Journal of the Mining Institute of Japan
Online ISSN : 2185-6729
Print ISSN : 0369-4194
ISSN-L : 0369-4194
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Volume 53, Issue 628
Displaying 1-4 of 4 articles from this issue
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  • ELECTROLYTIC METHOD OF ORE PROSPECTING
    Atusi MATUBARA
    1937 Volume 53 Issue 628 Pages 515-528
    Published: August 22, 1937
    Released on J-STAGE: July 13, 2011
    DOIhttps://doi.org/10.11508/shigentosozai1885.53.515
    JOURNAL FREE ACCESS
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    Prospecting of underground are body may be accomplished by measuring the reversepotential which is produced by the searched are body when the latter is electrolytically polarised. Two varieties of receiving method are proposed in the present paper. The one is a direct method while the other is an indirect one.
    At the ground where the capillary potential around the transmitting electrode is not conspicious, the direct method is applicable. In general, however, the indirect method is superior to the direct one as the capillary potential may sometimes amount to a considerable magnitude and masks the reverse potential from the are body. Moreover, the indirect method gives some precise informations not only about the position but also of the depth of the searched are body.
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  • EFFECT OF COMPOSITE VEIN ON THE DISTURBANCE OF SURFACE FIELD
    Yoshizo FUJITA
    1937 Volume 53 Issue 628 Pages 529-541
    Published: August 22, 1937
    Released on J-STAGE: July 13, 2011
    DOIhttps://doi.org/10.11508/shigentosozai1885.53.529
    JOURNAL FREE ACCESS
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    The result of investigation on the disturbance of liquid surface field by singlyoccurring vein of various forms in the current-sending potential prospecting method had been reported in detail in Vol.48, No.564 (1922) of this journal. This report discusses the disturbance of the liquid surface field from the examination of curves obtained by tracing the equi-potential lines when the composite vein exists in various forms.
    To begin with, the author explains the method of indicating the position of veins and the disturbance of field in order to facilitateunderstanding the state of occurrence of veins and treating the result of investigation. He studied the effect of reciprocal positions of veins on the liquid surface field (1) when 2 parallel veins, having the equal dimensions and the submerged depths, exist and (2) when 2 parallel veins, having the unequal dimensions and submerged depths, and 3 parallel veins exist. He also studied (3) the effect of rich ore-body, thinning of veins and fault on the disturbance of field and theappropriate position for setting electrodes in order to locate the rich ore-body. The author gives the result of investigation carried out with a purpose to minimize the effect of fault on the field disturbance and to raise the effect of vein, which is bisected by the fault, as great and clear as possible in order to facilitate prospecting of ore-body.
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  • A METHOD OF REFINING OF IMPURE ALUMINIUM
    Itizi OBINATA
    1937 Volume 53 Issue 628 Pages 542-551
    Published: August 22, 1937
    Released on J-STAGE: July 13, 2011
    DOIhttps://doi.org/10.11508/shigentosozai1885.53.542
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    A new refining method, which depends chiefly upon the partial melting of impure aluminium, has been introduced: The rate of segregation of the primary crystals of impurities, Fe Al3 in particular, in the eutectic mother-liquor, is accelerated by means of magnetic or centrifugal forces.
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  • [title in Japanese]
    1937 Volume 53 Issue 628 Pages 552-560
    Published: August 22, 1937
    Released on J-STAGE: July 13, 2011
    DOIhttps://doi.org/10.11508/shigentosozai1885.53.552
    JOURNAL FREE ACCESS
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