| 15dm891 ((CHALCOPYRITE, QUARTZ)), $15 MINIMUM BID, Chihuahua, Mexico, 10.5 x 8.5 x 4.5 cm, Cabinet | |
 | Here is a specimen with lustrous Chalcopyrite and needle like pin Quartz in a series of size from nearly hair like crystals to about 1 mm in width. I did clean it with the ultrasonic cleaner to get rid of the years of dust from being on display. ex Dennis McMurdie collection. |
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