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Mineralogy of the Permian laterite of Northwestern Iran

Zur Mineralogie permischer Laterite in Nordwest-Iran

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Summary

Laterite horizons of Permian age in NW Iran contain diagenetic and low grade metamorphic minerals. Chloritoid is ubiquitous in the metamorphic mineral assemblages. The chemical compositions of three meta-laterites satisfy the conditions for the formation of chloritoid. The comparison of the metamorphic mineral assemblages with experimental data indicates an equilibration temperature not exceeding 375–400°C.

Zusammenfassung

Permische Laterithorizonte in Nordwest-Iran enthalten diagenetische und schwach metamorphe Minerale. Chloritoid kommt in den metamorphen Mineralparagenesen überall vor Die chemischen Zusammensetzungen dreier Metalaterite erfüllen die Bedingungen für die Bildung von Chloritoid. Der Vergleich der metamorphen Mineralvergesellschaftungen mit experimentellen Daten weist auf eine Gleichgewichtseinstellung bei einer Temperatur von nicht über 375–400°C hin.

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Author notes

  1. D. C. Kamineni

    Present address: Dept. of Geological Sciences, University of Regina, S4S OA2, Regina, Sask, Canada

  2. J. Efthekhar-nezad

    Present address: Geological Survey of Iran, P. O. Box 1964, Teheran, Iran

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    1. D. C. Kamineni
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    2. J. Efthekhar-nezad
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    Kamineni, D.C., Efthekhar-nezad, J. Mineralogy of the Permian laterite of Northwestern Iran. TMPM Tschermaks Petr. Mitt. 24, 195–204 (1977). https://doi.org/10.1007/BF01081127

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    • DOI: https://doi.org/10.1007/BF01081127

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