Osmium (from Ancient Greek ὀσμή (osmḗ) 'smell') is a chemical element; it has symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element.

After the Greek for odor, for its pungent and irritating odor when heated in air. The Os analogue of hexaferrum, hexamolybdenum, garutiite, and ruthenium. Redefined 1991 s.p.: Harris and Cabri (1991). As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Cooperite crystal surrounded by Pd-Cu-Pt-S phase (vasilite?), vysotskite and osmium laths (white) in chalcopyrite-bornite matrix (dark). (CanMin 38:1258). Location: Pustaya River placer deposit, situated within the Koryak-Kamchatka platinum-bearing belt of Alaskan-type intrusions in eastern Russia.

Dec 6, 2024 · osmium (Os), chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table and the densest naturally occurring element. A gray-white metal, osmium is very hard, brittle, and difficult to work, even at high temperatures.

Osmium is a Nobel metal and belongs to the platinum family. It is the densest and corrosion-resistant element. It was discovered in 1803. Osmium has an intertwined history with platinum and dates to the late 17 th century.

Element Osmium (Os), Group 8, Atomic Number 76, d-block, Mass 190.23. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

Aug 23, 2013 · Osmium is one of the densest elements in the world. It is a lustrous, bluish white, hard metal and can be brittle even at a high temperature. Within the platinum group, osmium has the highest...