Osmiridium

A variety of iridium rich in osmium, but still isometric. Originally reported from Urals Region, Russia. The term is also commonly used for mixtures of various Os-Ir-Ru alloys, usually with a composition dominated by osmium or iridium.

History

Activities related to discovery and approval of the group members

Structural context

Osmiridium

Crystal System isometric

a3.84

b3.84

c3.84

alpha90

beta90

gamma90

volume56.6

Based on 1 measurements

Chemical context

Stoichiometric formulas

Osmiridium

mindat.org

March 13, 2023(Ir,Os,Ru)

mineralogy.rocks

Aug. 30, 2022(Ir,Os,Ru)

Elements recorded on EPMA

1

Ir

1

Os

Physical properties

Lustre

Metallic

Transparency

Opaque