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Location: 160 km W from Mackay, Queensland, Australia
Suttor Development RoadGlendenQueensland, Australia4743
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The Centurion Project lies on the Collinsville Shelf on the western margin of the Bowen Basin in Central Queensland. The regional stratigraphy of the area comprises the Permian Blackwater Group which comprises three coal bearing sequences, the Moranbah Coal Measures (MCM), the Fort Cooper Coal Measures (FCCM), and the Rangal Coal Measures (RCM), the Triassic Group sediments (Rewan and Clematis) and Tertiary sequences. The Project covers the subcrop of the Moranbah and Fort Cooper Coal Measure sequences. The Permian strata is regionally overlain by Triassic Rewan Group and Clematis Group sediments, however in the Project area the Triassic sediments have been removed and a large unconformity exists between the Permian and Tertiary sediments. The main seams of economic interest are the Goonyella Upper A, the Goonyella Middle and the Goonyella Lower B2.The Project ‘s primary focus is the GM seam. Other seams with estimated resources are the GUA and the GLB2 seams. These seams show high fluidity and good caking properties and are sold as metallurgical, hard coking coal.The MCM coal seams present as either medium volatile or high volatile A bituminous coal (ASTM Classification). The upper seams present as high volatile A, while the GM seam and lower are classified as mediumvolatile. The volatile matter generally decreases with depth, indicating a change in rank, as highlighted previously. While not consistent with every seam, rank generally increases towards the south. Raw sulphur levels within the coal are generally moderate, averaging approximately 0.5% air dried (ad) for the resource. The phosphorus content is low to moderate, and the chlorine levels are uniformly low across the resource. Tests on the coals have indicated that all seams show coking coal potential once the allowance is made for varying ash levels.Peabody classifies the Centurion property as a coal deposit with moderate geological complexity based on the following factors: - The target seams are laterally continuous and can be correlated using geophysical logs across large distances with high confidence. - The seams are relatively flat lying (typically < 5 degrees), dipping towards the east. Larger faults can be delineated by drill hole intersections and seismic surveys (2D and/or 3D). - The GM seam is well known because – * Peabody has successfully mined it in the North Goonyella underground (longwall) mine within the property. * The Goonyella seams have been being mined in several open cut and underground mines in the region.The areas of potentially higher variability or uncertainty are around seam intrusions (dykes, sills and/or plugs), Tertiary basalt flows in the overburden as well as fault locations and seam displacements. A multifaceted exploration approach is utilized to increase confidence in the geological interpretation, including seismic surveys and associated validation drilling.
