chalcophyllite |
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| navigate by keyword : abstract arsenate beautiful beauty blue chalcophyllite close closeup cluster copper crystal crystalline crystallized crystals detail elegant fibrous fine formation gem gemmology gems gemstone geologists geology isolated macro material mineral mineralogy natural nature needles organic oxidized pattern precious prism raw rock semiprecious shape sharp specimen stone surface texture trigonal unique |
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| Chalcophyllite blue crystal from New Mexico, USA. A very rare, secondary copper arsenate mineral occurring in the oxidized zones of some arsenic-bearing copper. It crystallizes in the trigonal class. |
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