The most important phosphate deposits in South Australia are situated in the Kapunda-Angaston districts and of those the principal deposits which have been worked are: 1) St. Kitts, 11 miles easterly from Kapunda; 2) St. Johns, 4.25 miles south-east from Kapunda; 3) Tom's, 5 miles east-south-east from Kapunda; 4) Moculta or Klemms, 3 miles north-east of Angaston. Deposits Nos. 2, 3 and 4 were examined in company with Mr. S.B. Dickinson, Deputy Government Geologist of South Australia on the 30th March. The following notes are written to set out as briefly as possible, the salient features of the deposits and to indicate the prospecting which it is considered is immediately necessary.

Presentation made to the Second Symposium on Resource Assessment Methodologies organised by the Potential Gas Committee and the US Geological Survey. Discussed methodology used at Geoscience Australia and presented some recent results from the Bonaparte and Browse basins.

In response to a request from Mr. W.H. Williams, Director of Mines, Tasmania, a geological survey was made of the asbestos deposits situated near the tunnel on the Emu Bay railway, 5 miles north-east of Zeehan. A programme of investigation was set out involving a detailed survey of the deposit, prospecting and development work, an assessment of potential fibre grades and ore values, and research into milling practice and market utilization of fibre. The geological survey and related investigation, which are the focus of this report, were concerned mainly with the first three items. Three plates, including a geological map, surface plan, and a plan showing underground workings and effective grades, are attached to this report.

Brief descriptions and estimates of the size and grade of the more important known uranium deposits in various parts of the world.

Bauxite deposits on Rosedale, Meadowbank and Riccarton Estates at Campbell Town were tested by shaft-sinking and boring during November and December 1946. Earlier than this the Tasmanian Mines Department had sunk a number of shafts on the deposits, mainly at widely spaced intervals. The work undertaken chiefly consisted of testing between the shafts sunk by the Mines Department so that the interval between the points tested was reduced to 200 feet or less. A few of the old shafts were cleaned out and resampled. The results of the tests at each estate are discussed in this report.

The correlation of seafloor features identified on multibeam bathymetry data with subsurface fluid flow pathways interpreted from seismic data provides insights into the nature of fluid flow mechanisms and seal integrity in the Capel and Faust basins. The magmatism and fluid flow activity have implications for petroleum prospectivity of the Capel and Faust basins. Hydrocarbon accumulations that may have formed within the deeper syn-rift and the pre-rift sections are less likely to have been affected by the Cenozoic magmatic and fluid flow processes and, therefore, may represent lower-risk exploration targets.

A review of the geochemical processes controlling the distribution of thorium in the Earth's crust and Australia's thorium resources can be downloaded from Geoscience Australia's website. The review is one of the outputs from Geoscience Australia's Onshore Energy Security Program (OESP). It will provide an enhanced understanding for government policy and industry investment decisions of the status and distribution of Australia's thorium resources and their potential as an alternative nuclear fuel source for overseas markets.

The principal deposits of bauxite occur on Bintan and adjacent islands which lie about 50 to 100 miles south-east from Singapore. This report is comprised of three extracts which have been drawn from papers made available to the writer by the Australian Government Commissioner for Malaya. The production figures, composition, and nature of the bauxite deposits are described in these extracts.

This report is written in advance of the main report in order that a drilling campaign to test the scheelite deposits can be considered immediately. The descriptions are necessarily brief and moreover the report is not accompanied by the full set of plates which will accompany the main report. Present values suggest that the scheelite deposits could be worked on a much larger scale than the present one. The King Island scheelite mines have been operated during two periods, the first being between 1917 and 1920, and the second from 1938 to date. During the first period 67,710 tons of ore were treated for a production of 589 tons of scheelite concentrate, the average yield of concentrate being 0.87 per cent. During the second period 98,305 tons of ore were treated for a production of 627 tons of scheelite concentrate, the average yield on concentrate being 0.64 per cent. In addition and during the latter period 41,260 tons of tailings were re-treated for a production of 52 tons of scheelite concentrate, the average yield being 0.12 per cent. The mine is being worked at present and some 30,000 tons of ore are treated annually for a recovery of 200 tons of scheelite concentrate.

This investigation was undertaken primarily to assess the importance of a discovery of gold in the tributaries of the Porgera River west of Mt. Hagen, Mandated Territory of New Guinea. Two patrols were carried out. The first patrol was from Wabag to Mongureba. The purpose of the patrol was to inspect the main gold find in the vicinity of Mongureba. The occurrence of alluvial gold was also reported from the River Timen area, and consequently a patrol from Wabag to Mt. Hagen Police Post by way of the River Timen was undertaken. This report gives an account of the geological reconnaissance and its findings. The physiography, geology, geomorphology, and economic geology of the area are described. Accompanying maps and photographs are included.