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Sphalerite
Grace Walker Mine, Picher Field, Ottawa Co., Oklahoma
7.1 x 11.9 cm
Resinous brownish-black sphalerite crystals to 2.5 cm with epitactic chalcopyrite and small "ruby jack" sphalerite on chert. (Author: crosstimber)
| Dimensions: | 750 x 510 |
| File size: | 64.82 kbytes |
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