Grguricite
Grguricite is an IMA-recognized mineral species in the carbonate class, with the chemical formula CaCr₂(CO₃)₂(OH)₄·4H₂O.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Alumohydrocalcite structural group.
Key properties: Earthy luster.
IMA symbol Ggu, IMA status: approved, named in 2020.
A low-temperature secondary phase in a limestone-hosted, stratiform, Pb-Ba (galena- baryte) deposit.
It is found associated with Cerussite, galena, wulfenite, baryte, pyromorphite.
The mineral was named to honor Australian geologist Ben Grguric (b. 1971).
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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