The process of formation of rare metal-bearing phosphates by hydrothermal alteration.

通过热液蚀变形成含稀有金属的磷酸盐的过程。

• 批准号: 08640615
• 负责人: MATSUBARA Satoshi
• 金额: $ 1.09万
• 依托单位: National Science Museum
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640615/
• 关键词: trolleite; gorceixite; goyazite; crandallite; woodhouseite; phosphate minerals; ヒンスダル石; 鉛ゴム石; フ-アン石; 希土類元素

The studied materials were collected from Yamaguchi Prefecture, Shimane prefecture, Saga Prefecture, and Kagoshima Prefecture. Many phosphate minerals are recognized from the Hinomaru-Nako mine, Abu-cho, Yamaguchi Prefecture. Among them, trolleite, gorceixite and goyazite are firstly found in Japan. They are closely associated and barium and minor strontium are concentrated in gorceixite, only strontium is in goyazite. Though both minerals are isostructural, no complite solidsolution exists between them under the condition of hydrothermal alteration. Gorceixite and goyazite do not include REE in spite of their close association with isostructural florencite- (Ce). REE-bearing crandallite and woodhouseite are found in alunite rock from the alteration rigion around Makurazaki, Kagoshima Prefecture and Ugusu, Shizuoka Prefecture. The sequence of concentration of rare metal and assemblage of anions during the hydrothermal alteration is recognized under the chemical analyzes and observatoin of back-scattered electron images. For example, the assemblage of anions is (PO_4) (PO_4), (PO_4) (SO_4) and (SO_4) (SO_4) in order of stage of formation.

研究材料采集自山口县、岛根县、佐贺县和鹿儿岛县。许多磷酸盐矿物均来自山口县阿布町的日之丸名古矿。其中银镁石、铁镁石、铁镁铝石是日本首次发现的。它们密切伴生，其中钡和少量锶富集在菱铁矿中，只有锶存在于菱沸石中。虽然两种矿物都是同构的，但在热液蚀变条件下它们之间不存在完全固溶体。戈尔塞石和戈钾石不包含稀土元素，尽管它们与同结构的荧光石（Ce）密切相关。鹿儿岛县枕崎和静冈县宇久洲周围蚀变带的明矾石中发现了含稀土的铁辉石和木房石。通过化学分析和背散射电子图像观察，可以识别热液蚀变过程中稀有金属的浓度和阴离子的聚集顺序。例如，阴离子的组合按照形成阶段的顺序为(PO_4)(PO_4)、(PO_4)(SO_4)和(SO_4)(SO_4)。

项目成果

S.Matsubara, F.Matsuyama, K.Kiyota & A.Kato: "Huan gite from Okumanza, Gunma Prefecture, Japan" Mineralogical Jounal. 20-1. 1-8 (1998)

S.松原、F.松山、K.清田

S.Matsubara & F.Matsuyama: "Segnitite from the Tohgane mine, Gifu Prefecture, Japan. (In Japanese)" Journ.Min.Soc.Japan. 26-4. 181-184 (1997)

松原松原

千葉 とき子: "Volcanic rocks from Kasayama,Hagi City,Yamaguchi Prefecture." Mem.Natn.Sci.Mus.Tokyo. 30. 161-165 (1998)

千叶时子：“来自山口县萩市笠山的火山岩。Mem.Natn.Sci.Mus.Tokyo。”30. 161-165 (1998)

宮脇 律郎: "Elyite from the Mizuhiki mine,Fukushima Prefecture,Japan" Bull.Natn.Sci.Mus.Tokyo,Ser.C. 23・1〜2. 27-33 (1997)

Ritsuro Miyawaki：“来自日本福岛县水引矿的Elyite”Bull.Natn.Sci.Mus.Tokyo，Ser.C.23・1～2（1997）。

松原聰: "Ferrierite from Monbetsu,Hokkaido,Japan." Mineralogical Journal. 18・4. 147-153 (1996)

Satoshi Matsubara：“来自日本北海道纹别的镁碱沸石。”18・4（1996）。