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Optics of hexagonal pyrrhotine (~Fe9S10)

Published online by Cambridge University Press:  14 March 2018

Kurt von Gehlen  and
Horst Pillier
Kurt von Gehlen
Affiliation:
Mineralogisches Institut, University of Erlangen-Nürnberg, Erlangen, Germany
Horst Pillier
Affiliation:
Laboratory of Microscopy, Firma Carl Zeiss, 0berkochen, Germany
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Summary

Reflectivities of a series of oriented polished sections through a single crystal of pyrrhotine (Fe1−αS) from Trepča, Yugoslavia, were measured by means of a spectral photometer attached to a microscope. This pyrrhotine consists of two phases, namely intermediate pyrrhotine (∼ Fe9S10) and monoclinic pyrrhotine (∼ Fe7S8), which were probably formed by exsolution. The phase relations of pyrrhotine at low temperatures are discussed. Optical data are given for the intermediate pyrrhotine from 440 to 660 mµ. From the reflectivities measured in air and oil against a carborundum standard, values of n, k, and κ were calculated for ω and ε and represented in dispersion curves. Also, sections through the various ‘indicating surfaces’ at 546 mµ are shown. The accuracy of the values, which should be approximately the same for other pyrrhotine phases, is discussed.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 35 , Issue 270 , June 1965 , pp. 335 - 346
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1965

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References

Arnold, (R. G.), 1962. Econ. Geol., vol. 57, p. 72.Google Scholar
Arnold, (R. G.) and Reichen, (L. E.), 1962. Amer. Min., vol. 47, p. 105.Google Scholar
Berek, (M.), 1953. In RINNE-BEREK, Anleitung zu optischen Untersuchungen mit dem Polarisationsmikroskop. 2nd edn, Stuttgart (Sehweizerbart), p. 331.CrossRefGoogle Scholar
Bowie, (S. H. U.), 1962. Econ. Geol., vol. 57, p. 983.Google Scholar
Bowie, (S. H. U.) and Henry, (N. F. M.), 1964. Trans. Inst. Mining Met., vol. 73, p. 467.Google Scholar
Buseck, (P. R.), 1962. Carnegie Inst. Washington Year Book, vol. 61, p. 161.Google Scholar
Byström, (A.), 1945. Arkiv Kemi, Min. Geol., vol. 19 B, no. 8, p. 1.Google Scholar
Cambon, (Th.), 1947. Contribution á l'emploi des méthodes optiques en métallographie microscopique. Thesis, University of Toulouse, p. 68.Google Scholar
Clark, (A. H.), 1964. Studies on the mineralogy and geochemistry of the Ylöjärvi copper deposit, south-west Finland. Unpublished Ph.D. thesis, University of Manchester.Google Scholar
Ehrenberg, (H.), 1964. Zeits. wiss. Mikroskopie, vol. 66, p. 32.Google Scholar
[ELISEEV, (E. N.)] [Vestnik Leningrad Univ., Ser. geol. geogr.], no. 6, p. 16.Google Scholar
Gehlen, (K. V.), 1960. Beitr. Min. Petr., vol. 7, p. 340.Google Scholar
Gehlen, (K. V.), 1963. Carnegie Inst. Washington Year Book, vol. 62, p. 213.Google Scholar
Gehlen, (K. V.) and Piller, (H.), 1964. Beitr. Min. Petr., vol. 10, p. 94.Google Scholar
Gronvold, (F.) and HARALDSEN( H.), 1952. Acta Chem. Scand., vol. 6, p. 1452.Google Scholar
Haraldsen, (H.), 1941. Zeits. anorg. Chem., vol. 231, pp. 169. 195.CrossRefGoogle Scholar
Harrison, (R. K.) and Day, (G.), 1963. Min. Mag., vol. 33, p. 517.Google Scholar
Hihara, (T.), 1960. Journ. Sei. Hiroshima Univ., vol. 24 A, p. 31.Google Scholar
Kouvo, (O.) and Vuorelainen, (Y.), 1962. Geologi, no. 6, p. 79.Google Scholar
Kullerud, (G.), 1953. Norsk geol. Tidsskr., vol. 32, p. 61.Google Scholar
Kullerud, (G.), Doe, (A. R.), Buseck, (P. R.), and Tröften, (P. F.), 1963. Carnegie Inst. Washington Year Book, vol. 62, p. 210.Google Scholar
Nomarski, (G.) and WEILL (A. 1%.), 1954. Bull. Soc. franç. Min. Crist., vol. 77, p. 840.Google Scholar
Pehrman, (G.), 1954. Acta Acad. Aboensis, Math. Phys., vol. 19, no. 10.Google Scholar
Piller, (H.), 1965. In preparation.Google Scholar
Piller, (H.) and Gehlen, (K. V.), 1964. Amer. Min., vol. 49, p. 867.Google Scholar
Ramdohr, (P.), 1960. Die Erzmineralien und ihre Verwachsungen. 3rd edn, Akademie-Verlag, Berlin.Google Scholar
Ramdohr, (P.), 1964. Econ. Geol., vol. 59, p. 502.Google Scholar
Rehwald, (G.), 1952. Fortschr. Min., vol. 31, p. 17.Google Scholar
Schumacher, (F.), 1950. Die Lagerstitte der Trepca und ihre Umgebung. Beograd.Google Scholar
Thibault, (N. W.), 1944. Amer. Min., vol. 29, p. 327.Google Scholar
Weigel, (O.), 1915. Nachr. kgl. Ges. Wiss. Gottingen, Math.-Phys., p. 264.Google Scholar