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The chemical composition and optical properties of a basaltic hornblende from Hungary

Published online by Cambridge University Press:  14 March 2018

Miklós Vendl
Miklós Vendl*
Affiliation:
Mineralogy and Geology in the Mining Academy of Sopron, Hungary
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Extract

Although there is an extensive literature on the amphiboles, especially those of the monoclinie series, there appear to be only few records for basaltic hornblendes in which the physical properties and the chemical composition have been determined in detail on the same sample of material, Mention may be made of the later papers by S. L. Penfield and F. C. Stanley, S. Kreutz, W. E. Ford, and H. Küchler.

The basaltic hornblende described in the present paper is found in the volcanic tuff-breceias of Pliocene age in the neighbourhood of Lake Balaton. The locality is near the small village of Balatonesicso on the southern slope of the ‘Fenyves’ hill, the top of which is capped with basalt. Tile hornblende is found as loose crystals in the tuff-breccia and also in blocks rich in olivine. Specimens of some size, up to 2 or 3 cm. in length, may be collected.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 20 , Issue 106 , June 1924 , pp. 237 - 240
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1924

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References

Page 237 note 1 Penfield, S. L. and Stanley, F. C., On the chemical composition of amphibole. Amer. Journ. Sci., 1907, ser. 4, vol. 237 pp. 23–51 CrossRefGoogle Scholar ; translation in Zeits. Kryst. Min., 1937, vol. 48, pp. 233-260.

Page 237 note 2 Kreutz, S., Untersuchung der optischen Eigcnschaften yon Mineralien der Amphibolgruppe und ihrer Abhängigkeit von der chemischen Zusammensetzung. Sitzungsber. Akad. Wiss. Wien, hlath.-naturw. KI., 1908, vol. 117, Abt. 1, pp. 875–970 Google Scholar.

Page 237 note 3 Ford, W. E., A contribution to the optical study of the amphiboles. Amer. Journ. Sci., 1914, ser. 4, vol. 87, pp. 179–193 CrossRefGoogle Scholar ; translation in Zeits. Kryst. Min., 1914, vol. 54, pp. 1-16.

Page 237 note 4 Küchler, H., Chemische and optische Untersuehungen an IIornblenden und Augiten aus dam Diorit-Gabbro-Massiv des oberen Veltlia. Chemie der Erde, 1914, vol. 1, pp. 58–100 Google Scholar. [See also A. N. Winchell, 1921; Min. Abstr., vol. 2, p. 304.]

Page 238 note 1 Rosonbuseh, H., Mikro. Phys. Min., 1905, vol. 1 (2), p. 226 Google Scholar.

Page 238 note 2 Zambonini, F., Osservazioni sulla eomposizione ehimica di aleuni minerali. Atti R. Accad. Set. fis. mat. Napoli, 1916, ser. 2, vol. 16, No. 2, pp. 1–25 Google Scholar; translation in Zeits. Kryst. Min., 1915, vol. 55, pp. 132-155.

Page 239 note 1 Schneider, C., Zur Konntniss basaltischer Hornblenden. Zeits. Kryst. Min., 1891, vol. 18, pp. 579–584 Google Scholar.

Page 240 note 1 Becke, F., Gesteine des Columbretes. Tschermaks Min. Petr. Mitt., 1896, vol. 167 p. 159 Google Scholar.