troilite
enUKtro·i·lite
T0374750 (trō′ə-līt′, troi′līt′)troilite
(ˈtrəʊɪˌlaɪt)tro•i•lite
(ˈtroʊ əˌlaɪt, ˈtrɔɪ laɪt)n.
单词 | troilite |
释义 | troiliteenUKtro·i·liteT0374750 (trō′ə-līt′, troi′līt′)troilite(ˈtrəʊɪˌlaɪt)tro•i•lite(ˈtroʊ əˌlaɪt, ˈtrɔɪ laɪt)n. TroiliteenUKtroilite[′trȯi‚līt]Troilite(named for the 18th-century Italian scientist D. Troili, who described a meteorite containing the mineral), a mineral Of the sulfide group, FeS. Troilite crystallizes in a hexagonal system, and its crystal structure resembles that of hexagonal pyrrhotite. It forms brownish yellow rounded segregations with a metallic luster; less fre quently it occurs as poorly formed crystals. In cryptocrystalline aggregates it is black. Its hardness on Mohs’ scale is 4, and its density is 4,600–4,840 kg/m3. Troilite is primarily a meteorite mineral; terrestrial troilite is rare, occurring as inclusions in native iron and in copper ores and chromites associated with ultra-basic rocks. |
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