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Bald Knob deposit (Primary ore body; Crouse Knob deposit), Bald Knob, Sparta, Alleghany Co., North Carolina, USA

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Latitude & Longitude (WGS84): 36° 33' 0'' North , 81° 5' 45'' West
Latitude & Longitude (decimal): 36.55000,-81.09583
Köppen climate type:Cfb : Temperate oceanic climate

A manganese mine located 2½ miles East of Sparta.

Mineral List

42 valid minerals. 3 (TL) - type locality of 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

541 - 1000 Ma

ID: 2844561
Ashe Metamorphic Suite and Tallulah Falls Formation; Muscovite-biotite gneiss

Age: Neoproterozoic (541 - 1000 Ma)

Stratigraphic Name: Ashe Metamorphic Suite; Tallulah Falls Formation

Description: Locally sulfidic; interlayered and gradational with mica schist, minor amphibolite, and hornblende gneiss.

Lithology: Major:{gneiss,mica schist}, Minor:{amphibolite}

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, 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.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ross, Clarence S. and Paul F. Kerr (1932), The Manganese Minerals of a vein near Bald Knob, North Carolina, The American Mineralogist: 17(1)(January): 18.
Rocks & Minerals (1946): 21: 357.
Brannock, K. C (1971), Minerals of the Spinel Group from Alleghany County, North Carolina.
Peacor, D. et al. (1974).
Simmons, W. B., et al. (1981), Manganese Minerals of Bald Knob, North Carolina. Mineralogical Record: 12: 167-171.
Winter, A. Gary, Essene, J. Eric and Pecor, R. Donald (1981), Carbonates and pyroxenoids from the manganese deposit near Bald knob, North Carolina: American Mineralogist: 66: 279-280.
Rocks & Minerals (1985): 60: 130-135.
Economic Geology (1992): 87: 2023-2040.
Bernard, Jan H. and Jaroslav Hyrsl (2004), Minerals and Their Localities: 694.

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