The beach sands on which investigations were carried out, were mainly from beaches along the eastern coast of Australia and from islands adjacent to this coast. A high percentage of the mineral grains of the heavy mineral fraction in these sands have grain sizes within the range -100 to +200, referred to British Standard Sieves. The grain size of the minerals, combined with the fact that the grains are quite well rounded, makes the heavy mineral sands an ideal subject for separation using the inclined method with the Isodynamic Separator. The use of this method, and the results obtained, are described in this report.

The Northern Territory is an integral part of the great Australian Pre-Cambrian shield which underlies almost the whole of Western Australia and the Northern Territory, much of South Australia and portions of New South Wales and Queensland. In most parts of the Continent, Pre-Cambrian rocks were welded into a stable shield before the end of Pre-Cambrian time, and in the Northern Territory itself the structural framework was established, and most of the mineral deposits introduced by an orogeny which terminated geosynclinal sedimentation about the end of the Lower Proterozoic. This discussion of the structure of the Territory in relation to mineralization is mainly concerned with Pre-Cambrian, and in particular with Lower Proterozoic rocks. Only a broad outline of the subject is given here.

A visit was paid to the mine on March 14th, 1945, during a field season at Mount Bischoff. The purpose of the visit was to gain some general idea of the potential importance of the deposits as a source of asbestos fibre. The location and access, workings, geology, and the grade of orebodies are discussed in this report. An accompanying sketch plan of the deposit is included.

Boring commenced in the Broadbeach area on an East-West line 500 feet south of the northern boundary of DC22. Subsequent boring was carried out along lines 1300 feet, 2100 feet, 2900 feet, 4500 feet, 6125 feet, 7740 feet, 9300 feet, and 10900 feet south of the northern boundary of DC22. The results of the beach sands investigation are presented here. Estimates of the tonnages of heavy-mineral concentrates, the average grades of the heavy-mineral bearing sands and the average thickness of overburden, are tabulated. The complete set of data, from which these figures have been calculated, is attached as an appendix to the report.

Quartz crystals occur in the county of Dampier near the head of Tuross River 13 miles east-southeast from Countegany and about 5 miles east-southeast from Tuross Post Office. The presence of small quartz crystals in this locality has been known to Mr. L.W. Schaeffer of Tuross for many years, but only recently has he found larger crystals and undertaken more systematic prospecting. This report comprises notes on the quartz crystals, following an examination of the locality, 1944.

Notes on granite and structural features following an examination of the granite outcrop at Balladonia Station. A sketch plan of the outcrop is included this report.

This guide provides information on investing in minerals and petroleum in Australia. It is for distribution at conferences and online. The chapters are 01. MINERALS AND PETROLEUM AND THE AUSTRALIAN ECONOMY 02. EXPLORING FOR MINERALS IN AUSTRALIA 03. EXPLORING FOR PETROLEUM IN AUSTRALIA 04. ROLE OF GOVERNMENT 05. FOREIGN INVESTMENT GUIDELINES AND BUSINESS ENTRY INTO AUSTRALIA 06. ONSHORE APPROVAL PROCESSES 07. OFFSHORE APPROVAL PROCESSES 08. INDUSTRY GROWTH CENTRES 09. SOCIAL LICENCE TO OPERATE 10. MINE HEALTH AND SAFETY 11. WORKING VISAS, IMMIGRATION AND SKILLS 12. INDIGENOUS ENGAGEMENT 13. TRANSPORT INFRASTRUCTURE 14. MINING EQUIPMENT, TECHNOLOGY AND SERVICES 15. TARIFFS AND CUSTOMS DUTY CONCESSIONS 16. TAXATION-GENERAL 17. TAXATION-PETROLEUM 18. TAXATION-MINERALS

During the last three years much work has been done on laterites in Northern Australia by geologists of the Bureau and in particular those attached to the North Australian Regional Survey. The co-operation of soils officers and geologists in this survey has led to a better understanding of the significance of laterites and of the zones within the profiles. Since several parties from the Bureau are now working in Northern Australia it seemed opportune to discuss the nomenclature of laterites and to suggest terms and definitions so that laterites can be described and mapped in the same way by the several field parties. With this object in view geologists from the Bureau and officers from the North Australian Regional Survey discussed the matter and the following terminology and definitions are circulated now for criticism within the Bureau.

The presence of apatite on the southern portion of Alcoota Station has been known for several years. The locality was visited during October, 1944. Two days were spent in the examination of the deposit and mapping. An account of the locality, geology and mineralisation is provided in this report.

For trade purposes four types of asbetos may be recognised - Amphibole, Blue Asbestos, White Asbestos, and Amosite. This report contains notes on the possibility of substituting these types of locally produced asbestos for imported chrysotile.