Gaitite

arsenate

talmessite

Formula: Ca2Zn(AsO4)2.2H2O
Hydrated normal arsenate, fairfieldite group, forms a series with talmessite, dimorphous with zincroselite.
Specific gravity: 3.81
Hardness: 5
Streak: White
Colour: Colourless, white
Environments:

Hydrothermal environments

Gaitite is a very rare secondary arsenate mineral.

At the type locality, the Tsumeb Mine, Oshikoto Region, Namibia, gaitite occurs in a dolostone - hosted, hydrothermal, polymetallic ore deposit, associated with talmessite, prosperite, adamite, conichalcite, austinite, baryte, quartz and chalcocite (HOM).

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