LithoCat

MineralEurekadumpite
Formula(Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 ยท 7H2O
Crystal FormMonoclinic/Prismatic [2/m]
CleavagePerfect on {010}
ColorBright and deep blue-green to turquoise-colored
Density3.8 – 3.8 g/cm3
DiaphaneityTransparent, Translucent
FractureMicaceous
Hardness2.5 - 3.0
LustreSilky
Type Loc.Centennial Eureka Mine, Tintic District, East Tintic Mts, Juab Co., UT, USA
Dana 8 Class34.8.10.
Strunz Class4.JN.35
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ID466