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About 3 cm measuring ulexite nodule (so-called "cotton ball") in massive anhydrite. Sample from the first place ulexite was found in Germany, the Niederellenbach quarry near Rothenburg, Hesse. From the collection of Sigmund Koritnig who described the mineral from Niederellenbach. (Author: Andreas Gerstenberg)
| Dimensions: | 600 x 450 |
| File size: | 28.88 kbytes |
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