Estimation Of Mangaan Carrier Rock Volume Using Geoelectric Method In Empol Sub-Village, West Lombok Regency

Dieni Haryati Utami,Suhayat Minardi,Alfina Taurida Alaydrus

doi:10.29408/kpj.v4i2.2731

Abstract

The research has been done using geoelectric resistivity method to estimate the volume of Manganese (Mn) carrier rock in Empol sub-village, Central Sekotong Village, West Lombok NTB. Measurements was conducted with the Wenner configuration using a Resistivity Meter G-Sound GL - 4100. Data was modeled and calculated using three software, there are Res2Dinv 3.5, Surfer 10, and Rockwork 15. The rocks that regarded as carrier mangaan is pyrolusite manganese (Mn02). The description and distribution of MnO2 can be determined from the results of 2-dimension modeling using Res2Dinv. Mn02 was detected in almost all resistivity line with value around 0,023 m up to 9,8 m. From the 3-dimension visualization processed using RockWorks 15 software, we obtained volume of pirolusit about 38,199 m3 of area 160,000 m2 and 100 m of thickness.

Highlights

Based on data from the Ministry of Energy and Mineral Resources of Lombok Island, the geologically Lombok Island are composed of alluvium deposits, inseparable volcanic rocks, tuffs, pumice, breccia and lava, limestone, sandstone and igneous rock (ESDM, 2013)
These rocks were store mineral resource contents that can be utilized as mineral commodities such as metal minerals with high economic value, there are non-metallic minerals such as limestone which are beneficial in the industrial world
Geoelectric investigation by method resistivity is based on Ohm's Law, which states that it is potential different due to a load is directly proportional with electric current

Summary

INTRODUCTION

Based on data from the Ministry of Energy and Mineral Resources of Lombok Island, the geologically Lombok Island are composed of alluvium deposits, inseparable volcanic rocks, tuffs, pumice, breccia and lava, limestone, sandstone and igneous rock (ESDM, 2013) These rocks were store mineral resource contents that can be utilized as mineral commodities such as metal minerals with high economic value, there are non-metallic minerals such as limestone which are beneficial in the industrial world. Mn metal is hard but brittle ( broken), has a high conductivity and a low resistivity value. Because of the nature of this metal Mn has excellent electrical conductivity and has a low electrical resistivity value, so it is very suitable to be identified using the geoelectric method.

Geoelectrical Method

RESULT