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Gadolinite-(Y)

Type Locality
Ytterby, Resarö, Vaxholm, Uppland, Sweden
Mineral Data
Y2Fe2+Be2Si2O10
Strunz: 
9.AJ.20
Physical Properties
Crystal System: 
Monoclinic
Hardness: 
6.5 - 7.0
Tenacity: 
brittle
Synonyms
Synonyms: 
Gadolinite-Y, Gadolinite Y and Gadolinite - Y
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