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Slipcase 22x31cm in red and white cloth with titles to the spine, containing 2 volumes in printed wraps. Vol 1 contains the main report: (3), 130pp English text with abstract in Arabic, full-page b/w area maps, and folding colour mineral occurrence tables. Vol 2 is a map case complete with 10 Plates (all large folding maps). Near fine, with each vol initialled "HRB" to the top front corner, and archival paper reinforcement to the pocket in Vol 2. Very rare, with Worldcat and Jisc recording 3 locations (USGS, Geological Society, Portsmouth University) and two for Plate 1 only (Geological Society, Colorado School of Mines). This was prepared for the Directorate General of Mineral Resources in the Saudi Ministry of Petroleum and Mineral Resources, by Rio Tinto Finance and Exploration Ltd (Riofinex), a subsidiary of Rio Tinto Zinc (RTZ). It built on previous studies including pre-Islamic workings, and surveys since 1952 by the US Geological Survey / Aramco and the Arabian Shield Development Company. Fieldwork was done during Nov 1977 to May 1978 to describe and map the geology, its mineralisation and exploration potential, perform a geochemical wadi-sediment survey over a 500km2 area, assess data, mineral occurrences, and reassess pyrite deposits at Wadi Wassat. It found that copper-zinc sulphides had the greatest economic significance, with little or no potential in gold and nickel sulphides or the Wadi Wassat pyrite. There are good possibilities for base metal sulphides associated with volcanic rocks. Among the main outputs were the maps: 1. A Reconnaissance Geological Map of South East Asir 1:100,000, colour, 95x152cm. Features include mineral and gossan outcrops, boundaries, paved roads, cities, towns and wadis, with a detailed Geological Legend, and inset source map identifying earlier and current USGS and Aramco work. 2. Geological Map of the Wadi Wassat Area 1:25,000, b/w, 37x56cm; 3-10. Wadi Hizmah and Upper Wadi Watan Geochemistry, each 2cm to 1km, b/w, @74x61cm, covering different mesh fractions for Copper (3-5), Lead (6), Zinc (7-9) and Nickel (10). Seller Inventory # 4745
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