Little yellow sal ammoniac crystals on "fried" conglomerate from the Alstaden coal mine, Oberhausen, Westphalia. Here gorgeous sceleton-crystals up to 3,5 cm were found but till I will get such a killer I make do with the shown one... (Author: Andreas Gerstenberg)
Dimensions: | 600 x 450 |
File size: | 29.29 kbytes |
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