White microcrystals of the extremely rare mineral darapiosite from the type and only known locality worldwide in Dara Pioz (Dara-i-Pioz Glacier, Tien Shan Mountains, Region of Republican Subordination, Tajikistan), associated to plenty of purple sugilite. — Photo: David Hospital · CC BY-SA 4.0
Darapiosite
Darapiosite is an IMA-recognized mineral species in the silicate class, with the chemical formula KNa₂Mn₂(Li₂ZnSi₁₂)O₃₀.
It crystallizes in the hexagonal crystal system (space group P6/mcc). It is a member of the Milarite structural group.
Key properties: Mohs hardness 5; specific gravity 2.92; optically uniaxial.
IMA symbol Dar, IMA status: approved, named in 1974.
Found in glacial moraine derived from an alkalic massif.
It is found associated with Aegirine, quartz, sogdianite, eudialyte, manganoan pectolite, polylithionite.
The name refers to the occurrence in the Dara-i-Pioz massif, Tajikistan.