Research Article
X-Ray Computed Tomography Analysis of Sajau Coal, Berau Basin, Indonesia: 3D Imaging of Cleat and Microcleat Characteristics
Table 1
Sajau coal characteristics, density, porosity, and permeability.
| | Mining area | Coal maceral | Ro | | | | | Sample ID | H (%) | L (%) | I (%) | (%) |
(%) |
(%) | (md) |
| | Tanah Kuning | | | | | | | | | MNH-1A | 84.6 | 12.8 | 2.6 | 0.34 | 1.27 | 8.20 | 57.24 | | MNH-3C | 81.2 | 11.6 | 7.2 | 0.31 | 1.08 | 6.04 | 15.11 | | MNH-3D | 76.1 | 11.8 | 12.1 | 0.32 | 1.06 | 4.10 | 14.02 | | MNH-3E | 84.9 | 9.2 | 5.9 | 0.24 | 1.02 | 5.82 | 28.62 | | KAH-1F | 78.6 | 12.8 | 8.6 | 0.26 | 1.20 | 6.92 | 1.06 | | NG-19G | 84.1 | 9.8 | 6.1 | 0.26 | 1.12 | 5.08 | 0.41 | | NG-19I | 88.2 | 8.6 | 3.2 | 0.26 | 1.10 | 5.18 | 1.23 | | Mangkupadi | | | | | | | | | CH-54A | 84.2 | 11.7 | 4.1 | 0.34 | 1.24 | 5.20 | 1.42 | | CH-53A | 86.7 | 9.6 | 3.7 | 0.36 | 1.21 | 3.24 | 14.62 | | CH-101A | 84.4 | 10.2 | 5.4 | 0.36 | 1.24 | 3.02 | 4.18 | | Kasai | | | | | | | | | SH-101A | 86.5 | 9.4 | 4.1 | 0.38 | 1.27 | 9.92 | 67.21 | | SH-106A | 86.2 | 10.9 | 2.9 | 0.36 | 1.27 | 12.92 | 128.24 |
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Note. : coal density (g/cm3), Ø: coal porosity by MICP (%), : permeability by MICP (md), Ro: huminite reflectance (%), H: huminite (%), L: liptinite (%), and I: inertinite (%).
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