Calcite from Montgomery County, Virginia, USA
USA | |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Mike Dennis |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. |
ACCO Stone Quarry, Blacksburg, Montgomery County, Virginia, USA