| Reference Type | Journal (article/letter/editorial) |
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| Title | As-Sb Exchange Energies in Tetrahedrite-Tennantite Fahlores and Bournonite-Seligmannite Solid Solutions |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Sack, Richard O. | Author |
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| Ebel, Denton S. | Author |
| Year | 1993 (December) | Volume | 57 |
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| Issue | 389 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_57/57-389-635.pdf+ |
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| DOI | doi:10.1180/minmag.1993.057.389.07Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 1972 | Long-form Identifier | mindat:1:5:1972:3 |
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| GUID | 0 |
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| Full Reference | Sack, Richard O., Ebel, Denton S. (1993) As-Sb Exchange Energies in Tetrahedrite-Tennantite Fahlores and Bournonite-Seligmannite Solid Solutions. Mineralogical Magazine, 57 (389) 635-642 doi:10.1180/minmag.1993.057.389.07 |
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| Plain Text | Sack, Richard O., Ebel, Denton S. (1993) As-Sb Exchange Energies in Tetrahedrite-Tennantite Fahlores and Bournonite-Seligmannite Solid Solutions. Mineralogical Magazine, 57 (389) 635-642 doi:10.1180/minmag.1993.057.389.07 |
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| In | (1993, December) Mineralogical Magazine Vol. 57 (389) Mineralogical Society |
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| Abstract/Notes | AbstractReversed brackets on As and Sb partitioning between tetrahedrite-tennantite fahlores {∼CU10(Fe,Zn)2(Sb,As)4S13} and bournonite-seligmannite solid solutions {CuPb(Sb,As)S3} (400°C evacuated silica tubes, NH4Cl flux) indicate that the maximum nonidealities associated with the As-Sb substitution are about 165 (bournonite) and 250 (fahlore) cal/gfw on a per atom exchange basis. The experimental constraints are consistent with the following calibration of the As-Sb exchange reaction between these phases:where kcal/gfw, X2 = Zn/(Zn + Fe) (or one-half the number of Zn atoms/formula unit) and X3 = As/(As + Sb) refer to atomic ratios in fahlore, and ΔG°23 = ΔH°23 = 2.59 ± 0.14 kcal/gfw (Raabe and Sack, 1984; Sack and Loucks, 1975; O'Leary and Sack, 1987; Sack, 1992). |
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