<紀要論文>
A new vanadium garnet, (Mn, Ca)_3V_2Si_3O_ <12>, from the Yamato mine, Amami Islands, Japan

作成者
本文言語
出版者
発行日
収録物名
開始ページ
終了ページ
出版タイプ
アクセス権
Crossref DOI
概要 A vanadium garnet has been found from a manganese ore deposit of the Yamato mine in the Palaeozoic formation of Amami Ōshima Island. The garnet forms dull greenish aggregates impregnated in the rhodon...ite ore and associates with some rare minerals, such as roscoelite and “haradaite.” The garnet is yellowish green in thin section, usually isotropic. Refractive index, 1.855±0.005. Specific gravity, 3.91 at 18℃. Cell dimension, a_0=11.9743Å. Chemical composition: SiO_2 35.76, TiO_2 0.11, Al_2O_3 1.96, Fe_2O_3 1.13, V_2O_3 24.90, FeO tr., MnO 15.92, MgO 0.08, CaO 19.28, Na_2O 0.25, K_2O 0.04, H_2O^+ 0.54, H_2O^- 0.10, total 100.07 wt. %. Chemical formula is (Ca_<1.79>Mn_<1.17>Mg_<0.01>Na_<0.04>)_<3.01>(V'''_<1.72>Al'''_<0.02>Fe'''_<0.07>Ti_<0.01>)_<2.00>Si_<3.00>O_<12.00>. The Yamato garnet is composed of two kinds of garnet molecule Mn_3V_2Si_3O_<12> and Ca_3V_2Si_3O_<12>. It reveals the existence of a new manganese-calcium series in vanadium garnet group.続きを見る

本文ファイル

pdf 15_01_p073 pdf 2.45 MB 251  

詳細

PISSN
NCID
レコードID
査読有無
登録日 2015.10.23
更新日 2021.02.18

この資料を見た人はこんな資料も見ています