Two (3-4mm) nuggets of “Osmiridium”, from alluvial workings at Adamsfield, Tasmania, Australia. They contain mostly osmium, with lesser iridium and rutheniridosmine, plus minor ruthenium. Collected in the 1920’s.
1323 Iridium (Var: Osmiridium), Osmium (Var: Iridosmine), Rutheniridosmine, Adamsfield