Chromite in the United States, exclusive of Alaska and Hawaii
Mineral Investigations Resource Map
26
By: Thomas Prence Thayer and M. H. Miller
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- Document: Report (pdf)
- Plate: Plate 1 (pdf)
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Abstract
The chromite deposits in the United States (exclusive of Alaska and Hawaii) are shown on the accompanying map. In compiling the map, the deposits were classified in five size categories according to the estimated total quantity of chromite present before mining. The map shows, by different symbols, deposits of chromite in ultramafic rocks, beach sands in which chromite is an important constituent, and lateritic iron ores in which chromium has been concentrated by weathering of peridotite in situ. Although geologically significant amounts of chromium are known to occur in some gabbros and sedimentary rocks other than beach sands and laterite, the data are too fragmentary to show on the map.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Chromite in the United States, exclusive of Alaska and Hawaii |
| Series title | Mineral Investigations Resource Map |
| Series number | 26 |
| DOI | 10.3133/mr26 |
| Year Published | 1962 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | Report: 5 p.; 1 Plate: 64.32 x 40.64 inches |
| Country | United States |
| Scale | 3168000 |