National Geologic Map Database
General Information
- Title: Pyrophyllite and kyanite and related minerals in the United States, exclusive of Alaska and Hawaii
- Author(s): Espenshade, G.H.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Mineral Investigations Resources Map MR-18
- Publication Date: 1962
- Map Scale: 1:3,168,000
- Cross Section: None
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