Depth Profiling of Dark and Light Green Bacan: Construction of Material Characters Models from Elemental Analysis and Mineralogical Characterization
Rizky Arief Shobirin, Abdul Malik Bahrudin
J. Pure App. Chem. Res. Vol 5, No 3 (2016), pp. 162-172
Submitted: July 08, 2016     Accepted: October 06, 2016     Published: October 05, 2016
DOI: http://dx.doi.org/10.21776/ub.jpacr.2016.005.03.291

Abstract


The evolutional depth profiling methods for Bacan minerals has been applied through elemental analysis and mineralogical characterisation, then the materials models described the difference of materials characters.

We have demonstrated the evolutional depth profiling methods for local minerals of Bacan in order to establish the sold price and maintenance of minerals sector in Indonesia. The depth profiling methods was performed by elemental analysis and mineralogical characterisation using X-ray fluorescence (XRF) and X-ray diffraction (XRD). We refined materials parameters then constructed the materials models to describe the difference of materials characters. These results described that LG Bacan has crystals phase of  Dioptase (CuSiO3), Liebenbergite (Ni2SiO4), and variant of Calderonite (Ca2CuP2O9). DG Bacan has crystals phase of Fayalite (Fe2SiO4), and variant of Ferriannite (KCaFe3Si3O12). All crystals phase in LG Bacan has growth orientation on [001] direction, and has more structured crystallite size with small range of its distribution. All phase in DG Bacan has the preferred growth so, except Fayalite crystal phase. DG Bacan less structured than LG Bacan, with wider range of crystallite size distribution, but has harder structure than LG Bacan. Quartz structure in LG Bacan was more polar than DG Bacan.


Keywords : Bacan, Mineralogical Characterisation, Elemental Analysis, XRF, XRD, Materials Modeling
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