Rhyolite from Texas, USA

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USA
Texas Brewster County Christmas Mountains ⓘ Christmas Mountain deposit (Piedra Azul)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Unnamed prospect at Mount Williams (EM-BR-U27-6)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Unnamed prospects between Corazones Peaks (EM-BR-U27-7)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Unnamed prospects west of Corazones Peaks (EM-BR-U27-7)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Lowe prospect	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Unnamed prospect at Abobe Walls Mountain (EM-BR-U26-3)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Hudspeth County Allamoore Talc Mining District ⓘ Neal Mann prospect	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Eagle Mountains ⓘ Spar Valley Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Rhyolite vein	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Sierra Blanca Peaks ⓘ Round Top prospects	Piccione, G., Rasbury, E. T., Elliott, B. A., Kyle, J. R., Jaret, S. J., Acerbo, A. S., ... & Parrish, R. R. (2019). Vein fluorite U-Pb dating demonstrates post–6.2 Ma rare-earth element mobilization associated with Rio Grande rifting. Geosphere, 15(6), 1958-1972. Elliott, Brent A. (2018) "Petrogenesis of Heavy Rare Earth Element Enriched Rhyolite: Source and Magmatic Evolution of the Round Top Laccolith, Trans-Pecos, Texas" Minerals 8, no. 10: 423. https://doi.org/10.3390/min8100423 Weng, Z. H., Jowitt, S. M., Mudd, G. M., & Haque, N. (2013). Assessing rare earth element mineral deposit types and links to environmental impacts. Applied Earth Science, 122(2), 83-96.
Llano County ⓘ Llanite rhyolite occurrence	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Presidio County ⓘ Solitario	Carsrud, Corbin Tyler (2019) Patterns of Conglomerate Deposition Associated with the Unroofing of the Solitario Dome, Presidio and Brewster Counties, Texas. Sul Ross State University. Henry, Christopher D., Kunk, Michael J., Muehlberger, William R., McIntosh, W. C. (1997) Igneous evolution of a complex laccolith-caldera, the Solitario, Trans-Pecos Texas: implications for calderas and subjacent plutons. Geological Society of America Bulletin, 109 (8) 1036 doi:10.1130/0016-7606(1997)109<1036:ieoacl>2.3.co;2