巻号一覧
36 巻, 6 号
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早川 典久1952 年 36 巻 6 号 p. 169-176
発行日: 1952/12/10
公開日: 2008/03/18
ジャーナル フリーGeology and sulphur deposit in Uguisu-zawa Mine, situated in the northwestern district of Hanamaki, Iwate Prefecture, Northaest Japan, are described and some considerations on the ore genesis are mentioned. This sulphur deposit consists of some layered ore seams intercalated in mud stone which were formed in the depression caldera of small scale relating genetically to the “Kuzumaru Volcano” already reported. This sulphur deposit has been believed to be the “Lake Deposit Type” but it is more reasonable to consider that it belongs to the “Flowed Sulphur Type” from theviewpoint of the structural and textural features of the ore seams.抄録全体を表示PDF形式でダウンロード (624K) -
野沢 保1952 年 36 巻 6 号 p. 176-185
発行日: 1952/12/10
公開日: 2008/03/18
ジャーナル フリーA new locality of chondrodite in Japan is found from a crystalline limestone included in. Inishi syenitic rock, near Kamioka Mine, Gifu Prefacture.
The optical properties, the chemical composition of the chondrodite and the limestones in Inishi syenitic rock are given in the table 1, 2, 3, respectively. They show resemblance to G-chondrodite after H. von Eckermann.
Chondrodite skarn here contains phlogopite, clinochlore, diopside, heden bergite, titanite, garnet, and secondary serpentine which replaced the chondrodite partly. A little quantity of dolomite is found accompanying with the chondrodite, but the limestones near the chondrodite locality is not dolomitic.
One of the conspicuous characters of the chondrodite from Kamioka is the high content of MgO up to 57, 04 in weight percentage, as well as the poverty of FeO 1, 08%. Therefore the ratio MgO: FeO is about 57 which is a remarkably high value compared to the chondrodite from repre sentative localities in the world.
The presence of chondrodite in Inishi syenitic rock and its extremely high ratio MgO; FeO bear some meaning on Hida metamorphism, i. e. the metamorphic differentiation seems to have taken place so completely in Inishi syenitic rock, that the Fe content was expelled out almost entirely from the roek, as well as from the chondrodite and their is formed “basic front” rich in Mg in the course of the granitization of Inishi syentic rock.抄録全体を表示PDF形式でダウンロード (1696K) -
大和 榮次郎, 尾上 孝1952 年 36 巻 6 号 p. 185-186
発行日: 1952/12/10
公開日: 2008/03/18
ジャーナル フリーPDF形式でダウンロード (787K) -
牟田 邦産1952 年 36 巻 6 号 p. 187-202
発行日: 1952/12/10
公開日: 2008/03/18
ジャーナル フリーPDF形式でダウンロード (1948K) -
1952 年 36 巻 6 号 p. e2
発行日: 1952年
公開日: 2008/03/18
ジャーナル フリーPDF形式でダウンロード (68K)
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