Geologic map of the Triangle A pegmatite, Custer County, South Dakota

January 1, 1955

The Triangle A pegmatite is 4 miles southeast of Custer in the SW 1/4, sec. 34, T. 3 S., R. 5 E., Custer County, S. Dak. It may be reached from Custer by a gravel road 2.4 miles long that leaves U.S. Highway 16A at a point 3.2 miles east of Custer.

Publication Year	1955
Title	Geologic map of the Triangle A pegmatite, Custer County, South Dakota
DOI	10.3133/mf44
Authors	A.J. Lang
Publication Type	Report
Publication Subtype	USGS Numbered Series
Series Title	Miscellaneous Field Studies Map
Series Number	44
Index ID	mf44
Record Source	USGS Publications Warehouse

Geologic map of the Triangle A pegmatite, Custer County, South Dakota

U.S. Geological Survey

U.S. Department of the Interior

Geologic map of the Triangle A pegmatite, Custer County, South Dakota

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