ブラウザの設定でJava Scriptの使用を有効にしてご利用ください。
出典:Wiktionary
From Japanese 轟 (todoroki, “boom, rumble; sound of thunder”) + -ite, after Todoroki Mine (轟鉱山) in Shiribeshi, Hokkaido where it was discovered.
todorokite (複数形 todorokites)
出典:Wikipedia
出典:『Wikipedia』 (2010/06/04 06:12 UTC 版)
Todorokite is a rare complex hydrous manganese oxide mineral with formula (Mn,Mg,Ca,Ba,K,Na)2Mn3O12·3H2O. It is a brown to black monoclinic mineral which occurs in massive or tuberose forms. It is quite soft with a Mohs hardness of 1.5, and has a specific gravity of 3.49 - 3.82.
todorokite