LithoCat

MineralCoronadite
FormulaPb(Mn4+,Mn3+)8O16
Crystal FormMonoclinic/Prismatic [2/m]
CleavageNone
ColorDark grey, Black
Density5.2 – 5.5 g/cm3
DiaphaneityOpaque
Hardness4.5 - 5.0
LustreSub-metallic, Dull
StreakBrown-black
Dana 8 Class7.9.1.4
Strunz ClassIV/D.08-70
Mindatmindat.org
WebMineralWebMineral
ID186