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An examination was made of a wolfram vein seven miles north of Broken Hill, on July 8th, 1943. This report contains brief notes on the nature of the vein and the mineral specimens examined.

This report is written chiefly to present estimates of reserves of bauxite proved to date in Gippsland. Consequently, discussions of the geological aspects of the investigation, though essential to an understanding of the subject, are kept to a minimum. The existence of bauxite in the neighbourhood of Boolarra and Thorpdale, County Buln Buln, South Gippsland has been known for some years and bauxite from Nahoo, Allot. 8 Ph. Narracan South, has been used for chemical purposes for over 20 years. Eleven additional discoveries were made from time to time up to April, 1942, when an extensive prospecting programme was undertaken. In the short time that has elapsed since then a further twelve deposits have been discovered, making a total of twenty-four deposits in the adjoining parishes of Moe, Allambee East, Narracan South, Mirboo and Budgeree in the county of Buln Buln. Several of these deposits have been systematically tested by shaft sinking and boring. This exploration is still in progress.

A visit of inspection to the Lakes Entrance Shaft, with the object of making a collection of fossils from the sediments already excavated, was made on the 17th and 18th of December. The list of fossils recognised is fairly comprehensive but for the reasons stated it consists chiefly of small forms obtained by washing down the sandy marls. The approximate depths at which the various palaeontological horizons were encountered in the shaft are given below, the sequence and lithology of the beds being identical with that proved in all bores in the vicinity.

This collection of fossils was made by Mr. H.J. Cook, Supervisor of the Lakes Entrance project during December, 1942. It consists chiefly of broken specimens of molluscan shells, the most important being a fragment of large Mitra, Fulgoraria ancilloides (Tate) and an almost complete specimen of Cypraea consobrina (McCoy). The importance of the discovery of the latter species is discussed in the report on my recent visit to the shaft, but the presence of the former (which had previously only been recorded from the Balcombian and has a length of 110 millimetres) in the present collection, again indicates that valuable information has been lost through inadequate sampling of a rich shelly zone in the Kalimnan stage.

The following information regarding calcium phosphate deposits or phosphate rock in Tasmania has been obtained from the following sources - published reports and typewritten reports of the Tasmanian Mines Department and my own personal knowledge gained while Government Geologist of Tasmania.

This report is written as a result of observations made at Mansfield during an examination of the phosphate deposits in company with members of the Joint Parliamentary Committee on Rural Industries on the 20th March.

This Bulletin presents the results of detailed studies of the Tertiary marine sequence in Gippsland, Victoria. Most of the information used in it has been obtained as a result of scout drilling jointly by the Victorian and Commonwealth Governments and of wildcat drilling by private companies. Though primarily a detailed study of a local problem, the results cannot frail to have an important bearing on the stratigraphy of the Tertiary rocks in the Australasian region and this in turn will facilitate the study of problems involving palaeogeography and correlation with extra Australian areas. The results will also have an important bearing on a major economic problem the search for oil in Australia.

A geological examination of the Renison Bell Tin Field was made in company with Mr. H.G.W. Keid, Field Geologist, Tasmanian department of Mines, during January and February, 1942. Workings, lode outcrops and the principal topographical features were mapped by plane table on a scale of 100 feet to an inch, and all accessible underground workings were plotted on a scale of 40 feet to an inch. Surface exposures were poor, owing to dense growth of bracken and other scrub and were largely confined to the vicinity of present or previous workings, tramlines, tracks, roads and railway lines. The history and production, geology, and economic geology of the field are outlined. The individual lodes are described in some detail. Methods of mineral exploration are discussed.

The Everton molybdenite-bearing area was examined by N.H. Fisher and H.B. Owen on June 16th-19th and June 23rd, and again by N.H. Fisher on August 17th. All accessible underground workings and the surface in the immediate vicinity of the mines were mapped. The history, general geology, and economic geology of the area are described in this report. A resume of the ore reserves is given, together with recommendations for the future production of molybdenite at Everton.