbon (SGH) along the road next to Lincoln Creek, a reconnaissance magnetometer survey, mapping and a combined magnetic susceptibility/conductivity survey. In total, 45 MMI samples, 39 SGH samples, and 17 rock samples were taken along with 9 kilometres of continuous ground magnetometer readings. The program was designed to further verify the potential of the Lincoln property to host gold mineralization similar to Otter Creek (104N 032), a significant placer producer with multiple gold occurrences occurring in the bedrock beneath the placer, approximately 34 kilometres south-southwest of the claims.

Bibliography
EMPR ASS RPT 12388, 14688, 14874, 24441, 38338, 38340, 39153
EMPR AR 1905-78; 1906-55; 1907-52; 1908-49; 1909-52; 1910-54; 1911-59; 1912-59; 1916-45; 1917-79; 1918-100; 1919-90; 1920-73; 1928-122; 1930-127; 1932-72
EMPR BULL 1 (1933), p. 30; 28, p. 18
EMPR MISC PUB (Stratigraphy of the Placers in Atlin, Placer Mining Camp, P.J. and W.M. Proudlock, 1976)
EMPR OF 1996-11
EMPR P 1984-2
EMPR PF (Black, J.M. (1953): Atlin Placer Camp, Unpublished Report, 116 pages)
GSC MEM 307
GSC OF 864
GSC P 74-47
GSC SUM RPT XII (1899) Part A, p. 60

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