General Information:
Chemical Formula:Pb3H2(Te++++O3)(Te++++++O6)
Composition:(Molecular Weight = 1,022.81 gm)Tellurium 24.95 %
TeHydrogen 0.20 %
H Lead 60.77 %
PbOxygen 14.08 %
O Empirical Formula: Pb3H2(TeO3)(TeO6)
Environment:Secondary tellurate.
IMA Status:Approved IMA 1979
Locality:Grand Central mine, Tombstone, Arizona, USA.
Name Origin:Named for Richard Gird (1836-1910), mining engineer and assayer, who made the first rich silver assays and helped open up the Tombstone district.
Physical Properties: Color:white or lemon white.
Density:5.5
Diaphaniety:Translucent
Habits:Spherical - Spherical, rounded aggregates., ,
Hardness:2 - Gypsum
Luminescence:Non-fluorescent.
Streak:white
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