Topaz crystal, 7.1 cm, from the Little Three mine near Ramona, San Diego County, California. Collected by Louis Spaulding Sr. in 1976; ex collections of Louis Spaulding, Jr., Cal Graeber, Frank Knechtel, Chuck Houser, and Rob Lavinsky. Exhibited at The Perot Museum of Nature and Science. Photo: Robert Mosley.
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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