 | | Journal (article/letter/editorial) | | isotopes in the sulfate evaporites from southeastern Iowa, U.S.A." Indications of postdepositional change...aDepartment of Geological and Atmospheric Sciences, Iowa State University, Ames, IA 50011, U.S.A. bHarding...isotopes in the sulfate evaporites from southeastern Iowa. U.S.A.: Indications of postdepositional change...meters below the surface across much of southeastern Iowa. In addition, Mesozoic (Jurassic?) evaporites have...have been mined from thick beds in northcentral Iowa. This study reports stable isotope analyses performed |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state... One day he has with him a cube of purple fluor-spar from Derbyshire or, perhaps, a pyramid of smoky...to include more species, such as granite and satin spar, and a wider choice of quality. But just as it...HARDNESS SCALE Talc 6. Orthoclase feldspar 2. Gypsum 7. Quartz 3. Calcite 8. Topaz 4. Fluorite...scale will mark paper. A fingernail will scratch gypsum, and a copper coin is just about as hard as calcite |  | Kogel, Jessica Elzea, Trivedi, Nikhil C., Barker, James M., Krukowski, Stanley T. - Eds. (2006) Industrial Minerals and Rocks (7th ed.) Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO. | Book (edition) | | (SME) 8307 Shaffer Parkway Littleton, Colorado, USA 80127 (303) 948-4200 / (800) 763-3132 www.smenet.... . . . . . . . . . . . . . . . . . . . . . . . Mine Safety and Health Law . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . . Gypsum and Anhydrite . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . Gypsum Plasters and Wallboards . . . . . . . . . . . ... William H. Langer Keith G. Papke U.S. Department of the Interior U.S. Geological Survey Lakewood, Colorado |
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