英语词汇“ramsdellite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ramsdellite
释义	ramsdellite /ˈramzdəlʌɪt/ Mineralogy noun A manganese-containing mineral that occurs as grey to black, platy, or finely crystalline masses, and is dimorphous with pyrolusite. Ramsdellite is an oxide of manganese, MnO₂. Crystal system: orthorhombic.. Origin 1940s. From the name of Lewis S. Ramsdell, U.S. mineralogist, who described the mineral in 1932 (Amer. Mineral. 17 143–9) + -ite.
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ramsdellite