Publisher's Synopsis
Excerpt from Monographs on Mineral Resources With Special Reference to the British Empire: Prepared Under the Direction of the Mineral Resources Committee With the Assisstance of the Scientific and Technical Staff of the Imperial Institute; The Platinum Metals
The metals which comprise the Platinum group are the follow ing: Platinum, Palladium, Iridium, Osmium, Ruthenium and Rhodium.
Up to the year 1914 Russia produced over 90 per cent. Of the world's supply of platinum, the Republic of Colombia, South America, ranking next in importance with about 5 per cent. Owing, however, to the war and to the chaotic condi tions brought about by the revolution, the output Of Russia has considerably decreased, and although the Colombian pro duction has been steadily increasing, the increased demand in connection with munition manufacture caused a somewhat serious shortage during the latter stages of the war, which was especially felt in the United States. As a result much ex ploratory work has recently been carried on in an endeavour to discover new deposits of importance but up to the present, although several fresh occurrences have been brought to light, results have on the whole been disappointing.
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