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Hajar | all galleries >> Mineral Galleries >> Crystal Twins >> Twins of Monoclinic Minerals >> Feldspar Twin Crystals > Baveno-twinned orthoclase with albite, 5 cm. Montnegre Massif, Sant Celoni, Barcelona Province, Spain.
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28-APR-2012

Baveno-twinned orthoclase with albite, 5 cm. Montnegre Massif, Sant Celoni, Barcelona Province, Spain.

The respective c-axes are parallel to the two lower edges.

The larger faces either side of the twin plane are {110}. The smaller triangular faces above them are {201} and the two bevels at the top are {111}.

Sony Alpha 77
1/25s f/20.0 at 105.0mm iso400 full exif

other sizes: small medium large original auto
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