This amygduloidal basalt sample type is from the Monterey quadrangle. This is from the no data era
Supplemental Information: For additional information, contact the Virginia Department of Mines, Minerals, and Energy's Division of Geology & Mineral Resources on the web at: http://www.dmme.virginia.gov/divisionmineralresources.shtml
| Dataset Reference Date: | 1972-01-01 00:00:00.0 |
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