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Urals Region, Russia
© Paul Bongaerts
|System:||Isometric||Hardness:||6 - 7|
Natural iridium often contains distinct amounts of Os, Ru or Pt.
The definition of iridium now incorporates old "osmiridium" and "ruthenosmiridium" mineral species (all have Ir as the dominant element).
See also (hexagonal) rutheniridosmine.
Note: The type locality is not determined.
Classification of Iridium
|Strunz 8th edition ID:||1/A.14-30|
|Nickel-Strunz 10th (pending) edition ID:||1.AF.10|
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
F : Platinum group elements
|Dana 7th edition ID:||18.104.22.168|
|Dana 8th edition ID:||22.214.171.124|
1 : NATIVE ELEMENTS AND ALLOYS
2 : Platinum Group Metals and Alloys
|Hey's CIM Ref.:||1.77|
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
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Physical Properties of Iridium
|Hardness (Mohs):||6 - 7|
Crystallography of Iridium
|Cell Parameters:||a = 3.83Å|
|Unit Cell Volume:||V 56.18 Å³ (Calculated from Unit Cell)|
Optical Data of Iridium
Chemical Properties of Iridium
|All elements listed in formula:||Ir, Os, Ru|
Relationship of Iridium to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
|Related Minerals - Dana Grouping):|
Other Names for Iridium
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Iridium
Canadian Mineralogist: 12: 104-112.
Canadian Mineralogist (1991): 29: 231-237.
Internet Links for Iridium
Localities for Iridium
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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Locality Updated: Vermont Danby Quarry (Danby Marble Company Quarry; Danby Quarry; Danby Imperial Quarry; Vermont Marble Co. Danby Quarries; Grady; Bradford; New York Cullen; Imperial; Upper Imperial; Brook No. 1 and No. 2), Danby, Rutland Co., VerFrom Chester S. Lemanski, Jr., 19th Jun 2013 13:08:55