| 7idceis ((SPHALERITE)), Academy of Natual Sciences Phila., $1 MINIMUM BID, Arkansas, 3.3 x 2.3 x 1.3 cm, Thumbnail | |
 | Here is a specimen from the Academy of Natural Sciences Philadelphia. It is a resinous lustrous crystal of Sphalerite from Arkansas. ANSP #A126, no label, just tape on the specimen. |
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