Whitish-yellow crystals of the rare borate mineral tyretskite from the second known locality worldwide: Inder B Deposit, Atyrau, Atyrau Oblysy, Kazakhstan. — Photo: David Hospital · CC BY-SA 4.0
Tyretskite
Tyretskite is an IMA-recognized mineral species in the borate class, with the chemical formula Ca₂B₅O₉(OH)·H₂O.
It crystallizes in the triclinic crystal system. It is a member of the Hilgardite structural group.
IMA symbol Tyr, IMA status: approved, named in 1968.
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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