| Reference Type | Journal (article/letter/editorial) |
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| Title | Optics of hexagonal pyrrhotine (~Fe9S10) |
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| Journal | Mineralogical Magazine and Journal of the Mineralogical Society |
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| Authors | von Gehlen, Kurt | Author |
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| Pillier, Horst | Author |
| Year | 1965 (June) | Volume | 35 |
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| Issue | 270 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_35/35-270-335.pdf+ |
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| DOI | doi:10.1180/minmag.1965.035.270.07Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 5876 | Long-form Identifier | mindat:1:5:5876:0 |
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| GUID | 0 |
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| Full Reference | von Gehlen, Kurt, Pillier, Horst (1965) Optics of hexagonal pyrrhotine (~Fe9S10) Mineralogical Magazine and Journal of the Mineralogical Society, 35 (270) 335-346 doi:10.1180/minmag.1965.035.270.07 |
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| Plain Text | von Gehlen, Kurt, Pillier, Horst (1965) Optics of hexagonal pyrrhotine (~Fe9S10) Mineralogical Magazine and Journal of the Mineralogical Society, 35 (270) 335-346 doi:10.1180/minmag.1965.035.270.07 |
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| In | (1965) Mineralogical Magazine Vol. 35 (270) Mineralogical Society |
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| Abstract/Notes | SummaryReflectivities 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. |
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