Metauranospinite
Metauranospinite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Ca(UO₂)₂(AsO₄)₂·8H₂O.
Key properties: Mohs hardness 2–3; specific gravity 3.65; Pearly on {010} luster; optically biaxial.
IMA symbol Musp, IMA status: approved, named in 1958.
A secondary mineral of the oxide zone in a hydrothermal polymetallic barite–fluorite deposit.
The prefix meta- denotes the dehydration product of uranospinite.
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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