pyrolusite

英 [,paɪrə(ʊ)'luːsaɪt] 美

pyrolusite (n.): "manganese dioxide," 1828, the name given in Roman times, when it was used, in a heated state, to de-colorize glass, from Greek elements pyro- "by heat, by fire" (see pyro-) + lysis "a loosening" (see lose).

1. The mineral components of nodules are mainly pyrolusite, psilomelane and limonite.: 锰结核主要由硬锰矿、软锰矿、褐铁矿构成.