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Mineralium Deposita

, Volume 45, Issue 2, pp 201–205 | Cite as

Gem-quality transparent diaspore (zultanite) in bauxite deposits of the İlbir Mountains, Menderes Massif, SW Turkey

  • Murat Hatipoğlu
  • Necdet Türk
  • Steven C. Chamberlain
  • A. Murat Akgün
Note

Abstract

Several m-thick, karst-unconformity-type metabauxite horizons in the İlbir Mountains of SW Turkey host open-space mineralization of gem-quality diaspore (trademarked as zultanite), associated with muscovite, hematite, ilmenite, chloritoid, and younger calcite. The hydrothermal-metamorphogenic mineralization occurs in fracture zones (veins and open structures) that crosscut the metabauxite horizons, but does not extend into the marble host rocks. The white to dark gray marble sequence (over 2,000 m in thickness) is of Cretaceous depositional age and was affected by Alpine (Paleogene) tectonometamorphism which caused the hydrothermal remobilization of primary bauxite components into crosscutting structures.

Keywords

Diaspore Zultanite (gem diaspore) Bauxite Milas-Muğla Turkey 

Notes

Acknowledgment

The authors wish to give great thanks to Dr. Bernd Lehmann for spending many times in revising the manuscript. In addition, his helping to improve the readability of the manuscript is highly appreciated.

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Murat Hatipoğlu
    • 1
  • Necdet Türk
    • 2
  • Steven C. Chamberlain
    • 3
  • A. Murat Akgün
    • 4
  1. 1.Gemmology and Jewelry Program, İzmir Multidisciplinary Vocational School, İMYODokuz Eylül UniversityBucaTurkey
  2. 2.Department of Geological EngineeringDokuz Eylül UniversityBucaTurkey
  3. 3.Center for MineralogyNew York State MuseumAlbanyUSA
  4. 4.Milas Bauxite EstablishmentMilenyum Mining Co.MilasTurkey

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