These documents have been scanned by the GA Library. Please refer to the document for contents.

These documents have been scanned by the GA Library. Please refer to the document for contents.

These documents have been scanned by the GA Library. Please refer to the document for contents.

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

Includes Record 1955/095

Legacy product - no abstract available

Legacy product - no abstract available

In response to an application by Renison Associated Tin Mines N.L., supported by the Department of Mines, Tasmania, a geophysical survey of the Renison Bell Tin Field was started by the Bureau of Mineral Resources, Geology and Geophysics in 1950 and continued during 1951 and 1952. The field is situated in the West Coast region of Tasmania, and, up to 1955, had yielded concentrates containing about 3,000 tons of metallic tin. The object of the survey was to assist in the finding of additional ore-bodies in the field. In a survey of portion of the field by the, Imperial Geophysical Experimental Survey in 1929-30, the magnetic and self-potential methods were the most successful of those tested, and these methods were therefore used by the Bureau. The work done in 1950 was mainly over known ore-bodies, and the results obtained confirmed the applicability of the methods, as well as proving anomalies that could indicate sulphide bodies containing pyrrhotite. In 1951 and 1952, the survey was extended to the south and east of the area surveyed in 1950. Numerous intense, well-defined anomalies were obtained by each method, and in many places the anomalies obtained by each method agreed generally in position. These anomalies provide strong indications of sulphide mineralization containing pyrrhotite, but testing will be necessary to determine the extent and nature of the mineralization and the tin content thereof. Recommendations are made for the testing of the indications by drill holes and trenches, and for the extension of the survey to other parts of the field, but not until the results of this testing of anomalies are available.