LithoCat

MineralFerrierite-Mg
Formula(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] • 5(H2O)
Crystal FormOrthorhombic/Dipyramidal [2/m 2/m 2/m]
Cleavage[100] Perfect
ColorWhite, colorless, pinkish, orange to red
Density2.1 – 2.1 g/cm3
DiaphaneityTransparent to Translucent
FractureUneven
Hardness3.0 - 3.5
LustreVitreous
StreakWhite
Dana 8 Class77.01.06.06
Strunz ClassVIII/J.22-05
Mindatmindat.org
WebMineralWebMineral
ID173