thumb|300px|BSE images of PGMs forming polymineralic aggregates - Platarsite and rutheniridosmine
via Wikidata · CC0
thumb|300px|BSE images of PGMs forming polymineralic aggregates - Platarsite and rutheniridosmine
Rutheniridosmine is a naturally occurring mineral alloy of the elements ruthenium, iridium and osmium with the formula of . Rutheniridosmine occurs as hexagonal, opaque, silver-white, metallic grains with a Mohs hardness of six. Platinum, palladium, rhodium, iron, and nickel occur as impurities.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).