Corundum deposits of Montana
By: by Stephen E. Clabaugh.
Series: Geological Survey bulletin -- 983
Publisher: U.S. G.P.O.
Published: 1952
Place of publication: Washington
Language: eng
Number of pages: 100
Subjects: Corundum -- Montana.; Placer deposits -- Montana.; Sapphires -- Montana.; Geology -- Montana.; Sapphire mines and mining -- Montana.; Dikes (Geology) -- Montana.; Mines and mineral resources -- Montana.; Rocks, Metamorphic -- Montana.; Rocks, Igneous -- Montana.; Rocks, Sedimentary -- Montana.
Notes: Six folded plates in pocket.

"A description of one of the three commercial deposits found in the United States"--t.p.

Includes bibliographical references (p. 96-98) and index.