Limestone Resources Estimation using Standard Facies Belt as Domain Constraint, Banten, Indonesia

Ahmad Nur Taufiqurrahman; Antoni Sahar; Asep Heri Patria Kesumajana; Dwiharso Nugroho

Ahmad Nur Taufiqurrahman PT. Geo Stroom Indonesia, Pinus Raya 20, Bandung 40294 Indonesia
Antoni Sahar PT. Gama Group, Banten Indonesia
Asep Heri Patria Kesumajana Faculty of Earth Science and Technology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132 Indonesia
Dwiharso Nugroho Faculty of Earth Science and Technology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132 Indonesia

Keywords: 3D solid model, carbonate platform, inverse distance weighting, Pamubulan

Abstract

There was scarce literature discussing the estimation of limestone quarry using carbonate platform components as domain constraints. Many estimation studies heavily focus on geostatistical methods. This study offers a new perspective on raw material resource estimation. Carbonate deposits from Pamubulan area are divided into three carbonate platform elements, namely platform interior, platform margin, and platform slope. Twelve different limestone domains were constructed. These solid model act as constraints in further estimation stages. The bimodal nature of CaO and MgO grade from the entire limestone edifice is successfully separated by the domains. Using inverse distance weighting as an estimator, 220 million tons of limestone suitable for cement raw material can be calculated. Only limestone with more than 40% CaO and less than 5% MgO is included in the calculations. Another notable feature is high-grade limestone bisected by low-grade material. Leaving complex and challenging environment for mining production.

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