Topaz crystal, 6.4 cm, with cleavelandite and elbaite from the Little Three mine near Ramona, San Diego County, California. Ex collections of George F. Kunz, Irénée DuPont, and the University of Delaware. Photo by László Kupi.
hard, glassy orthorhombic crystals from pegmatites and rhyolites; colors range from colorless to pink; sharp terminations aid identification, localitie…
A collector's guide to Little Three Mine, USA: its geology, mining history and notable minerals, illustrated with the 332 specimens documented from this locality on EarthWonders.
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