Yellow green crystals of the new mineral magnesioleydetite (IMA 2017-063) intermixed with also yellow green crystals of the also new mineral strassmannite, (IMA 2017-086). Analyzed specimen, see copy enclosed. Acicular white mineral associated is pickeringite. From: Widowmaker Mine, Fry Mesa, White Canyon, San Juan County, Utah, United States of America. — Photo: David Hospital · CC BY-SA 4.0
Straßmannite
Straßmannite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Al(UO₂)(SO₄)₂F·16H₂O.
It crystallizes in the monoclinic crystal system (space group C2/c). It is a member of the Leydetite structural group.
IMA symbol Sßm, IMA status: approved, named in 2018.
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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