LithoCat

MineralTschernichite
Formula(Ca,Na)(Si6Al2)O16 • 4-8(H2O)  
Crystal FormTetragonal/Ditetragonal-Dipyramidal [4/m 2/m 2/m]
CleavageNone
ColorColorless, Milky white
Density2.0 g/cm3
DiaphaneityTransparent to Translucent
FractureBrittle - Conchoidal
Hardness4.5
LustreVitreous
StreakWhite
Type Loc.Neer Road Pit, Goble, Columbia Co., OR, USA
Dana 8 Class77.1.8.2
Strunz ClassVIII/J.26-40
Mindatmindat.org
WebMineralWebMineral
ID46