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Ungemachite: K3Na8Fe+++(SO4)6(NO3)2·6(H2O) Metasideronatrite: Na2Fe+++(SO4)2(OH)·(H2O)
Comments: Translucent rounded ungemachite microcrystal on yellow metasideronatrite.
Location: Chuquicamata, Antofagasta, Chile.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species