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USA | |
| Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622 |
| Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622 |
| Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Barnes, V. E., Dawson, R. F., & Parkinson, G. A.(1947): Building stones of central Texas: Univ. Texas Bull, 4246, 198. |
| Arthur Smith, Frank Roberts, Denise Bicknell (2008) Mineral News, 24, #1, 6-7. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622 |
| Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |