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Formula: (NH4)2Zn(SO4)2.6H2O
Hydrated sulphate, picromerite group
Crystal System: Monoclinic
Specific gravity: 1.97 measured, 1.986 calculated
Hardness: 2½
Streak: White
Colour: White, pale blue, pale green
Environments
Metamorphic environments
Hydrothermal environments
Katerinopoulosite is a relatively new mineral, approved in 2017.
Localities
At the type locality, the Esperanza Mine, Kaminiza mines, Km 3, Lavrion Mining District, Lavreotiki, East Attica,
Greece, katerinopoulosite is a secondary mineral
formed in the oxidation zone of a sphalerite-rich deposit situated in
the contact zone between calcite
marble and mica
schist. Associated minerals include
chalcanthite,
nickelboussingaultite,
ammoniojarosite,
aurichalcite and goethite.
Katerinopoulosite forms white, pale blue or pale green vermiform polycrystalline aggregates
(EJM 30.4.821-826, HOM).
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