General Information:
Chemical Formula:
Cu9Si10O29·11(H2O)
Composition:
(Molecular Weight = 1,514.92 gm)
Silicon 18.54 % Si
Copper 37.75 % Cu
Hydrogen 1.46 % H
Oxygen 42.24 % O
Empirical Formula:
Cu9Si10O29·11(H2O)
Environment:
Garnet diopside tactite zone.
IMA Status:
Approved IMA 1979
Locality:
Christmas Mine, Gila, Arizona, USA.
Name Origin:
Named for the Apache Indians, whose reservation is near the locality.
Physical Properties:
Color:
blue.
Density:
2.8
Diaphaniety:
Translucent
Habits:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Spherical - Spherical, rounded aggregates.,
Hardness:
2 - Gypsum
Streak:
light blue
More details...