Türkiye Jeoloji Bülteni

The Explorative Significance of the Textures in Epithermal Quartz Veins by the Examples from Western Anatolia

Abstract: Quartz veins are a common feature in many of the gold deposits and a major host to gold mineralisation. Various macroscopic textures areobserved in the epithermal quartz veins. According to the quartz textures within the vein, it can be discriminated whether the vein includes goldmineralisation or not. Two major textural groups are recognised: 1) Primary growth textures representing the open-space fillings; 2)Superimposed textures reflecting the overprinting events. Primary quartz vein textures are classified as buck, comb and banded textures.Superimposed textures are breccia and replacement textures. Minerals other than quartz such as adularia and carbonate minerals common inepithermal veins are useful to the interpretation of textural zones. In quartz veins a vertical textural zoning model can be defined according tothe pattern of distribution of textures and assemblages of textures.