MİHALIÇÇIK YUNUSEMRE BÖLGESİ KÜÇÜKSİVRİ VE KARASİVRİ LATERİTLERİNDE NİKEL KAYNAK KESTİRİMİ VE RİSK ANALİZİ

Abstract

In this thesis, a geostatistical assesment of Mihalıççık Yunusemre Region Küçüksivri and Karasivri Laterites has been carried out. The solid models were formed by using drill hole datas for the study area investigated in three sectors: Küçüksivri, Karasivri Kantar and Karasivri Ocak. The solid model were divided into blocks with size of 15 m x15 m x 3 m , and 7.5 m x 7.5 m x 1.5 m sub-block sizes and by using Ordinary Kriging Method nickel values were estimated for each block. In addition, 100 different models were produced by using Conditional Sequential Gaussian Simulation for Küçüksivri and Karasivri Kantar Sector. The estimation and simulation results were used to produce grade-tonnage curves and tonnage and mean Ni grades were determined for the sectors. A mining scenario was evalueted for Küçüksivri Sector and by using 100 simulations grade- tonnage curves formed for the planned pit. To mine ore with mean grade 0.9 Ni %, revenue and costs were calculated for each simulation and using net present value method the risk analysis was made for the planned scenario pit for three years mining operations.