| Reference Type | Journal (article/letter/editorial) |
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| Title | Ore genesis at La Colorada Ag-Zn-Pb deposit in Zacatecas, Mexico |
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| Journal | Mineralogical Magazine |
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| Authors | Chutas, N. I. | Author |
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| Sack, R. O. | Author |
| Year | 2004 (December) | Volume | 68 |
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| Issue | 6 |
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| Publisher | Mineralogical Society |
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| DOI | doi:10.1180/0026461046860231Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 243587 | Long-form Identifier | mindat:1:5:243587:3 |
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| GUID | 0 |
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| Full Reference | Chutas, N. I., Sack, R. O. (2004) Ore genesis at La Colorada Ag-Zn-Pb deposit in Zacatecas, Mexico. Mineralogical Magazine, 68 (6) 923-937 doi:10.1180/0026461046860231 |
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| Plain Text | Chutas, N. I., Sack, R. O. (2004) Ore genesis at La Colorada Ag-Zn-Pb deposit in Zacatecas, Mexico. Mineralogical Magazine, 68 (6) 923-937 doi:10.1180/0026461046860231 |
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| Abstract/Notes | AbstractLa Colorada, in Zacatecas State, Mexico is an epithermal Ag-Zn-Pb system hosted in Mesozoic calcareous sedimentary rocks overlain by Tertiary volcanic rocks. The dominant vein is associated with a fault system that accommodates Tertiary normal and strike-slip faulting. The ore consists of fahlore [(Cu,Ag)10(Zn,Fe)2(Sb,As)4S13], polybasite [(Ag,Cu)16Sb2S11]āpearceite [(Ag,Cu)16As2S11] solid solution, pyrargyrite [Ag3SbS3]āproustite [Ag3AsS3] solid solution, acanthite-argentite [Ag2S], and native silver; associated sulphides include galena, sphalerite, chalcopyrite and pyrite. The Ag:Sb of the bulk concentrate from the mine is 1.076 and the Ag:Pb is 0.088. Compositions of the assemblages fahlore + pyrargyrite-proustite + sphalerite, and fahlore + polybasite-pearceite solid solution + (Ag,Cu)2S solid solution + sphalerite encapsulated in quartz and sphalerite indicate a primary depositional temperature of ā¼325Ā°C for a depth between 725 and 960 m below the inferred palaeosurface, which is in accord with fluid-inclusion data for higher elevations in the mine. |
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