Chromite resources of the podiform chromite deposits and exploration for concealed chromite deposits in the Medford-Coos Bay quadrangles, southwestern Oregon
Open-File Report
77-656
By: Norman J. Page and Maureen G. Johnson
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Abstract
Exploration models for podiform chromite in the Medford-Coos Bay quadrangles must consider the facts that (1) one deposit occurs for every 5 km 2 of ultramafic outcrop; similarly for a 5 km 3 volume, and (2) the average deposit has a tonnage of 206 tonnes, a volume of 8.9 m 3 and a grade between 43 and 51 percent Cr2O3.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Chromite resources of the podiform chromite deposits and exploration for concealed chromite deposits in the Medford-Coos Bay quadrangles, southwestern Oregon |
| Series title | Open-File Report |
| Series number | 77-656 |
| DOI | 10.3133/ofr77656 |
| Year Published | 1977 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | ii, 14 leaves :ill., maps ;27 cm. |