A deposit of heavy minerals on a beach near Cape Everard was reported by Mr. H. Smith of Noorinbee, and it was examined by Dr. D.E. Thomas, Chief geologist, Victorian Mines Department, and the writer on 5th and 6th January, 1949. The beach sand deposits were examined, and samples were taken for analysis. The results of these investigations, and subsequent conclusions, are described in this report.

This report outlines the geophysical survey work completed to May, 1949. The results and findings of this work are described in the report. The attached diagrams show results of diamond drilling carried out by Enterprise Exploration Ltd. for the purpose of testing the Peak Magnetic Anomaly and the Spotted Leopard No. 1 Magnetic Anomaly. Drill core from the Peak No. 1 Drill Hole was subjected to a mineragraphic examination by Dr. F. Stillwell and a copy of his report is included as an appendix to this report.

An inspection of radioactive minerals was conducted in the Marble Bar area. The localities of Wodgina, Mount Francisco, Pilgangoora, Alisa Downs, Trig Hill and Cooglegong were visited. Occurrences of monazite, yttrotantalite, pilbarite and radio-active columbite were investigated and samples collected for further examination. An account of the inspection and subsequent findings is given in this report.

This report describes the results of a micro-examination of five rock samples from the vicinity of the Rocket Range.

A collection of fossils from Canowindra was sent to the author for examination. The results of the examination are recorded in this report.

In 1946 and 1947 the writer had excellent opportunities to study the effect of lateritisation in the course of geological reconnaissances in Northern Australia. From field evidence which has been collected on several aspects of lateritisation - origin, products and relationship to geomorphological processes - a detailed account of lateritisation in Australia can be given. Lateritisation and the occurrence of opal are discussed in this report.

This report describes the findings of a micropalaeontological examination of a small collection of limestones from Cape Range, Rough Range and Learmonth Aerodrome, Northwestern Australia. The collection is characteristic of the Tertiary deposits of the North West Basin. The majority of the limestones belong to the "f" stage (Middle Miocene) of the Netherlands East Indies "letter" classification but the shelly limestone from Rough Range, in the absence of zonal Miocene foraminifera is regarded as Lower Pliocene. A detailed palaeontological description of these samples is given in this report.

Coal outcrops in the bed of a small gully tributary to the Severn River, at a point 7 miles north of the village of Ashford, 36 miles north of Inverell, New South Wales. A small colliery has been developed in the Ashford Seam and worked intermittently until 1925, mainly to supply coal and coke to the Silver Spur mine near Texas, Queensland. The coalfield and extensions to the north and south have been examined by officers of the New South Wales Department of Mines, the Australian Aluminium Production Commission, the Joint Coal Board and others. During March, 1949 a diamond drilling programme was initiated by the Bureau of Mineral Resources, Geology and Geophysics and both geological and geophysical investigation of the area was carried out by the Bureau during the early phases of the drilling campaign. The geology of the area, nature of the coal, and drilling results are discussed in this report. Logs of diamond drill holes and percussion bores sunk by a former lease-holder are given in the appendix.

This report describes the results of a micropalaeontological examination of samples taken from the depth of 1,260 to 1,480 feet down. This series is in continuation of that reported upon in Records 1948/065 and 1948/050.

One gram of sample No. 1 and 2 grams of No. 2 were dissolved in about 100mL of hot water. After dissolving the soluble portions the solutions were filtered and the undissolved portions dissolved and weighed. This weight subtracted from the original weight of the sample gave the amount of soluble salts. The filtrate was diluted to 250 mls with distilled water, 100 mls being used for Ca and Mg determination. The results of this experiment are given in the report.