Black Anorthoclase Crystal Clustrer
Collection
American Museum of Natural History
Description
Crystal cluster of black Anorthoclase, a rare member of the
feldspar
group. Specimen on exhibit in the
tectosilicates
themed display case at the American Museum of Natural History in New York.
Locality
Tjolling, Norway
Dimensions
Specimen Grade
B
Photograph
Hershel Friedman Photo
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