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
Jakobsberg, Sweden, and -ite.
jacobsite (複数形 jacobsites)
出典:Wikipedia
出典:『Wikipedia』 (2011/01/28 04:21 UTC 版)
Jacobsite is a manganese iron oxide mineral. It is in the spinel group and forms a solid solution series with magnetite. The chemical formula is MnFe2O4 or with oxidation states and substitutions: (Mn2+,Fe2+,Mg)(Fe3+,Mn3+)2O4.
jacobsite