Description: Gypsum "Ram's Horn" Crystal Cave, lower levels, (like, maybe the 300 level) Mariposa Mine, California Hill, Terlingua Mercury District, Brewster County, Texas, USA 10.6 x 15.1 x 4.0 cm. Gail Spann specimen Joe Budd photo To start the mineralogy of the Lone Star State we used the image of this fine Gypsum from Gail Spann. Thanks Gail!

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