Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.Quartz from Yaogangxian Mine, China
Yaogangxian Mine quartz, China — famed for pale quartz with purple fluorite cubes set in a tungsten-tin hydrothermal system; a premier locality for collectors.Yaogangxian Mine
A collector's guide to Yaogangxian Mine, China: its geology, mining history and notable minerals, illustrated with the 1584 specimens documented from this locality on EarthWonders.
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