Latitude: 43°46'57"N
Longitude: 103°34'9"W
A granite pegmatite formerly operated for muscovite and located 3.2 km (2 miles) northeast of Custer.
Refs.: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 911.
U.S. Bureau of Mines (1955) Black Hills Mineral Atlas, South Dakota: Part 2, Bureau of Mines Information Circular 7707.
Roberts, W.L., and Rapp, George (1965) Mineralogy of the Black Hills, South Dakota School of Mines and Technology.
Mineralogical Record (1973): 4: 111.
Moore, Paul B.; Ito, Jun. (1973): Wyllieite (Na2Fe2+2Al(PO4)3), a new species. Mineralogical Record: 4: 131-136.
Moore, Paul B. and Molin-Case, JoAnn, 1974, Contribution to Pegmatite Phosphate Giant Crystal Paragenesis: II Crystal Chemistry of Wyllieite, NasFe2+aAl[PO4]3, a Primary Phase, American Mineralogist, v. 59, p. 280-290.
Moore, Paul B. and Ito, Jun 1979, [Wyllieite redefined as ferrowyllieite-(MnNaNa)], Min. Mag. v. 43, p. 227 (1979).
Rocks & Minerals (1982): 57: 55.
Rocks & Minerals (2000): 75(3): 156-169.
Mineral List
20 entries listed. 17 valid minerals. 1 type locality (valid mineral). 1 erroneous literature entry.
The above list 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.
Mineral and Locality Search
