Scholarly record
SIMULATION OF COPPER CONTENT IN THE SUNGUN PORPHYRY DEPOSIT THROUGH SEQUENTIAL GAUSSIAN SIMULATION (SGS), IRAN
Abstract
The Sungun porphyry copper deposit is located 75km northwest of Ahar in northwestern Iran. The Conditional Simulations, based on 31068 XRF rock analysis from the Sungun porphyry copper deposit have been applied to Geostatistical simulation. Statistical investigations reviled that, the Cu input data had single-population characteristics and obeyed a lognormal model. To carry out this geostatistical investigation, a spherical model was fitted over an empirical variogram. Plotting the empirical variogram in different directions and dips showed geometric anisotropy for the deposit in both hypogene and supergene zones. For simulating via Sequential Gaussian Simulation (SGS) method, data were transferred to standard normal and then simulated 100 times. All of the realizations were honor to histogram and variogram, so all realizations are valid. E-Type and probability maps are drawn in 12.5 meters intervals and grade-tonnage curves were drowning for each realization. E-Type maps evaluate average 621 million tones with an average copper grade of \%0.68 Cu for the whole deposit. Based on the illustrated Grade-tonnage curves, the range of tonnage variance, that is between 530 and 721 million tones have been estimated.
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References12
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