Geology and Beryl Deposits of the Peerless Pegmatite, Pennington County, South Dakota
Description:
A report about a peerless pegmatite which has been a large source of scrap mica and beryl. Feldspar, amblygonite, tantalite-columbite, and cassiterite also have been recovered.
Date:
February 1955
Creator:
Sheridan, Douglas M.; Stephen, Hal G.; Staatz, Mortimer H. & Norton, James J.
Partner:
UNT Libraries Government Documents Department