Ni-Lateritlerin Oluşumu ve Özellikleri

Erem Abdullah Tufan

Öz


Ni-lateritler çoğunlukla dunit, peridotit, serpantinit gibi olivin-içeren ultramafik kayaçlardan şekillenen ve ekonomik olarak işletilebilir Ni-Co rezervleri içeren oluşumlardır. Nikel birincil olarak %0.16-0.40 Ni içeren forsteritik olivinden kaynaklanmaktadır. Mineraloji temelinde, Ni-lateritler Tip A (sulu Mg-silikat yatakları), Tip B (kil simektit yatakları), Tip C (oksit yatakları) şeklinde 3 ana tip içerisinde incelenebilmektedir. Batı Anadolu’daki Ni-laterit yatakları (örn: Çaldağ, Gördes, Muratdağı vd.) ultramafik kayaçların tropikal iklim alanlarında bozuşmasının yaygın birer ürünüdürler. Derleme niteleğindeki bu çalışmada, dünya genelinde gözlenen Ni-lateritlerin yayılımları, tipleri ve oluşum koşulları irdelenmiştir.


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