Chalcedony from Salt Lake County, Utah, USA
USA | |
| King, Van (n.d.) Personal communcation. |
[Agate var. Onyx] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
USA | |
| King, Van (n.d.) Personal communcation. |
[Agate var. Onyx] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |