SEM image of tabular quadrangular crystals of Uramarsite. Usually they are light-yellow or slightly greenish-yellow colour and are similar to any uranoan mica. These crystals grow in small cavities within massive native Arsenic and usually are underlayed by bothrioidal crusts of Goethite. Uramarsite is represented here Ni-Cu-bearing variety transitive to Rauchite and Zeunerite. Analytical data are available on the daughter photo. Collected in the end of 60th. Pavel M. Kartashov collection and photo.
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