Open AccessOre mineralogy of podiform-type chromite deposit in Tedubara area and its vicinity, Kabaena Island, Indonesia
Author(s) -
Sara Septiana,
Arifudin Idrus,
F. Zaccarini,
Giorgio Garuti,
Lucas Donny Setijadji
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/851/1/012044
Subject(s) - chromite , chromitite , electron microprobe , geology , geochemistry , platinum group , mineralogy , platinum , ophiolite , chemistry , tectonics , paleontology , biochemistry , catalysis
Kabaena Island is one of the areas in Southeast Sulawesi that has the potential for chromite deposits. This paper is aimed to provide information on the mineralogical aspects of chromitite from the research area. Back-scattered electron (BSE) imaging and chemical analysis of chromite were performed using an electron microprobe. Chromite deposits in the study area are of podiform-type. Chromite is massive and brecciated. Based on the content of Cr # = Cr/(Cr + Fe 3+ ) of the chromite, comprised between 0.61 and 0.74, the studied chromitite can be classified as Cr-rich. The only PGM (Platinum Group Minerals) found in several chromitite samples is laurite (RuS 2 ). PGM occurs enclosed in chromite crystals and in the contact with microfractures of chromite crystals.