Galería de Minerales FMF

Para acceder al hilo de FMF donde está la foto

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)