ORIGIN OF MAGNESITE OCCURENCES IN SÜLEYMANİYE, MİHALLIÇIK, ESKİŞEHİR, TÜRKİYE
Anahtar Kelimeler:
Magnesite, isotope, Süleymaniye, Turkey
In this study, the approaches on the origin of magnesite occurences which are developed related to altered ultramafic
rocks in the peridotites of Tavþanlý Zone have been implemented with isotopic data in addition to geological
and mineralogical data. Cryptocrystalline textured magnesites display two different type of formation as both
individual veins at the fractures and cracks of ultramafic rocks and stockworks. In order to determine carbon
source in magnesite composition and formation of magnesite, C13 and O18 isotope studies have been done.
C13 (PDB) values in magnesite vary between -2.71 and -7.69 ‰. On the other hand, O18 (SMOW) values vary
between 27.35 and 29.43 ‰. These isotopic data indicate that magnesites are formed as mixing of both CO2 from
atmospheric origin of carbon for magnesite occurrences is the result of mixing CO2 from atmospheric origin and
CO2 released during decarbonization of organic rich sediments. Volcanogenic CO2 are also effective in the formation.The
mineralization of Süleymaniye magnesites probably occured after serpentinization of ultramafic rocks
under near surface and low temperature conditions.
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- ISSN: 0026-4563
- Yayın Aralığı: Yılda 3 Sayı
- Başlangıç: 1950
- Yayıncı: Cahit DÖNMEZ