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Vermikülit mineraloji jeolojik oluşum endüstriyel kullanım ve Türkiye deki durumu
Date
1997-10-17
Author
Toksoy Köksal, Fatma
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Vermikülit genellikle mika mineralleri ve kloritin alterasyonu sonucu oluşan 2:1 tabakalı fıllosilikal mineralidir. Doğada; makroskopik, toprak, otojenik ve metamorfik olmak üzere dört çeşit oluşumu gözlenmiştir. Bu çalışmanın konusunu makroskopik vermikülit oluşturmaktadır. Makroskopik vermikülit trioktahedraldir ve yapısındaki izomorfik iyon değişiminin neden olduğu pozitif yük noksanlığı, tabaka arası yükler ile (genellikle Mg) dengelenir. Tabaka arası yük tipi ve yapısındaki suyun uzaklaşması x-ışınları dıfraktometresinde pik boylarının 14.4-9.0 Â arasında değişmesine neden olur Tabaka arası yükü, su, gliyserol ve etilen glikol ile kolayca çözülür ve değiştirilir. Kimyası aynı olan bir vermikülit 3 boyutlu düzenliden neredeyse düzensize kadar değişen yapısal özelliklere sahip olabilir Makroskopik vermıkülitler. genellikle asidik dayk ve sillerce kesilen ultramafık kayalardaki mafık ve ultramafık minerallerin başkalaşması ile oluşur. Vermikülit oluşumunun hidrotermal mi yoksa süperjin solüsyonlar etkisine mi bağlı olduğu hala tartışılmaktadır. Doğal haldeki vermikülitin endüstriyel kullanımının sınırlı olmasına karşılık işlenmiş vermikülit özellikle ısıl ve yalıtım amaçlı olarak yaygın kullanım alanına sahiptir. Türkiye'de makroskopik vermikülit oluşumu için gerekli koşullar özellikle ofıyolit kuşaklarında büyük çapta gelişmiştir. Bu kuşaklarda detaylı çalışmalar yapılarak bu önemli hammaddenin ülke ekonomisine katkıları araştırılmaktadır
URI
https://hdl.handle.net/11511/72989
https://www.maden.org.tr/resimler/ekler/aee5d5dfa97b251_ek.pdf
Conference Name
2. Endüstriyel Hammaddeler Sempozyumu (16 - 17 Ekim 1997)
Collections
Department of Geological Engineering, Conference / Seminar
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F. Toksoy Köksal, “Vermikülit mineraloji jeolojik oluşum endüstriyel kullanım ve Türkiye deki durumu,” presented at the 2. Endüstriyel Hammaddeler Sempozyumu (16 - 17 Ekim 1997), İzmir, Türkiye, 1997, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72989.