Metavanmeersscheite
Metavanmeersscheite is an IMA-recognized mineral species in the phosphate class, with the chemical formula U(UO₂)₃(PO₄)₂(OH)₆·2H₂O.
It crystallizes in the orthorhombic crystal system (space group Fddd).
Key properties: specific gravity 4.49; optically biaxial.
IMA symbol Mvms, IMA status: approved, named in 1981.
A rare secondary mineral found in the uraniferous zone of an altered granite pegmatite, formed by dehydration of vanmeersscheite.
It is found associated with Vanmeersscheite, studtite.
The prefix meta- denotes the dehydration product of vanmeersscheite.
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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