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Copper, minor chrysocolla
Knife River, St. Louis County, Minnesota, USA
Specimen 12 X 9 X 6 cm
Field of view is about 4 cm, the main rough crystal is 2.5 cm and protrudes up out of the matrix. (Author: John Nash)
| Dimensions: | 750 x 498 |
| File size: | 72.76 kbytes |
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