erovnuli-samecniero-biblioteka Search for 'au:"Jahns, Richard H."'

Mica deposits of the Petaca district, Rio Arriba County, New Mexico, with brief descriptions of the Ojo Caliente district, Rio Arriba County, and the Elk Mountain district, San Miguel County.

By Jahns, Richard H..
Socorro, 1946 .
294 p. , "Prepared by the Geological Survey, U. S. Department of the Interior." | Five of the folded maps are in pocket. 23 cm..

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Physical characteristics of commercial sheet muscovite in the southeastern United States,

By Jahns, Richard H..
Washington, U.S. Govt. Print. Off., 1950 .
iv, 110 p. , Prepared under a cooperative agreement with the State of North Carolina and the Tennessee Valley Authority. 29 cm..

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Pegmatite deposits of the White Picacho district, Maricopa and Yavapai Counties, Arizona.

By Jahns, Richard H..
Tucson, University of Arizona, 1952 .
105 p. 23 cm. and portfolio of 2 fold.plates, 7 fold.maps. 23 cm..

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Possibilities for discovery of additional lead-silver ore in the Palomas Camp area of the Palomas (Hermosa) mining district, Sierra County, New Mexico: a preliminary statement.

By Jahns, Richard H..
Socorro, 1955 .
14 p. 28 cm..

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The Pelican area, Palomas (Hermosa) district, Sierra County, New Mexico; preliminary map issue.

By Jahns, Richard H..
Socorro, State Bureau of Mines and Mineral Resources, | New Mexico Institure of Mining & Technology, 1957 .
5 p. , In an envelope. | Fold. col. map inserted. 23 cm..

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