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Formula: (NH4)Zn(PO4)
Phosphate, hexagonal paramorph of monoclinic
epiebnerite
Crystal System: Hexagonal
Specific gravity: 2.78 measured, 2.80 calculated
Hardness: 2
Streak: White
Colour: Colourless
Luminescence: No fluorescence under long wave or short wave UV
Solubility: At room-temperature, ebnerite is insoluble in water, but easily soluble in dilute hydrochloric
acid
Environments
Ebnerite is a new mineral, approved in 2023 and to date (November 2024) reported only from the type locality.
Localities
At the type locality, the 125 foot level, Rowley Mine, Theba, Painted Rock Mining District, Painted Rock Mountains,
Maricopa County, Arizona, USA, ebnerite and its paramorph
epiebnerite are new mineral species. They occur in an unusual bat-guano-related,
post-mining assemblage of phases. Epiebnerite grows epitactically on
ebnerite and replaces it. Ebnerite and epiebnerite are found in
intimate association with alunite, halite,
mimetite, newberyite,
sampleite, struvite and
wulfenite on hematite-rich
quartz–baryte matrix. Crystals of
ebnerite are colourless narrow prisms up to ~0.3 mm in length
(MM 88.3.312–318).
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