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Arsenic: As
Comments: Bright, metallic, gray, crystalline aggregate or arsenic. Location: Niederschlema, Saxony, Germany. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Comments: Botryoidal-concentric aggregate of arsenic with white calcite crystals. Location: Schneeberg, Erzgebirge, Sachsen, Germany. Scale: 7 x 4 cm. © Thomas Witzke / Abraxas-Verlag
Arsenic: As Claudetite: As2O3
Comments: Colorless prismatic crystal of claudetite on native arsenic. Location: Jáchymov (St Joachimsthal), Krusné Hory (Erzgebirge), Západoceský Kraj, Bohemia, Czech Republic. Scale: Picture size 2 mm. © Thomas Witzke / Abraxas-Verlag