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Picropharmacolithe needles with red erythrite, white guerinite crystals and some weilite (white crusts) from the Wechselshaft, Richelsdorf, Hesse. The sample measures about 7 cm in width. (Author: Andreas Gerstenberg)
| Dimensions: | 600 x 450 |
| File size: | 33.08 kbytes |
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