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Metasideronatrite: Na2Fe+++(SO4)2(OH)·(H2O) Ungemachite: K3Na8Fe+++(SO4)6(NO3)2·6(H2O)
Comments: Translucent rounded ungemachite microcrystal on yellow metasideronatrite. Location: Chuquicamata, Antofagasta, Chile. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Metasideronatrite: Na2Fe+++(SO4)2(OH)·(H2O) Tamarugite: NaAl(SO4)2·6(H2O)
Comments: Orange metasideronatrite with white tamarugite. Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag