Map showing mineral resource assessment for silver, cobalt, and base metals in Proterozoic sedimentary rocks and for iron, chromium, nickel, talc, chlorite, gold, and graphite in Archean crystalline rocks, Dillon 1 x 2 quadrangle, Idaho and Montana /
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| Format: | Government Document Map |
| Language: | English |
| Published: |
Reston, Va. :
The Survey ;
1990.
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| Series: | Miscellaneous investigations series (Geological Survey (U.S.)) ;
map I-1803-D. |
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| Item Description: | Relief shown by contours and spot heights. "Data compiled 1980-85." Includes text, bibliography, location map, and 2 ancillary maps. Cartographic material. |
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| Physical Description: | 1 map : color ; 44 x 63 cm., on sheet 96 x 117 cm., folded in envelope 30 x 24 cm. |