| Reference Type | Journal (article/letter/editorial) |
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| Title | Onoratoite, a new antimony oxychloride, from Cetine di Cotorniano, Rosia (Siena, Italy) |
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| Journal | Mineralogical Magazine and Journal of the Mineralogical Society |
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| Authors | Belluomini, G. | Author |
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| Fornaseri, M. | Author |
| Nicoletti, M. | Author |
| Year | 1968 (December) | Volume | 36 |
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| Issue | 284 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_36/36-284-1037.pdf+ |
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| DOI | doi:10.1180/minmag.1968.036.284.01Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 6201 | Long-form Identifier | mindat:1:5:6201:9 |
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| GUID | 0 |
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| Full Reference | Belluomini, G., Fornaseri, M., Nicoletti, M. (1968) Onoratoite, a new antimony oxychloride, from Cetine di Cotorniano, Rosia (Siena, Italy) Mineralogical Magazine and Journal of the Mineralogical Society, 36 (284) 1037-1044 doi:10.1180/minmag.1968.036.284.01 |
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| Plain Text | Belluomini, G., Fornaseri, M., Nicoletti, M. (1968) Onoratoite, a new antimony oxychloride, from Cetine di Cotorniano, Rosia (Siena, Italy) Mineralogical Magazine and Journal of the Mineralogical Society, 36 (284) 1037-1044 doi:10.1180/minmag.1968.036.284.01 |
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| In | (1966) Mineralogical Magazine Vol. 36 (284) Mineralogical Society |
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| Abstract/Notes | SummaryOnoratoite, a new antimony oxychloride Sb8O11Cl2 from the antimony mines of Cetine di Cotorniano, Rosia (Siena, Italy), is triclinic with lattice constants a 18·92, b 4·03, c 10·31 Å, α ≃ γ ≃ 90°, β 110°. Density 5·3 meas., 5·49 calc. The needle-like crystals are elongated on [010] and show as prominent form {001}. Other forms present are {100}, {201}, {401}, {412}.The new mineral is optically biaxial negative, extinction angle small and variable from 0° to 14°. Orientation β:[100] ca. 8°; α:[001] ca. 12°; γ:[010] 0 to 14°. Refractive indices are 2·26 > γ > 2·23, 2·23 > β > 2·18. Birefringence γ-β 0·024 (meas.).The stability field of onoratoite has been investigated by systematic thermo-gravimetric and differential thermal analysis of antimony oxychlorides and by a direct study of equilibrium relationships in the system SbCl3-Sb2O3-HCl-H2O. The probable mechanism of formation of onoratoite is discussed.Onoratoite is named in honour of the Italian mineralogist Ettore Onorato. |
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