The Symposium. Retrospect and discussion

This paper reviews briefly and discusses some of the material presented during this Symposium. Much of the Symposium centred around two main questions: 1) What are the characteristic features of the known uranium mineralization in the Pine Creek Geosyncline. 2) How did the known uranium mineralization in the Pine Creek Geosyncline form. It is convenient to begin by reviewing briefly the models which were proposed during the Symposium. The present authors have had to base this review and discussion paper on the papers presented at the Symposium. They do not in any way seek to pass judgement on these papers, but attempt to make constructive comments and draw attention to some problems. While the Symposium is a landmark in our progress towards gaining a full understanding of uranium mineralization in the Proterozoic rocks of northern Australia, we look forward to further work which will confirm or modify some of the concepts put forward. For the most part we will not refer to mineralization other than of uranium. Indeed, most of this paper will be concerned with the very rich uranium mineralization which occurs in the Alligator River Uranium Field