Amamoorite
Amamoorite is an IMA-recognized mineral species in the silicate class, with the chemical formula CaMn²⁺₂Mn³⁺(Si₂O₇)O(OH).
It crystallizes in the monoclinic crystal system (space group P2_1/a). It is a member of the Ilvaite structural group.
Key properties: Mohs hardness 6; specific gravity 3.88; Brown streak; Vitreous luster; optically biaxial.
IMA symbol Amo, IMA status: approved, named in 2018.
Found in a metamorphosed manganese ore deposit.
It is found associated with Braunite, hausmannite.
The name is derived from the locality of the first specimens, the Amamoor mine.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more A minerals or help write this entry.