Cortlandite. Cortland, USA.

Thin Section Microscope Slide of rock from Stony Point Rockland, New York State, USA. This is part of an Ultramafic intrusion with some most unusual rock Types. This one contains olivine, rose pink highly pleochroic orthopyroxene, and dark brown pleochroic poikilitic kaersutite amphibole. (encloses other minerals). This makes it a cortlandite, a very rare rock indeed. The minerals are fresh and mostly unaltered.

 VERY rare and difficult to obtain, attractive, and very instructive. Limited material so this is expensive I'm afraid.

1 Slide

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