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Legacy product - no abstract available
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This map is produced as part of a series of three maps showing selected mines and mineral deposits and commodities throughout Australia for 2007 on a magnetic raster image.
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This statement supplements Record 1952/46, "Results of Drilling for Open-cut Coal in the Bloomfield Area, Newcastle District, N.S.W.", by G.M. Burton. It covers drilling in the south-south-easterly extension of the main Bloomfield Area. A total of 10 scouting holes were drilled in this extension but the results were so poor that drilling was halted and no testing and defining programme was undertaken. The drilling did not define any reserves of open-cut coal. Seams intersected included the Buttai, Donaldson's, Big Ben and Tomago Thin. It was almost impossible to correlate the seams even in adjoining bore holes.
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This dataset is a spatial representation of the OZMIN Oracle relational database containing geological and resource information for Australian mineral deposits. OZMIN has been compiled from published references and has been designed so that attribute information can be retrieved and analysed in relation to spatial data contained in geographic information systems. The national mineral deposits dataset contains data on more than 1050 major and historically significant mineral deposits for 60 mineral commodities (including coal): over 7400 references cited.
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Igneous rocks have long been recognised as an important source of metals in uranium mineral systems. Although magmas may form mineral deposits in their own right, they may also contribute directly to basin-related mineral systems as a source of metals and/or ligands. Thus, mapping of the distribution of uranium in igneous rocks has the potential to highlight potentially prospective regions for uranium mineralisation at a macro-scale. Map 3 in the series of three maps of the uranium content of Australian igneous rocks shows the interpreted solid geology distribution of igneous rocks. Since no nationally seamless solid geology map yet exists, datasets have been compiled from a variety of State and Territory open file sources. Polygons are coloured by their average uranium content. The average uranium content of each polygon was calculated by plotting the igneous polygons together with geochemical sample points (distribution shown in Map 1 of the series) using ArcGIS software. Each polygon was then attributed with the average uranium value (in ppm) of all intersecting geochemical sample points. This approach allows igneous uranium content to be assessed on the pluton- to province-scale, depending on polygon resolution. Furthermore, the use of solid geology datasets allows for the uranium content of igneous rocks in the subsurface to be assessed, opening up broader areas for new potential uranium mineral systems. Together with the two other maps in the series, this map demonstrates the close spatial relationship between uranium-rich igneous rocks and areas of known uranium mineralisation. In addition, new regions previously unknown for uranium mineralisation can be identified.
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This paper reviews recent developments in igneous metallogeny, in particular, with regard to intrusion-related copper-gold and gold mineralisation, to show that eastern Australia is still prospective for granite-related gold systems.
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Australia's Identified Mineral Resources is an annual nation-wide assessment of Australia's ore reserves and mineral resources.
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Six scout drilling holes totalling 1020 feet of drilling were sunk by the Bureau in the Stony Pinch and Thornton Area, about 6 miles south-south-east of the City of Maitland in the Hunter Valley of N.S.W. The bores penetrated the Four Mile Creek beds and the Buttai Sandstone of the Tomago "Stage" of the "Upper" Coal Measures. In the absence of reliable stratigraphical control, the seams cannot be correlated with much certainty. Bore BMR 4 Stony Punch indicated that Donaldson's Seam(?) is thin and much banded; the coal, excluding bands, has an ash content of about 15% and calorific value of 12,300 B.Th.U/lb. This same bore showed that the basal 7 feet 3 inches of the Big Ben Seam had an ash content of about 25% and calorific value of 10,600 B.Th.U/lb. if 8 inches of non-coal bands are excluded. The general results of the drilling were that the coal seams were heavily banded, variable and high in inherent ash. Accordingly the prospecting was halted after drilling six holes.
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The analyses of some Australian iron ores was undertaken. The results of these analyses are set down in this report. Results are given for each deposit by state.
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This documentation manual for the Mount Isa dataset provides description of AGSOs mineral deposit database (OZMIN) - it's structure, the main data and authority tables used by OZMIN, database table definitions, details on the Microsoft Access version of the database and a listing of those deposits in the Mount Isa dataset