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Geography Categories
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| Definition Of: |
Iridium
 General Information: Chemical Formula:(Ir,Os,Ru) Composition:(Molecular Weight = 182.50 gm)Iridium 63.20 % IrOsmium 31.27 % OsRuthenium 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 More details...
Atomic Mass : 192.22 Atomic Number : 77 Name Origins: Latin, Iris = "rainbow." Year Discovered : 1803 Discovery Credits : Discovered by S. Tennant at London, UK. More Details
Ir
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Mineralogy INDEX:
List of Terms: Terms beginning with "A", Page 1 |
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Page Number:
1 2 3 A: Page 1 of 3.
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