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Fluorite and Calcite
Boltsburn Mine, Rookhope District, Weardale, North Pennines Orefield, County Durham, England / United Kingdom
4.6 cm x 8.7 cm x 12.3 cm.
(Author: Michael Shaw)
| Dimensions: | 1600 x 1077 |
| File size: | 378.22 kbytes |
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