Journal of The Gemmological Society of Japan

Online ISSN : 2189-8413
Print ISSN : 0385-5090
ISSN-L : 0385-5090

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Volume 2, Issue 3

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[title in Japanese]

Article type: Cover
1975 Volume 2 Issue 3 Pages Cover1-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_Cover1

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[title in Japanese]

Article type: Index
1975 Volume 2 Issue 3 Pages Toc1-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_Toc1

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[title in Japanese]

Article type: Index
1975 Volume 2 Issue 3 Pages Toc2-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_Toc2

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Biomineralogy and Pearl Culture-3-

Koji Wada

Article type: Article
1975 Volume 2 Issue 3 Pages 99-104
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_99

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The Japanese fishermen cultivating pearls along the seacoasts of Japan have been confronting in recent years by several severe difficulties, such as a considerable decrease in the production of high quality pearls. The decrease is supposed to be caused by desolation of pearl farms, the remarkable increase of mortality of mother pearl oysters, careless cultivation management and water pollution. The improvement of pearl cultivation techniques in future is discussed from the viewpoint of biomineralogy in this report.

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On the Refractive and Reflective Indices in Identifying a Gemstone

Takeichi Tatsumi

Article type: Article
1975 Volume 2 Issue 3 Pages 105-109
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_105

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In identifying a gemstone, the refractive index of the stone is one of the important characters. When the refractive index is in the range over the ordinary refractometer, we have to identify the stone by other characters. Since the refractive index is theoretically a function of reflective index, an instrument is designed to measure high refractive index using the value of reflectivity. Measurements on several gemstones with higher refractive index by this instrument showed that we could identify them, provided that stones have the refractive index over 1.81. This instrument will be useful for identifying high refractive gemstones.

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Basic Knowledge on Studies of Fluid Inclusions Minerals-3- : Salinity of Fluid Inclusions and Properties of Hydrothermal Solutions.

Sukune TAKENOUCHI

Article type: Article
1975 Volume 2 Issue 3 Pages 110-121
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_110

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The principle, technical procedure and design of the freezing-stage method in the fluid inclusion studies is introduced. The relation between the concentration of salts and the melting point of ice in saline solutions is reviewed. The formation of liquid CO_2 and CO_2 hydrate in cooled CO_2-bearing fluid inclusions is also discussed briefly. Concerning with the composition of fluid inclusions, the pressure-specific volume-temperature and pressure-composition-temperature relations of binary systems of H_2O-NaCl and H_2O-CO_2 in hydrothermal conditions are reviewed.

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[title in Japanese]

[in Japanese]

Article type: Article
1975 Volume 2 Issue 3 Pages 122-124
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_122

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[title in Japanese]

[in Japanese]

Article type: Article
1975 Volume 2 Issue 3 Pages 124-125
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_124

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[title in Japanese]

[in Japanese]

Article type: Article
1975 Volume 2 Issue 3 Pages 125-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_125

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Abstracts

Article type: Bibliography
1975 Volume 2 Issue 3 Pages 126-137
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_126

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Encyclopedia of Minerals, Roberts, W, L., Rapp Jr., G.R.and Weber, J.xxv+693pp, 128pp, Van Nostrand Reinhold Co., New York, Toronto and London, 1974, ￡31.60

[in Japanese]

Article type: Article
1975 Volume 2 Issue 3 Pages 138-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_138_1

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Betgkristall, Form und Schonheit alpiner Quarze : Rudolf Rykart, 228pp, 198, Ott Velag Thun unt Munchen, Basel, 1971, DM32

[in Japanese]

Article type: Article
1975 Volume 2 Issue 3 Pages 138-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_138_2

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[title in Japanese]

[in Japanese]

Article type: Article
1975 Volume 2 Issue 3 Pages 139-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_139_1

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The Wakabayashi Mineral Collection : R.Sadanaga and M.Bunno, 177pp., 16pp, 131, The University Museum, The Unibersity of Tokyo, University of Tokyo Press, 1974, 7, 000

[in Japanese]

Article type: Article
1975 Volume 2 Issue 3 Pages 139-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_139_2

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[title in Japanese]

Article type: Appendix
1975 Volume 2 Issue 3 Pages 140-143
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_140

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[title in Japanese]

Article type: Appendix
1975 Volume 2 Issue 3 Pages 144-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_144

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[title in Japanese]

Article type: Cover
1975 Volume 2 Issue 3 Pages Cover2-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_Cover2

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[title in Japanese]

Article type: Cover
1975 Volume 2 Issue 3 Pages Cover3-
Published: September 15, 1975
Released on J-STAGE: January 16, 2017

DOIhttps://doi.org/10.14915/gsjapan.2.3_Cover3

JOURNAL FREE ACCESS

Download PDF (346K)

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