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Formula: (NH4)4NaFe2(SO4)4Cl(OH)2
Sulphate
Crystal System: Tetragonal
Specific gravity: 2.18 measured, 2.195 calculated
Streak: White
Colour: Pale yellow
Luminescence: No fluorescence under UV
Common impurities: K,Al
Environments
Occurrence
Localities
The type locality is La Fossa crater, Vulcano Island, Lipari, Eolie Islands, Metropolitan City of Messina, Sicily,
Italy. On the holotype specimen, adranosite-(Fe) is associated with
thermessaite,
pseudocotunnite and
bismuthinite. On the cotype specimen from a different fumerole the
association is with barberiite,
salammoniac, anhydrite,
sassolite and sulphur.
An anthropogenic product was previously observed in a burning coal dump at the Anna mine, near Aachen, Germany. This
anthropogenic adranosite-(Fe) is mainly accompanied by the ammonium salts
clairite, tschermigite,
rostite/khademite and
boussingaultite/mohrite.
Adranosite-(Fe) forms aggregates of pale yellow acicular crystals up to 1 mm in length; no twinning is
apparent. The mineral is not hygroscopic and is stable in open air
(CM 51.57-66).
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