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Scorodite from Kiura mine, Japan1

Published online by Cambridge University Press:  14 March 2018

T. Ito  and
T. Shiga
T. Ito
Affiliation:
Mineralogical Institute, Tokyo Imperial University
T. Shiga
Affiliation:
Mineralogical Institute, Tokyo Imperial University
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Extract

Scorodite from Kiura mine, Bungo, Japan, has been known for many years. However, owing to its diversity in crystallographical and optical properties as well as chemical composition from those of other localities there appears to be some doubts as to the identity of the mineral. It has even been suggested to be possibly a new mineral having a composition akin to that of scorodite. Some time ago a number of fine crystals were placed at our disposal by the courtesy of Dr. Kô, in addition to the recent acquisition by our Institute of a few rarely found beautiful druses of the mineral. It will therefore be worth while to describe some of its main features in detail.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 23 , Issue 137 , June 1932 , pp. 130 - 136
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1932

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Footnotes

1

See Journ. Geol. Soc. Tokyo 1931, vol. 38, p. 309 [an abstract in Japanese].

References

page 130 note 2 Sasamoto, J., Journ. Geol. Soc. Tokyo, 1898, vol. 5, p. 31 Google Scholar [in Japanese]. K. Yamada, ibid., p. 302 [in Japanese]. S. K5, ibid., 1903, vol. 10, p. 573 [in Japanese].

page 130 note 3 Wada, T., Minerals of Japan, 1916, p. 321 Google Scholar [in Japanese]. Fukuchi, N., Journ. Geol. Soc. Tokyo, 1916, vol. 23, p. 137 Google Scholar [in Japanese

page 131 note 1 Ito, T., Zeits. Krist., 1929, col. 71, p. 536 Google Scholar. [Min. Abstr., col. 4, p. 299.]

page 135 note 1 Larsen, E. S., The microscopic determination of the nonopaque minerals. Bull. U.S. Geol. Survey, 1921, no. 679, p. 132.Google Scholar

page 136 note 1 Foshag, W. F., Berman, H., and Doggett, R. A., Amer. Min., 1930, vol. 15, p. 390.Google Scholar [M.A. 5-43.]

Prof. T. Ito has generously presented to the British Museum collection oi minerals four of the scorodite crystals from Japan that he here describes. These show a sub-parallel grouping of sub-individuals, and it is possible that some of the vicinal faces noted by him may really be due to this imperfection of the crystals.—L. J. S.