FMF Minerals Gallery

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Same specimen, from the side. Note that the galena cube has undergone expansion when it altered to anglesite and cerussite. I like these expanded galena cubes, in part because they are the opposite of exfoliation, the weathering process that produces rounded boulders. Microcrystalline cerussite makes the ex-galena surfaces glitter. Gift of Dr. Peter Megaw (Author: Ed Huskinson)