Guimarãesite
Guimarãesite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Ca₂Be₄Zn₅(PO₄)₆(OH)₄·6H₂O.
It crystallizes in the monoclinic crystal system (space group C2/c). It is a member of the Roscherite structural group.
IMA symbol Grã, IMA status: approved, named in 2006.
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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