Mineral: Quartz, Feldspar, Opal (variety hyalite)
Locality: Erongo Mountain, Usakos, Erongo Region, Namibia
Dimensions: 114 mm x 114 mm x 75 mm

Description: Quartz, Feldspar, Hyalite Opal (fluorescent) Epitaxial growth of Gitter Quartz on a sharply terminated Orthoclase Feldspar crystal

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