Pararaisaite
Pararaisaite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula CuMg[Te⁶⁺O₄(OH)₂]·6H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/c).
Key properties: Mohs hardness 2.5; specific gravity 2.85; White streak; Vitreous luster; optically biaxial.
IMA symbol Prsa, IMA status: approved, named in 2018.
An oxidation-zone mineral in a hydrothermal polymetallic Au-Ag-Cu-Pb vein deposit in contact-metamorphosed dolomite.
It is found associated with Barite, goldfieldite, malachite, quartz.
The Greek “para” for “near” and the relation to its C2/c dimorph raisaite.
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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