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Little Chief Mine (Double Header Mine; Grand Coulee Mine; Ruby Silver Mine), Mineral Hill, Nespelem District (Moses District), Colville Indian Reservation, Okanogan Co., Washington, USA

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Latitude & Longitude (WGS84): 48° 8' 55'' North , 119° 0' 31'' West
Latitude & Longitude (decimal): 48.14861,-119.00861
Köppen climate type:Dsb : Warm, dry-summer continental climate


Northwest 1/4 section 35, T31N-R30E

A Ag,Au,Cu mine

This mine is located on the Southeast slope of the southeastern spur of Mineral Hill, on the opposite side of the spur from the Apache Mine, 3/4 of a mile away.

It worked ore shoots along a fracture zone in granite 2'-10' wide, largely replaced by quartz

Developments include 3,000' of workings on 3 levels including a shaft, 7 stopes, and 3 adits

It produced 33 tons of ore in 1911-1912, and small amounts from 1937-1954

Ore from this mine was shipped to the Tacoma Smelter (http://www.mindat.org/loc.php?loc=52739)

NOTE: Pardee (1918) list an "oxide of antimony" from one of the levels but does not specify further

Ref:
Pardee, J. (1918): United States Geological Survey, Bulletin 677, Geology and Mineral Deposits of the Colville Indian Reservation, Washington
Huntting, M. (1956): Inventory of Washington Minerals, Part II, Metallic Minerals, Vol. 1, p.306
Cannon, B. (1975): Minerals of Washington' p.35, 139, 161
Lasmanis, R. Et Al (1990): Metal Mines of Washington-Preliminary Report, p.225


Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


9 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Pleistocene
0.0117 - 2.588 Ma



ID: 1417465
continental glacial drift, Fraser-age; mostly Vashon Stade in western WA; unnamed in eastern WA

Age: Pleistocene (0.0117 - 2.588 Ma)

Lithology: Sand,gravel

Reference: Washington State Department of Natural Resources, Division of Geology and Earth Resources. Washington Interactive Geologic Map: 1:100,000 scale. Washington Division of Geology and Earth Resources. [19]

Eocene - Precambrian
33.9 - 4000 Ma



ID: 2906363
Mesozoic granitic rocks, undivided

Age: Eoarchean to Paleogene (33.9 - 4000 Ma)

Stratigraphic Name: Loon Lake Granite; Mount Stuart Granodiorite; Osoyoos Granodiorite; Whisky Mountain Granodiorite

Description: Granite, quartz monzonite, quartz diorite, granodiorite, and trondhjemite. Includes diorite in southeastern Washington; diorite and gabbro near Concunully in Okanogan County; gneiss, schist, and migmatites in areas of Chelan, Colville, and Okanogan batholiths. Includes high-grade metamorphic rocks of Precambrian age in Spokane area.

Comments: Colville batholith; Kaniksu Batholith (including Spirit pluton); Loon Lake granite; Mount Stuart granodiorite; Osoyoos granodiorite; Similkameen batholith; Whisky Mountain granodiorite; Cooper Mtn Batholith; Okanogan Batholith; Includes significant portions, primarily orthogneiss, of the Kettle Metamorphic Core Complex and the Okanogan Metamorphic Core Complex, as well as orthogneiss in the Okanogan Batholith area. Metamorphic rocks near Spokane include quartzite and possibly meta-argillite and hornfels of Belt Supergroup (Stoffel and others, 1991). Note that Stoffel and others, 1991, report that while the term "Loon Lake Granite" was once widely used, it has since been abandoned.

Lithology: Major:{granite}, Minor:{granodiorite,quartz monzonite,tonalite,orthogneiss}, Incidental:{diorite, gabbro, schist, migmatite, syenite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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