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iridosmine 銥鋨合金; 銥鋨礦 銥鋨合金; 銥鋨礦 iridosmine n 1: a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum); used in needles and pen nibs etc. [synonym: {osmiridium}, {iridosmine}] Iridosmine \Ir`i*dos"mine\, Iridosmium \Ir`i*dos"mi*um\, n.
[Iridium osmium.] (Min.) The native compound of iridium and osmium. It is found in flattened metallic grains of extreme hardness, and is often used for pointing gold pens. [1913 Webster]
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