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Annie Creek, Bald Mountain District, Lawrence Co., South Dakota, USA

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Latitude & Longitude (WGS84): 44° 21' 9'' North , 103° 55' 42'' West
Latitude & Longitude (decimal): 44.35265,-103.92848
Köppen climate type:Dfb : Warm-summer humid continental climate

Tinguaite west of Lead. Mouth of creek.

Mineral List

Mineral list contains entries from the region specified including sub-localities

6 valid minerals. 1 erroneous literature entry.

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

Holocene - Pleistocene
0 - 2.588 Ma

ID: 2471212
Alluvial deposits

Age: Pleistocene (0 - 2.588 Ma)

Description: Stream-laid deposits of mud, silt, sand, and gravel. Narrow deposits not shown. Maximum thickness 10 m.

Reference: Redden, J.A., E. DeWitt. Maps Showing Geology, Structure, and Geophysics of the Central Black Hills, South Dakota. U.S. Geological Survey Scientific Investigations Map 2777. [73]

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]

Late Ordovician - Middle Cambrian
443.8 - 511 Ma

ID: 2882414
Whitewood Limestone, Winnipeg Formation, and Deadwood Formation

Age: Paleozoic (443.8 - 511 Ma)

Stratigraphic Name: Whitewood Limestone; Winnipeg Formation; Deadwood Formation

Description: Whitewood Limestone (Ordovician)- Mottled, tan, gray to lavender, fine- to medium-crystalline, sparsely fossiliferous limestone and dolomite. Thickness up to 70 ft (21 m). Winnipeg Formation (Ordovician)- Grat and light-green, fissile shale, and tan, calcareous siltstone, sandy shale, and limestone lenses. Thickness up to 110 ft (34 m). Deadwood Formation (Ordovician to Cambrian)- Variegated, yellow to red, brown, gray, and green, glauconitic, conglomerate, sandstone, shale, dolomitic limestone, and dolomite. Thickness 4-400 ft (1-122 m).

Lithology: Major:{conglomerate,sandstone,shale}, Minor:{limestone,dolostone,siltstone}

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

Localities in this Region


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Irving, J. D. (1899). A contribution to the geology of the northern Black Hills. Annals of the New York Academy of Sciences, 12(1), 187-340.
Sillitoe, R. H. (2002). Some metallogenic features of gold and copper deposits related to alkaline rocks and consequences for exploration. Mineralium Deposita, 37(1), 4-13.

Mineral and/or Locality  
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