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Little Elk Creek, Nemo, Lawrence Co., South Dakota, USA

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Latitude & Longitude (WGS84): 44° 14' 47'' North , 103° 31' 9'' West
Latitude & Longitude (decimal): 44.24656,-103.51927
Köppen climate type:Dfb : Warm-summer humid continental climate

4 miles north of Nemo. Near Meade county line. Little Elk gneissoid granite.

Mineral List

7 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

2500 - 2800 Ma

ID: 2759885

Age: Neoarchean (2500 - 2800 Ma)

Description: Pink and gray, strongly foliated, medium- to coarse-crystalline, locally pegmatitic, biotite-muscovite granite and gneissic granite.

Lithology: Major:{granite}

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]

2500 - 2800 Ma

ID: 2476165

Age: Neoarchean (2500 - 2800 Ma)

Description: Includes the Little Elk Granite (T. 3 N., R. 5 E.) and pegmatitic granite and trondhjemite at Bear Mountain ( T. 2 S., R. 3 E.). Little Elk Granite is a coarse-grained, pinkish microcline augen granite that locally contains blue quartz. The I-type biotite granite is metaluminous to slightly peraluminous and has U-Pb zircon age of 2,549 ± 11 Ma (Gosselin and others, 1988). The medium-grained granite and trondhjemite at Bear Mountain are typically leucocratic, muscovite-bearing, and peraluminous. Pegmatitic phases are clearly deformed. U-Pb zircon upper intercept age of 2,392 ± 230 Ma (Gosselin and others, 1988) is considered a minimum age for the granite.

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]

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

This page contains all mineral locality references listed on 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 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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