Bureau of Mines / Minerals yearbook: Metals and minerals 1978-79
Year 1978-79, Volume 1 (1978-1979)
Minor nonmetals, pp. 1051-1063 ff. PDF (1.8 MB)
Page 1051 Staurolite___________________ 1051 Strontium___________________ 1051 Wollastonite - 1056 Zeolites 1056 Page 1058 1059 1062 1062 1051Minor Nonmetals By Staff, Section of Nonmetallic Minerals Asphalt____________________ Greensand Meerschaum Quartz crystal CONTENTS ASPHALT (NATIVE)1 Native asphalt was produced in 1978-79 by six companies in four States. Leading States were Texas and Utah. Output increased 37% in 1978 to 1.7 million tons and decreased 5% in 1979 to 1.6 million tons while value increased 39% in 1978 to $19.3 million and 33% in 1979 to $25.6 million. Bituminous limestone was produced by Whites Uvalde Mines and by Uvalde Rock Asphalt Co. in Uvalde County, Tex.; by Southern Stone Co. in Colbert, Ala.; and by Barton County Rock Asphalt Co. in Barton County, Mo. The product was used mainly in street and road repair. Gilsonite was produced by America~i Gilsonite Co. in Uinta County, Utah, and by Ziegler Chemical and Mineral Corp. in Weber County, Utah. This material was used for purposes other than road repair. GREENSAND2 Greensand (glauconite) was produced in 1978-79 only by the Inversand Co., a subsidiary of Hungerford and Terry Inc., near Clayton, N.J. Production and sales information is withheld to avoid disclosing company proprietary data. Raw greensand produced by the company was sold for agricultural use as a soil conditioner. It contains both potassium and phosphorus. Processed greensand was sold as a filter media for the removal of manganese, iron, sulfide, and other elements from water. IODINE3 U.S. demand for crude iodine in 1978 and 1979 was satisfied in part by increased domestic production and withdrawals from the surplus world supply accumulated in prior years. By 1979, however, the iodine market was becoming unbalanced with demand exceeding supply. During the 2-year period, the quoted price of crude product was raised five times, and reached $4.54 per pound by yearend 1979. Faced with rising prices and the possibility of shortages, U.S. chemical companies stockpiled iodine supplies in 1978 for consumption in 1979 and future years.
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