Periodic Table · element

Iridium

Ir · Z 77

atomic number

77

atomic mass

192.22

notation

Ir

group

9: Cobalt

period

6

state0c

Solid

state20c

Solid

occurrence

Primordial

density

22.56

melting pt

2447

boiling pt

4428

discovered

1803

abundance

0.001

ore grade

0.05

ore minerals

with platinum, and in osmiridium placers

mined as

By-product

extraction

A trace in platinum-group concentrates, separated at the tail end of the refinery.

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From the All Periodical Elements database in Notion, last edited 2026-08-16. This page is the row, rendered by the build; nothing on it is written by hand.