#TITLE_ALTERNATIVE#

• Main Author: HARMAWAN FIRDAUSI (NIM 12103055), HADI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22316
• Institution: Institut Teknologi Bandung

The increases of world demand of mining industries commodity supplies has increase the exploration acitivity of valuable deposite. Now, mining activity even occures on area that has uneconomic history. The grade of ore deposit is influence by the element concentration in the deposit. The concentration of the element in the deposit is influence by many factors, one of them is the genesis of the deposit. Research in laterite deposit could add the knowledge about groundwater control in the element enrichment, laterite deposit modelling, and accurate exploration strategy.<p> <br /> <br /> <br /> To learn more about the laterite deposit, a laterite deposit model in laboratory scale has been made, it adjust the condition of research area at Sorowako-South Sulawesi and a simulation of groundwater flow.<p> <br /> <br /> <br /> The obeservation results are the changing of water physicschemical parameter, the pH value decrease to 6 at the beginning of simulation process, and it start to increase until it has the same value as the rainwater pH value at the end of the simulation process, Eh fluctuation is small (-0.1 V), the TDS average value in the downstream column on model is the highest value (171.8 mg/l), Ec has the same pattern as the TDS pattern and DO value increase from 4 mg/l to 12 mg/l, the decrease of dissolved element concentration in the water, the changing of the element concentration in each of laterite layer and clay mineral fraction that occurred. The analysis of the results shows that Eh, Ph, TDS, Ec and DO are influenced by the leaching process, time and the groundwater flow will influence the concentration of the leached element, the highest degradation of element concentration is occure on the recharge column, and many factors that should to consider to modelling a laterite deposit.