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Budhi Purwoko
Program Studi Teknik Petambangan Fakultas Teknik Universitas Tanjungpura
Humanities Computer Science & IT Education Industrial & Manufacturing Engineering Social Sciences

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GRANITE RESOURCE ESTIMATION USING THE CROSS SECTION AND CONTOUR METHODS AT CV. DEO GRATIAS, SANGGAU REGENCY, WEST KALIMANTAN Ifda Saputra Wibowo; Budhi Purwoko; Muhammad Fadil Iqbal
Journal of Scientech Research and Development Vol 8 No 2 (2026): JSRD, December 2026
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v8i2.1722

Abstract

CV. Deo Gratias is a granite mining company located in Pandan Sembuat Village, Tayan Hulu District, Sanggau Regency, West Kalimantan. This study was conducted because the company had not estimated the remaining granite resources within its mining permit area. The study aimed to estimate granite resource volume using the Cross Section and Contour methods and to analyze the difference between the two estimates. A quantitative approach was applied using coordinate, elevation, and overburden thickness data obtained from field observations. The Cross Section method used the Mean Area approach based on 10 sections, while the Contour method used a 1 m Contour interval with Mean Area and Frustum approaches. The estimated granite resource volume was 1,163,900.21 m³ using the Cross Section method and 1,144,518.03 m³ using the Contour method. The difference was 19,382.18 m³, equivalent to 1.66%. The difference was mainly related to the level of detail in representing deposit geometry and topographic changes. The results indicate that the Contour method provides a more detailed representation of elevation changes under the conditions of the study area.
Co-Authors Ifda Saputra Wibowo Muhammad Fadil Iqbal