Orthose

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Two large, very sharp, lustrous white orthoclase crystals on a massive orthoclase base covered with thick tablets of mica, small black schorl crystals and a few light pink apatite crystals. The orthoclase crystals are Baveno law twins.

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Mineral guide
Learn about Orthoclase
classic potassium feldspar with colors from colorless to pink; famed for Carlsbad, Baveno and Manebach twins and Alpine adularia in clefts.
Regional guide
Orthoclase from Shigar Valley
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