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USA | |
| Rocks & Minerals (1991): 66:3: 196-224. Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Frondel, C. (1961) Two yttrium minerals Landes, K.K. (1932) The Barringer Hill, Texas, pegmatite. The American Mineralogist: 17(8): 381-390. spencite and rowlandite. The Canadian Mineralogist: 6: 576-581. |
| 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. Self-collected by Franklin Roberts. |
| Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622 |
| Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA. Plumlee, Geoffrey S., Whitehouse-Veaux, Pamela Heald (1994) Mineralogy, paragenesis, and mineral zoning of the Bulldog Mountain vein system, Creede District, Colorado. Economic Geology, 89 (8). 1883-1905 doi:10.2113/gsecongeo.89.8.1883 November 1964 v. 59 no. 7 American Mineralogist 50:284 |
Petrick pegmatite, Kingsland Granite Company Quarry, Llano County, Texas, USA