Tetrahedrite Subgroup from selected localities.
USA | |
| U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia. |