Mineral Resources of the Yarrol Province

PR Blake, PE Burrows, SBS Crouch, RG Gallagher, MA Hayward, DJ Morwood, CG Murray, ADC Robertson, M Scott, GA Simpson, J Tang, IW Withnall

The Yarrol assessment area is centred on the Mount Morgan township and extends from Ridgelands in the north to Monto in the south, and from the margin of the Gogango Overfolded Zone in the west to the coastline in the east, focusing mainly on the western side of the Yarrol Fault. The assessment area covers all or parts of the following 1:100 000 sheet areas - Rookwood (8851), Ridgelands (8951), Rockhampton (9051), Mount Morgan (8950), Bajool (9050), Gladstone (9150), Biloela (9049), Calliope (9149), Monto (9148) and a small portion of Scoria (9048). The main regional centres are Rockhampton, Yeppoon, Biloela, Gladstone, Monto and Mount Morgan.

The focus of this report is on identifying the possible locations and types of known metal-bearing deposits within the assessment area. An important feature is that the assessment has used regional scale digital datasets and as such provides the basis for future more detailed assessments. This assessment is intended to facilitate successful exploration and to provide an integrated product delivering both a range of information types necessary to assess and target broad areas of potential mineralisation (including current tenement information, land use, and Native Title). Analyses of prospectivity are used to support the identification of areas that are considered likely to have either porphyry type or volcanogenic massive sulphide (VMS) mineralisation, potentially the most economically significance deposit types in the assessment area. The analysis is not intended to target mineralisation at prospect scale but to provide information for the exploration industry to target tenement acquisition. In terms of landuse decision-making, the results of the assessment can be used to provide a prediction of future exploration activity, by providing both the results of prospectivity analyses and estimates of the number of undiscovered deposits. It should be recognised that the estimates of deposit numbers that may be present are provided with levels of uncertainty that reflect in part the limitations of the regional scale data used. The overall aim of the study is to draw together and provide geoscientific information in that can be used to help plan economic development, consider alternative uses of land, and plan exploration.

The assessment considers the following deposit styles:

• Porphyry type (Cu-Mo-Au)
• Skarn and Replacement (Carlin-style)
• Intrusive-related veins (mesothermal gold-quartz, polymetallic)
• Podiform chromite
• Epithermal (quartz-adularia, quartz-alunite)
• Nonintrusive-related veins (low-sulphide gold-quartz veins, mesothermal, metamorphic, listwanites)
• Cu-Zn volcanogenic massive sulphide
• Volcanogenic manganese
• Basaltic copper
• Gold on flat faults
• Lateritic nickel

To purchase Mineral Resources of the Yarrol Province print out the order form (PDF, 109 kB), or contact sales at +61 7 3237 1434.

Last Updated 22 October 2008