Tremolite from Oregon, USA
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
Oregon Metal Mines Handbook, 1952, Oregon Department of Geology and Mineral Industries: Bulletin No. 14-C, Vol. 2, Section 1 - Josephine Co., 2nd Edition, page 132. | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |