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Comments: Dark green crystals of olivenite on matrix.
Location: Majuba Hill mine, Pershing County, Nevada, USA.
Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
Olivenite: Cu2AsO4(OH) Arsenogoyazite: (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5·(H2O)
Comments: White micro-botryoids of arsenogoyazite with light green acicular crystal sprays of olivenite and dark green malachite on brown limonite.
Location: Centennial Eureka Mine, Juab County, Utah.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species