Formula: (Zn1-xAlx)(SO4)x/2(OH)2.nH2O
(x<0.5, n>3x/2)
Hydrated sulphate containing hydroxyl, glaucocerinite group
Crystal System: Hexagonal
Specific gravity: 2.749 measured, 2.33 calculated
Hardness: 1
Streak: Bluish white
Colour: Sky-blue, turquoise-blue, greenish, greyish, brownish
Solubility: Soluble in hydrochloric acid (AM 17.495)
Environments
The type locality is the Serpieri Mine, Kamariza Mines, Agios Konstantinos, Lavrion mining district, Lavreotiki, East Attica,
Greece.
Here glaucocerinite is a rare secondary mineral on museum
specimens
from a copper-zinc sulphide deposit. It is
found as a fine
botryoidal coating on adamite
or with gypsum in vugs in smithsonite
(AM 19.556). Associated minerals include smithsonite,
adamite, ktenasite,
serpierite, malachite,
azurite, gypsum,
pyrite, galena,
sphalerite, fluorite,
calcite and limonite
(HOM, Dana).
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