Feynmanite
Feynmanite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Na(UO₂)(SO₄)(OH)·3.5H₂O.
It crystallizes in the monoclinic crystal system (space group P2/n).
IMA symbol Fey, IMA status: approved, named in 2017.
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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