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Formula: Pb3Zn3TeO6(PO4)2
Anhydrous phosphate, dugganite group,
tellurium-bearing mineral, forms a solid solution (and is isostructural)
with joëlbruggerite and
dugganite.
Crystal system: Trigonal
Specific gravity: 6.21 calculated
Hardness: 5
Streak: White
Colour: Grey
Luminescence: Weak fluorescence
Environments
Localities
At the type locality, the Delbe orebody, Kuranakh ore field, Aldan, Sakha, Russia, kuksite occurs as thin
tabular crystals, 0.1 to 0.3 mm in size, associated with
cheremnykhite, dugganite,
yafsoanite, descloizite
and Te-Pb-Mn-saponite, as a late-stage interstitial mineral in
calcite of the Kuranakh gold
deposit. In hand specimens kuksite is grey and turbid, and transparent in transmitted light
(AM 77.1.446-452).
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