repositories of certain metals and commodities, indeed the only source of some of them, including Nb, the rare earths, Cu, V, diamond phosphate, vermiculite, bauxite, raw materials for the manufacture of ceramics, and potentially for Th, U, Diamonds, and many more. The economic potential of these rocks is now widely appreciated, particularly since the commencement of the very lucrative mining of the Palabora carbonitite for copper, a host of valuable by-products, and it the exploration efforts of mining companies that have led to the discovery of many important new localities. The present volume is likely to be of considerable interest to mineral exploration companies because there appears to be no published reviews of the economic aspects of the alkaline rocks. Readership: Research scientists in the fields of igneous petrology and volcanology, geologists interested in the regional distribution of igneous rocks and their relationship to tectonics and economic and exploration geologists. Also available: European Lithosphere Dynamics - Geological Society Memoirs M0033 - ISBN 9781862392120 The Boundaries of the West African Craton - Special Publication No 297 - ISBN 9781862392519 The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society in the world, and one of the largest publishers in the Earth sciences.The Society publishes a wide range of high-quality peer-reviewed titles for academics and professionals working in the geosciences, and enjoys an enviable international reputation for the quality of its work.The many areas in which we publish in include:-Petroleum geology-Tectonics, structural geology and geodynamics-Stratigraphy, sedimentology and paleontology-Volcanology, magmatic studies and geochemistry-Remote sensing-History of geology-Regional geology guides

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