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Microcline

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A fine example for the species with very sharp crystals of helvite measuring to 0.5 cm in size across a crystallized white microcline matrix. Muscovite is present as well. The helvite crystals are brightly fluorescent red under longwave ultraviolet light.

Product details

SpeciesMicroclineHelvite
SizeCabinet
Dimensions11.5 x 6.0 x 4.5 cm
Added on07/18/2025
LocalityNavegadora Mine, Sao Geraldo de Baixo, Minas Gerais, Brazil

Owners

Unknown Owner
Current owner
Acquired
Jul 2025
WM
Weinrich Minerals

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Microcline
Mineral guide
Learn about Microcline
classic potassium feldspar with blocky crystals, dramatic twinning (Carlsbad, Manebach) and the vivid amazonite variety, a top Pikes Peak gem.