General Information:
Chemical Formula:
(Ir,Os,Ru)
Composition:
(Molecular Weight = 182.50 gm)
Iridium 63.20 % Ir
Osmium 31.27 % Os
Ruthenium 5.54 % Ru
Empirical Formula:
Ir0.6Os0.3Ru0.1
Locality:
CALIFORNIA
Name Origin:
Named after the element Iridium which was from the Latin, Iris = "rainbow" in allusion to the colored salts derived from its compounds.
Physical Properties:
Cleavage:
None
Color:
white.
Density:
22.6 - 22.8, Average = 22.7
Diaphaniety:
Opaque
Hardness:
6-7 - Orthoclase-Quartz
Luminescence:
Non-fluorescent.
Luster:
Metallic
Streak:
white
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