Report of the Meetings Volume 77

Report of the Meetings Volume 77

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: that all the economically important iron ores are limited to shallower depths than some lodes of gold, copper, and tin; but this conclusion shall not enroll me among the pessimists as to the future of the iron supply. Twenty years ago a paper on the gold supplies of the world was read to the Association at the request of the Section of Economics. About the time that the report was issued, there were sixty-eight mining companies with a nominal capital of 7 3,000,000l. at work upon the Rand. Nevertheless, the author, accepting the view that 'the future of South African gold-mining depends upon quartz veins, ' concluded: ' There is as yet no evidence that the yield will be sutlicient in amount to materially influence the world's production. As regards India, the prospect is still less hopeful.' That quotation may be excused, as it is not only a warning of the danger of negative predictions, but of the unfortunate consequences that happen when geologists are unduly influenced in geological questions by the opinions of those who are not geologists. In economic Geology, as in theoretical Geology, we should have greater confidence in the value of geological evidence. Negatiie predictions are especially rash in regard to iron, it being the most abundant and widely distributed of all the metals. The geologist who knows the amount of iron in most basic rocks finds it difficult to realise the possibility of an iron famine; he can hardly picture to himself some future ironmaster complaining of 'iron, iron everywhere, and not a ton to smelt.' There are reserves of low grade and refractory materials which the fastidious ironmaster cannot now use, since competition restricts him to ores of exceptional richness...
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Product details

  • Paperback | 422 pages
  • 189 x 246 x 22mm | 748g
  • United States
  • English
  • black & white illustrations
  • 1236881281
  • 9781236881281