巻号一覧
39 巻, 6 号
選択された号の論文の6件中1～6を表示しています
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兼松 四郎1955 年 39 巻 6 号 p. 223-232
発行日: 1955/12/01
公開日: 2008/03/18
ジャーナル フリーThe Kobiwako bed, Shiga Prefecture is exposed in the southern and western parts of the Lake Biwa, and mainly consisted of the weathering soils of clay-slate, shale, sandstone and biotite-granite and many fossils are contained in it.
The results obtained from X-ray, differential thermal analysis and chemical analysis, on the caly mineral composition in each bed - from the surface of the earth to the bottom bed - are concluded as follows:
1. The clay minerals mianly composed of halloysite and hydrated halloysite mixed with illite and montmorillonite in small amount.
2. The illite is generally suggested in the granite bearing bed.
3. The soils of each bed are acidic in pH and it is favourable circumstances to form the kaolin group mineral.抄録全体を表示PDF形式でダウンロード (561K) -
浅井 宏1955 年 39 巻 6 号 p. 233-241
発行日: 1955/12/01
公開日: 2008/03/18
ジャーナル フリーThe basic and the ultrabasic igneous rocks intrude between the phyllite of the outer metamorphic zone of the median tectonic line and the non-metamorphic sedimentary rocks.
The succesions of the igneous activities are following,
metadiabase and metamicrogabbro,
metagabbro,
metagabbropegmatite,
albitite,
schistose-gabbro,
relict olivine pyroxene serpentinite,
serpentinite,
diabase.
These rocks are formed at the stage of the tectonic movement in this districts.抄録全体を表示PDF形式でダウンロード (594K) -
白水 晴雄, 宏渡 文利1955 年 39 巻 6 号 p. 241-248
発行日: 1955/12/01
公開日: 2008/03/18
ジャーナル フリーBementite, a manganese member of the serpentine series, has been found from the manganese deposits of the Tokuzawa mine in the Palaeozoic formation. The mineral occurs as veinlets of very finegrained aggregates traversing the tephroite ores. Color light-brown. Sp. Gr.=2.80. n1=1.62, n2=1.65. X-ray powder pattern agrees generally with the previous data by Smitheringale (1929), and indicates also that the mineral has the similar structure to “monoclinic kaolin-type chamosite” described by Brindley. Cell dimensions: a=b/√3=5.65 Å, b=9.78, c=7.50, β=104.5° Empirical cell content is (Ca0•14 Mg0•29 Mn2+4•55 Mn3+0•26 Fe2+0•14 Fe3+0•01) (Si3•53 Al0•35) O9•92 (OH)6.38 0.86 H2O. X-ray powder patterns of some specimens from other localities suggest that polymorphism exists within bementites.抄録全体を表示PDF形式でダウンロード (439K) -
郷原 範造1955 年 39 巻 6 号 p. 248-253
発行日: 1955/12/01
公開日: 2008/03/18
ジャーナル フリー大倉鉱山の鉱床は正岩漿～深,中熱水性鉱床であるが,蒼鉛鉱物は2, 3
の鉱床にのみ認められ,輝蒼鉛鉱,自然蒼鉛,硫蒼鉛銅鉱の三者が共生するのは第7鉱床3号坑のみである。
第7鉱床3号坑鉱体は磁硫鉄鉱を主とし,少量の黄銅鉱,閃亜鉛鉱,方鉛鉱を含む。超塩基性岩と千枚岩質粘板岩の境界に発達する石英脈で,蒼鉛鉱物は鉱体の上盤側の一部に濃集して産出する。
蒼鉛鉱物の生成順序は,自然蒼鉛-輝蒼鉛鉱-硫蒼鉛銅鉱とみることができ,硫蒼鉛銅鉱は黄銅鉱と自然蒼鉛の境界に産し,両者の反応によつて生成したもので,最もウイチエン鉱(wittichenite)に類似する。
反応縁生成物は足尾鉱山産硫蒼鉛銅鉱にも類似し,竹内常彦,南部松夫1)が示した輝蒼鉛鉱の反応縁生成がさらに進捗すれば硫蒼鉛銅鉱も生成可能と考えられる。抄録全体を表示PDF形式でダウンロード (1191K) -
山本 博達1955 年 39 巻 6 号 p. 253-261
発行日: 1955/12/01
公開日: 2008/03/18
ジャーナル フリーKinds of leucocratic veins can be seen in the Higo gneiss body, intruded by the Miyanohara granite.
They have three types in field-occurrence, that is, i) Subparallel type, ii) Clean-cut type, iii) Lens-like type.
By means of the Gorai's twin method, etc, it is considered that they ate not the derivatives from the Miyanohara Granite, but are the metamorphic-differentiation-products from the Higo gneiss, partly accompanied with rheomorphic phenomena.抄録全体を表示PDF形式でダウンロード (1120K) -
本邦磁硫鐵鑛鑛床の研究IV武中 俊三1955 年 39 巻 6 号 p. 261-266
発行日: 1955/12/01
公開日: 2008/03/18
ジャーナル フリーMinor elements of pyrrhotite from the Chichibu mine, Saitama Pref., the Kawayama mine, Yamaguchi Pref. and the Yanahara mine, Okayama Pref., was determined by spectrographic methods.
The results of the qualitative analysis was given and discussed, and the conclusion is reached as that these results differ somewhat from those which mentioned in previous report and it is difficult to expect qualitative difference in trace elements to reflect temperature of ore deposition.抄録全体を表示PDF形式でダウンロード (782K)
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