The followinguses for iridium are gathered from a number of sources as well as from anecdotal comments. I would be delighted to receive corrections as well as additionalreferenced uses.

• making crucibles and apparatus for use at high temperatures
• electrical contacts
• hardening agent for platinum
• it forms an alloy with osmium used for tipping pens and compass bearings
• Pt/Ir sparkplugs, as used in the MG-F.