a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.
Regional guide
Quartz from Orange River, Southern Africa
Orange River quartz - hematite-bearing quartz with red phantoms, brick-red cores, and clear overgrowths; a district-wide classic with amethyst variants.
Locality guide
Orange River
A collector's guide to Orange River, Namibia: its geology, mining history and notable minerals, illustrated with the 218 specimens documented from this locality on EarthWonders.
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