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Volume 41, Issue 1
Displaying 1-7 of 7 articles from this issue
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Keiichi Omori, Shuzo Hasegawa1957 Volume 41 Issue 1 Pages 1-9
Published: February 01, 1957
Released on J-STAGE: August 07, 2008
JOURNAL FREE ACCESSFergusonite, allanite, thorogummite and zircon have been found from the pegmatite at Hayamadake, Tamura Gun, Fukushima Prefecture, in where they occurred with lepidomelane and microcline perthite. In this paper, their occurrences, some mineralogical notes and chemical compositions are described. Since there were little informations of the pegmatites in this district, it is interest that such minerals have occurred.View full abstractDownload PDF (830K) -
(Hydrocarbons in the lagoon sediments from the Hachiro-gata in Akita Prefecture (1) )Iwao Kato, Ikuro Shimada1957 Volume 41 Issue 1 Pages 9-15
Published: 1957
Released on J-STAGE: August 07, 2008
JOURNAL FREE ACCESSDownload PDF (404K) -
Kunihiko Muta1957 Volume 41 Issue 1 Pages 16-23
Published: February 01, 1957
Released on J-STAGE: August 07, 2008
JOURNAL FREE ACCESSSome carbonate minerals associated with ore deposits, may be introduced into the vein in the form of “ore solution”, while the others are gathered from the country rocks themselves through hydrothermal alteration as seggregation veins.
Tais paper deals with the general modes of occurrence and chemical composition of the various carbonate minerals associated with ore deposits in Kyushu, and from these data, the origin and genesis of them are discussed here.View full abstractDownload PDF (956K) -
Yotaro Seki1957 Volume 41 Issue 1 Pages 23-26
Published: February 01, 1957
Released on J-STAGE: August 07, 2008
JOURNAL FREE ACCESSThe mineral common hornblende was separated from clinopyroxene-hornblendite in the ultramafic mass of the Miyamori district, northeastern Japan. The common hornblende, which crystallized after the formation of associating clinopyroxene (Wo44En27Fs29 in molecular %) in magmatic condition, shows the following optical, physical and chemical characters:
α=1.652 X: pale yellow
β=1.669 γ-α=0.027 Y: dark brown
γ=1.679 Z: dark brown
(-)2V=78°(calculated), =80°_??_81.5°(observed)
c∧Z=20.1°
D=3.17
(Ca1.978 Na0.438 K0.019)2.435 (Al0.387 Fe'''0.392 Fe''1.565 Mg2.548 Mn0.083)5.087 (Si6. ?? 31 Al1.669)8.000 O21.909 (OH)2.091
The X-ray powder diffraction data of the mineral is given in Table 3.View full abstractDownload PDF (183K) -
Fumio Kuramochi, Sadao Watanabe1957 Volume 41 Issue 1 Pages 27-32
Published: February 01, 1957
Released on J-STAGE: August 07, 2008
JOURNAL FREE ACCESSThe writers examined the quartz-diorite occurred at the Mt. Mito, and they are considering it for the heat source of the Tsurunoyu hot springs. The results are as follows.
(1) The quartz-diorite occurred three stocks on a small scale. (2) These stocks have nearly same rock minerals and textures, and may be intrusived about same stage. (3) The rock is the medium grain and holocrystalline, and its marginal parts are the fine grained rocks. (4) The Itsukaichi-Kawakami tectonic line cannot be found in this region. (5) The bed rocks about the Mt. Mito consist of sandstone with thin slate layers.View full abstractDownload PDF (3323K) -
Kotoyo Takano1957 Volume 41 Issue 1 Pages 32-39
Published: February 01, 1957
Released on J-STAGE: August 07, 2008
JOURNAL FREE ACCESSFerberite-wolframite-hubnerite series are studied using the X-ray diffractometer, the spectrochemical apparatus and the chemical analytic method. Specimens are collected from Takatori-mine, Ebisumine and Togane-mine in Japan, and from Korea. Data from these samples are compared with that of Bloch and A. S. T. M. cards, which are similarly calculated for lattice constants. The results are shown in Table 2 and Fig. 1. It should be suggested that the expansion of cell dimensions near hubnerite is caused by the substitution of the larger Mn+2 ions instead of the smaller Fe+2 ions. As shown in Fig. 1, it is ensured the expansion in these series are not only characterized in the value of a0, but also shown in that of b0 and c0, which are not so largely as the former.
Additionaly, the goniometrical data on wolframite from Ebisu-mine are shown in Table 3 and Fig. 2, in which several new faces of the mineral in Japan are also reported.View full abstractDownload PDF (403K) -
Kozo Sugiura, Shoji Terada1957 Volume 41 Issue 1 Pages 39-42
Published: February 01, 1957
Released on J-STAGE: August 07, 2008
JOURNAL FREE ACCESSDownload PDF (235K)
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