Türkiye Jeoloji Bülteni

Petrographic Properties of the Lignites of Varto, Hınıs, Bulanık, Malazgirt Regions

Abstract: The lignite seams are occured in the Zırnak formation within the Hınıs basin. This unit was depositedin the limnic environment and ranges of Lower Pliocene to Upper Pliocene in age. The typical section of the formationare exposed in the Zırnak Hill. The lignite seams varying with different thiknesses have cut during drillings. The correlation of lignites in the region, having the Zırnak hill lignites as base have been carried out with petrographical properties of the lignites in the petrographical analysis, the lignite seams seem to contain of high amount of iron, clay-silicateminerals as well as exinite macerals but low amount of humunite macerals and it seems that the amount of inertinitemacerals are mostly lower than exinite macerals. During the occurences of the lignites of Zırnak formation, various erosions and related detrital sediment accumulation movements have taken place. For this reason the lignites contain considerably high amount of clay materials and have low calorific values in general.