LithoCat

MineralUvite
FormulaCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(OH)
Crystal FormTrigonal/Ditrigonal Pyramidal [3m]
CleavageNone
ColorBlack, greenish-black, brownish-black, brown, red, green, colorless
Density3.0 – 3.1 g/cm3
DiaphaneityTransparent, Translucent
FractureIrregular/Uneven, Conchoidal
Hardness7.5
LustreVitreous, Resinous
StreakLight-brown, light-green, or whi
Dana 8 Class61.3.1.3
Strunz Class8/E.19-90
Mindatmindat.org
WebMineralWebMineral
ID215