Hydrated normal arsenate, fairfieldite group, forms a series with talmessite, dimorphous with zincroselite.
Specific gravity: 3.81
Colour: Colourless, white
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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