Nuragheite
A rare thorium molybdate monohydrate from Sardinia's Su Seinargiu — companion to the trihydrate ichnusaite.
Intro adapted from Wikipedia (CC BY-SA).
Nuragheite is an IMA-recognized mineral species in the molybdate class, with the chemical formula Th(MoO₄)₂·H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/c).
Key properties: specific gravity 5.147; Pearly to adamantine luster.
IMA symbol Nur, IMA status: approved, named in 2013.
Found in hydrothermal quartz veins by alteration of a Mo-Bi deposit.
It is found associated with Muscovite, xenotime-(Y), ichnusaite.
The name comes from “nuraghe”, the main type of ancient megalithic building found in Sardinia, Italy, and the symbol of Sardinia and the Nuragic civilization.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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