Kukharenkoite-(La)
Kukharenkoite-(La) is an IMA-recognized mineral species in the carbonate class, with the chemical formula Ba₂La(CO₃)₃F.
It crystallizes in the monoclinic crystal system (space group P2_1/m).
Key properties: Mohs hardness 4; specific gravity 4.65; White streak; Vitreous luster; optically biaxial.
IMA symbol Kkk-La, IMA status: approved, named in 2002.
A late hydrothermal mineral in cavities in pegmatite veins cutting an alkaline igneous complex.
It is found associated with Microcline, albite, calcite, nenadkevichite, hilairite, catapleiite, strontianite, donnayite-(Y), synchysite-(Ce), pyrite (one vein); pectolite, aegirine.
As the Lanthanum-dominant analog of kukharenkoite-(Ce).
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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