ore
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This report describes a geophysical survey made in May 1952 and August 1953 at the Silver Valley mine workings, near Inverell, N.S.W. From the workings there is evidence of mineralisation along a well-defined fissure and one ore shoot has already been partly developed. The survey was made in an attempt to locate other ore shoots of sufficient size to warrant mining operations. Self-potential, magnetic and electromagnetic methods were used in the survey. The self-potential method showed a well-defined anomaly on the eastern extension of the fissure, indicating that a small body of sulphides may exist there with its centre about 300 feet east of the known ore shoot. The magnetic and electromagnetic results showed no pronounced anomalies which could be correlated with any defined ore shoot. Recommendations are made as to how the self-potential anomaly could best be tested. These comprise sinking a shaft at the centre of the anomaly, extending an existing adit, or driving a new adit from a point nearer the anomaly.
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A geological report on the Alexander, Halley's Comet, and Manolis' Workings mines. The production, grade, geology, mineralisation, ore reserves, and prospecting of the mines are discussed. Accompanying geological plans are included.
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The Treasure Mine, Hatches Creek, is believed to have been discovered in 1914 and has been one of the most consistent producers of wolfram to the present time. This report gives an account of the economic geology of the mine. The ore type, reefs and workings, ore localization, and ore reserves are described.
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The area was geologically investigated at the request of the Director of Mines, Alice Springs, by A.D.M. Bell and J. Firman. Mapping was by chain and compass traverse during periods 29th to 31st October, 1952; 4th to 6th November, 1952 and 19th December, 1952. Previous geological reconnaissance was made by B. Thompson of the Enterprise Exploration Company in 1948.
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Mining and exploration activities and geological investigations carried out in the Rum Jungle area during 1951 and 1952 have provided important results and basic information concerning the known uranium deposits, and indicate the presence of numerous interesting prospects requiring further investigation. Details of the results and the nature of the investigations are given in the following pages.
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A geological survey of the mount Bischoff Mine area was commenced in January, 1944, with the objects of delimiting the known ore shoots, determining the field relationships of those and so arriving at an understanding of ore occurrence which could be applied to the location of possible new shoots. By April the open cut area had been surveyed accurately and in detail, a general geological reconnaissance made and detailed geological mapping carried out of half of the open cut and a considerable part of the area outside the open cut. This report comprises a discussion of existing and suspected ore reserves. The report includes an assay plan and a diagram of assay sections of the Greisen orebody.
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Dyson's Find is situated 1000 yards east-north-east of White's workings. A radiometric anomaly was discovered here in 1950 by geophysicist D.F. Dyson while traversing the sedimentary rocks between Giant's Reef to the south and the edge of Rum Jungle to the north. No uranium minerals were visible on the surface but costeaning revealed four lines of strong secondary uranium mineralisation. In 1950 the area was mapped by H.J. Ward on a scale of 50 feet to one inch. A prospecting shaft (No. 1 Shaft) was sunk to a depth of 54 feet on one of the uraniferous lodes and some costeaning carried out. In 1951 further mapping on a scale of 20 feet to one inch was done by the writer. Diamond drilling was carried out and a new shaft (No. 2) was sunk to 84 feet. A plan showing the surface geology and working and a section along coordinate N170 accompanies this report. [Geology, structure, mineralization, workings, diamond drilling, ore reserves, and prospecting recommendations are discussed].
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The present report gives an overview of the general geology and ore geology of the Blue Spec Mine. The main orebodies are described in some detail. General estimates of reserves and recommendations for future geological work are noted.
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The geology, production history, ore grade, and ore reserves of the Northern Star Mine are discussed in this report. Four accompanying plans are included.
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During the past three to five years small amounts of oxidized copper ore have been reported from various localities in the James Ranges to the west of Alice Springs. During a visit to Alice Springs in July of this year information on these deposits was obtained from the Resident Geologists, A.D.M. Bell, and it is considered that potentially they may be of considerable importance and Bell has been instructed to investigate them further. The deposits are briefly discussed in the monthly report by Bell dated 3rd July, 1953. In this report he states that the rocks to the west of Alice Springs, where limestones are developed only on a comparatively small scale, are not likely to contain ore deposits to the extent of those to the east of Alice Springs where extensive limestone deposits occur. This concept is discussed below. [A supplementary note is enclosed which describes an inspection of the area which was conducted in September 1953].