General Information:
Chemical Formula:Cu3Te++++++O4(OH)4
Composition:(Molecular Weight = 450.26 gm)Copper 42.34 %
CuTellurium 28.34 %
TeHydrogen 0.90 %
H Oxygen 28.43 %
O Empirical Formula: Cu3(TeO4)(OH)4
Environment:In cracks in altered rhyolite.
IMA Status:Approved IMA 1975
Locality:Bambollita mine, Moctezuma, Sonora, Mexico.
Name Origin:Named for the Nahuatl for "bunches of grapes", in allusion to the appearance of the green spherules of the mineral.
Physical Properties: Color:green or emerald green.
Density:4.65
Habits:Spherical - Spherical, rounded aggregates., Botryoidal - "Grape-like" rounded forms (e.g.. malachite)., Radial - Crystals radiate from a center without producing stellar forms (e.g. s tibnite)
Hardness:4 - Fluorite
Luminescence:Non-fluorescent.
Streak:light green
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