LithoCat

MineralSerpierite
FormulaCa(Cu,Zn)4(SO4)2(OH)6 • 3(H2O)  
Crystal FormMonoclinic/Prismatic [2/m]
CleavagePerfect on {001}
ColorDark sky-blue ("linarite-blue") to Medium sky-blue; Greenish blue in transmitted light
Density3.1 g/cm3
DiaphaneityTransparent
FractureSplintery
Hardness2.0
LustrePearly
StreakWhite or Pale blue
Dana 8 Class31.6.2.1
Strunz ClassVI/D.19-20
Mindatmindat.org
WebMineralWebMineral
ID128