LithoCat

MineralAnorthite
FormulaCaAl2Si2O8
Crystal FormTriclinic/Pinacoidal [1]
CleavagePerfect on {001}, Less so on {010}, Imperfect on {110}
ColorColorless, Reddish grey,White
Density2.7 – 2.8 g/cm3
DiaphaneityTransparent to Translucent
FractureIrregular/Uneven, Conchoidal
Hardness6.0 - 6.5
LustreVitreous
StreakWhite
Type Loc.Monte Somma, Somma-Vesuvius Complex, Naples Prov., Campania, Italy
Dana 8 Class76.01.03.06
Strunz Class8/J.07-70
Mindatmindat.org
WebMineralWebMineral
ID320