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Ottrélite

Type Locality
Ottré, Vielsalm, Stavelot Massif, Luxembourg Province, Belgium
Mineral Data
(Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2
Strunz: 
9.AF.85
Physical Properties
Hardness: 
6.0 - 7.0
Synonyms
Synonyms: 
Ottrelite