Rutile from Ohio, 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. |
| Bownocker, J. A., 1926. Glass sands of Ohio. Ohio Journal of Science 26(1): 25-41. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |