Niigataite exhibited at the Mining Museum of Akita University — Photo: 掬茶 · CC BY-SA 4.0
Niigataite
Niigataite is an IMA-recognized mineral species in the silicate class, with the chemical formula CaSrAl₃[Si₂O₇][SiO₄]O(OH).
It crystallizes in the monoclinic crystal system (space group P2_1/m). It is a member of the Clinozoisite, Epidote structural group.
IMA symbol Nii, IMA status: approved, named in 2001.
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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