Orthoclase: Mineral information, data and localities.

Orthoclase (Carlsbad twin from the original locality!) Loket, Sokolov District, Karlovy Vary Region, Czech Republic

Orthoclase, Feldspar, Silicate, Mohs Scale

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Natural Smokey Quartz & Aegirine Specimens (Some With Orthoclase) x 3 From Zomba, Malawi

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Orthoclase: Mineral information, data and localities.

Orthoclase Mineral Information photos and Facts, gems

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Orthoclase: Mineral information, data and localities.

Potassium Feldspar – WGNHS – UW–Madison

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EJM - Partial melting of amphibole–clinozoisite eclogite at the pressure maximum (eclogite type locality, Eastern Alps, Austria)