Mica and beryl pegmatites in Idaho and Montana. A description of mines and prospects examined in each district, some illustrated by maps and structure sections.

Stoll, Walter Clericus, 1915-

Mica and beryl pegmatites in Idaho and Montana. A description of mines and prospects examined in each district, some illustrated by maps and structure sections. - Washington, U.S. Govt. Print. Off., 1950. - v, 64 p. illus., maps (8 fold. in pocket) 29 cm. - Geological Survey professional paper 229 . - Geological Survey (U.S.). Professional paper ; 229. .

gs 51000100


Mica
Beryl
Pegmatites

QE75 / .P9 no. 229

553.9

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