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Russia | |
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USA | |
| Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008. Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare earth pegmatite in Burnett County, Texas. Mineralogical Record, 8 (2): 88-90. |
| Frondel, C. (1961) Two yttrium minerals Landes, K.K. (1932) The Barringer Hill, Texas, pegmatite. The American Mineralogist: 17(8): 381-390. Dana 6 spencite and rowlandite. The Canadian Mineralogist: 6: 576-581. |
| Ewing, R.C. & Ehlmann, A.J. (1973) Yttrialite and uraninite, additional minerals from the Rode Ranch pegmatite, Central Mineral Region, Texas. American Mineralogist 58: 545-547. R&M 66:3 pp. 196-224. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
Tommotskii Massif, Tommot river, Selennyakh range, Cherskii range system, Polar Yakutia, Sakha, Russia