Copper-Zinc deposits of the Penn Mine Calaveras County, California
Open-File Report
45-51
By: George Richard Heyl, M.W. Cox, and J. H. Eric
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- Document: Report (pdf)
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- Plate 1 (pdf)
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Abstract
Suggested Citation
Heyl, G.R., Cox, M., Eric, J.H., 1945, Copper-Zinc deposits of the Penn Mine Calaveras County, California: U.S. Geological Survey Open-File Report 45-51, iii, 24 leaves ;27 cm., https://doi.org/10.3133/ofr4551.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Copper-Zinc deposits of the Penn Mine Calaveras County, California |
| Series title | Open-File Report |
| Series number | 45-51 |
| DOI | 10.3133/ofr4551 |
| Year Published | 1945 |
| Language | ENGLISH |
| Description | iii, 24 leaves ;27 cm. |