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Bergakademie Freiberg label of a boracite from the Schildstein quarry, Lüneburg, Lower Saxony. The Kalkberg quarry is the type locality of boracite. However, Schildstein boracites are very rare! About 1900. (Author: Andreas Gerstenberg)
| Dimensions: | 600 x 428 |
| File size: | 41.8 kbytes |
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