THE GEOLOGY OF THE SIVAS-DIVRIĞI-TAŞLITEPE IRON PLACER AND ITS MINING

Abstract

Taşlıtepe iron ore plaser occurrences was deposited during the Pliocene time which is the oldest placer than the other ones at the region. It displays fairly well belonging to colluvial fan deposition features. Fragmenial ore material that has moved down from mountainside by the influence of gravity will lend to accumulate at the foot of the slope. The basement rocks consist of crystalized limestones Mesozoic age, serpantinized ultrabasics Upper Cretaceous age, siyenite-monzonite plutons Paleogene age and conglomerale-mudstone Miogcne age. Taşlıtepe iron placer overlains these basement rocks with angulary unconformity and it is overlain by the river deposits with unconformably. But placer was faced with these river deposits by oblique strike slipe faulting events of plio Quaternary age. These river deposits arc exposed at the high position as a 400 m. from the actually river level as a result of quickly uplift of the region recently. Sedimentologicial, structural and morphologicial datas of the placers indicate that placer materials has been transported from southwest toward northeast route. It is thinked that there was a primary deposit at the siyenite serpantine contact although there isn't any primary deposit at present. Source deposits of the placer has finished due to erosion effects from Pliocene to present. 600.000 tons measured ore and 400.000 tons probably ore total 1.000.000 tons iron ore was determined in the light of the eight drilling holes at the placer. The content of the iron mineral which is martite in the placer varies from 1 ton 1.3 tons per cubic metre. Approximately 200.000 tons martite Containing % 62 Fe was produced from the placer in 1989