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Bear Gulch Pegmatite Prospect (Elizabeth No. 8 Claim), Tinton pegmatite District, Lawrence Co., South Dakota, USA

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Latitude & Longitude (WGS84): 44° 23' 52'' North , 104° 2' 22'' West
Latitude & Longitude (decimal): 44.39778,-104.03944
GeoHash:G#: 9xyh8d2gc
Locality type:Prospect
Köppen climate type:Dfb : Warm-summer humid continental climate


REF:Deposit:: GARDNER, E D, 1939, TIN DEPOSITS OF THE BLACK HILLS, SOUTH D
Deposit:: USBM IC 7069, P 68.
Commodities (Trace) - Tin
Development Status: Prospect


Mineral List

 No mineral species recorded.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

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

Eocene - Paleocene
33.9 - 66 Ma



ID: 2815449
Trachytic Intrusive Rocks

Age: Paleogene (33.9 - 66 Ma)

Description: Tan to reddish-brown, iron-stained stocks, laccoliths, sills, and dikes of trachyte, quartz trachyte, and alkalic rhyolite. Contains phenocrysts of sanidine, orrthoclase, anorthoclase, aegirine-augite and biotite in a finely crystalline orthoclase-quartz biotite groundmass.

Lithology: Major:{hypabyssal trachyte,hypabyssal quartz trachyte,hypabyssal rhyolite}

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]

Eocene - Paleocene
33.9 - 66 Ma



ID: 3267869
Trachytic intrusive rocks

Age: Paleogene (33.9 - 66 Ma)

Description: Small stocks, laccoliths, sills, and dikes of iron­-staincd, reddish-brown to tan trachyte (Staatz, 1983)

Reference: Sutherland, W.M. Geologic Map Of The Sundance 30' X 60' Quadrangle, Crook And Weston Counties, Wyoming, And Lawrence And Pennington Counties, South Dakota. Wyoming State Geological Survey Map Series 78. [171]

Permian - Devonian
252.17 - 419.2 Ma



ID: 3190647
Paleozoic sedimentary rocks

Age: Paleozoic (252.17 - 419.2 Ma)

Lithology: Sedimentary rocks

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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