Formula :
Fe23+[SeO3]3 * 6 H2O
System: monoclinic Hardness:2½ Rarity:very rare
Strunz id:IV/K.8-10 -
OXIDES and HYDROXIDES
Name origin: Named in honor of Joseph Anthony Mandarino (1929-2007), American-Canadian mineralogist, former Curator of Mineralogy, Royal Ontario Museum, Toronto, Ontario, for his many outstanding contributions to mineralogy, “in particular the insights he has provided into the relationships of the Gladstone-Dale rule.” He also contributed greatly to the formalization of mineral systematics as Chairman of IMA CNMMN.
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