29 juillet 2013
Rhodochrosite, Limonite, Marcasite, Chalcedony, Nepheline, Sodalite, Octahedrite
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Rhodochrosite - Peru Limonite after Marcasite Desert Concretion - Morocco Chalcedony geode - New Mexico Nepheline coated by Sodalite and colored by electric-blue Nosean flecks in the clear Sodalite - Afghanistan Polished slice of an Octahedrite iron meteorite,...