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West Fork G Taylor-Fry Occurrence (West Fork; Fry Dillon; Fry-Taylor; Taylor-Fry-Tuttle), Stillwater Complex, Sweet Grass Co., Montana, USA

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Latitude & Longitude (WGS84): 45° 22' 57'' North , 110° 0' 16'' West
Latitude & Longitude (decimal): 45.38250,-110.00444
Köppen climate type:Dfc : Subarctic climate


REF:Deposit:: WIMMLER, N.L., 1948, INVESTIGATION OF CHROMITE DEPOSITS OF THE STILLWATER COMPLEX, STILLWATER AND SWEETGRASS COUNTIES, MONT.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4368, P.
Deposit:: HOWLAND, A.L., 1955, CHROMITE DEPOSITS IN THE CENTR
Commodities (Major) - Chromium; (Minor) - PGE - Rhodium, PGE - Palladium, PGE - Platinum
Development Status: Occurrence
Deposit Model: 2: Bushveld Cr
Host Rock Unit: Stillwater Complex, Ultramafic Series
Structure: The Stillwater Complex Is Exposed Along The Northern Margin Of The Beartooth Uplift, One Of Several Laramide Basement-Cored Ranges That Make Up The Rocky Mountain Foreland Of South-Central Montana (Foose And Others, 1961: Kulik And Schmidt, 1988)
Host Rock: Harzburgite
Tectonic Structure: Tectonic Setting At Time Of Emplacement Of The Stillwater Complex Is Unknown. The Complex Was E


Commodity List

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


Mineral List


1 valid mineral.

Rock Types Recorded

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Alphabetical List Tree Diagram

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

Archean
2500 - 4000 Ma



ID: 2930264
Stillwater complex

Age: Archean (2500 - 4000 Ma)

Stratigraphic Name: Stillwater Complex

Description: Layered ultramafic and mafic rocks from peridotite and pyroxenite at the base (ultramafic series) to gabbro and anorthosite in the upper part (banded series). Maximum exposed thickness in the Beartooth Mountains is about 6,700 m (22,000 ft).

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]

Archean
2500 - 4000 Ma



ID: 2111989
Wyoming Province, Stillwater Complex, Peridotite zone of the Ultramafic series and Basal series, undivided

Age: Archean (2500 - 4000 Ma)

Lithology: Major:: {peridotite}

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]

Archean
2500 - 4000 Ma



ID: 3190410
Archean crystalline metamorphic rocks

Age: Archean (2500 - 4000 Ma)

Lithology: Orthogneiss/paragneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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



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