Formula: Ca2Zn4(AsO4)4.H2O
Hydrated arsenate
Crystal System: Monoclinic
Specific gravity: 4.31 measured, 4.40 calculated
Hardness: 4½
Streak: White
Colour: Colourless, White
Environments
Prosperite is a rare secondary mineral.
At the type locality, the Tsumeb Mine, Oshikoto Region, Namibia, prosperite has been found in partly altered sulphide ore from a
dolostone - hosted hydrothermal polymetallic ore deposit, associated with
tennantite,
chalcocite, mercurian silver,
cuprite, cuprian adamite,
cuprian austinite, conichalcite,
stranskiite, lavendulan,
köttigite, tsumcorite,
koritnigite and o’danielite (HOM, AM 65.208).
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