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Mullan Mine, Chewelah, Chewelah District, Stevens Co., Washington, USA

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Latitude & Longitude (WGS84): 48° 16' 37'' North , 117° 38' 52'' West
Latitude & Longitude (decimal): 48.27722,-117.64800
Köppen climate type:Dsb : Warm, dry-summer continental climate


References:
*Cannon, B. (1975): Minerals of Washington, p.61
*http://tin.er.usgs.gov/mrds/show.php?labno=10042350


Mineral List


11 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: 2987252
Glacial drift, undivided

Age: Pleistocene (0.0117 - 2.588 Ma)

Stratigraphic Name: Nespelem Silt; Salmon Springs Drift: Wingate Hills Drift; Hayden Creek Drift; Vashon Drift; Sumas Drift

Description: Glacial and glaciofluvial sand, gravel, and till; includes alpine glacier outwash and till as well as some Recent alluvium.

Comments: Nespelem silt (in part); Salmon Springs Stade: Wingate Hills Drift, Hayden Creek Drift; Vashon Drift (in part); Sumas Drift; Primarily located in northeast Washington with some deposits along the Skagit River and near Eatonville. The Hayden Creek and Wingate Hill Drifts are alpine glacial deposits. The drift in northeast Washington was deposited by the Cordilleran Ice Sheet in Late and pre-Late Wisconsin (Stoffel and others, 1991). Most deposits are gravel to fine-grained sand. Finer-grained material (silt and clay) is incidental.

Lithology: Major:{sand,gravel}, Incidental:{unconsolidated}

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]

Mesoproterozoic
1000 - 1600 Ma



ID: 1393512
Ravalli Group, Revett Fm., Belt Supergroup

Age: Mesoproterozoic (1000 - 1600 Ma)

Lithology: Metasedimentary rocks

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]

Mesoproterozoic
1000 - 1600 Ma



ID: 2136421
Revett Formation

Age: Mesoproterozoic (1000 - 1600 Ma)

Lithology: Major:: {quartzite}; Minor:: {siltite}

Reference: Zientek, M.L., P.D. Derkey, R.J. Miller, J.D. Causet et al. Spatial Databases for the Geology of the Northern Rocky Mountains - Idaho, Montana, and Washington. U.S. Geological Survey Open-File Report 2005-1235 Version 1.0. [25]

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



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