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Fluorite, Chalcopyrite
Mahoning No. 4 Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA
7.6 x 7.0 cm
(Author: am mizunaka)
| Dimensions: | 1600 x 1067 |
| File size: | 431.24 kbytes |
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