 | | Journal (article/letter/editorial) | | Figure 1. Postcard view of the Waukon iron mine, Allamakee County, cia. 1912. John Taylor collection. ARTHUR...Unfortunately. with today’s environmental laws and mine and quarry regulations. the prolific collecting...HAROLD L. PRlOR P.O. Box 111 Columbus Junction, Iowa 52738 halprior@ louisacomm.net When we began this...too, could be cited with many other localities. Iowa contains the type locality for one mineral, iowaite...December 2014 Figure 2. Map of Iowa showing the counties. Courtesy Iowa Geological Survey. ACKNOWLEDGMENTS |  | | Journal (article/letter/editorial) | | Figure 1. The state of Iowa map; prepared by William Besse. IOW AITE Sioux County, Iowa BRUCE CAIRNCROSS ...1,000–1,500 feet below the surface in Sioux County, Iowa (Kohls and Rodda 1967); approximately thirty-five...finest examples known were collected at the Palabora mine, Limpopo Province, South Africa (Southwood and Cairncross...formula of iowaite using crystals from the Palabora mine. Dr. Bruce Cairncross, a consulting editor of Rocks...of Johannesburg. Volume 93, May/June 2018 271 Iowa has 74 valid species (Mindat.org; accessed March |  | | Journal (article/letter/editorial) | | Locality Index Although perhaps best known for its gypsum crystals and barite roses, Oklahoma also boasts...from Oklahoma and think primarily of the prolific gypsum crystals that are easily collected from the Great...October 2014 Mineral Index by Counties Alfalfa County Carmen, 2 mi. NE of Carmen, 1 .1 mi. W of Highway...Formation, which comprises shales and sandstones; gypsum (alabaster and satin spar) (Johnson 1972). Great...National Wildlife Refuge, sec.22, T.26N, R. 1OW: gypsum* (Crystals form singly or in clusters in sand, |  | | Report (edition) | | (formerly Stoneco, Inc.}, near Junction, Pau lding County, Ohio. Specimen is 3.8 x 2.4 cm with the largest...mining areas of "chrysanthemum stones' (a form of celestine). During May 2010, he started work in g Ernie...Huron River, resulting in the discovery of two County, Ohio, August 2006. John Medici photo. minerals...Van Doren for her steadfast work on the graphi c des ign and layout, vvl11ch included redrafting al l...ineralogical and Lap idary Society of Michigan Stark County Gem & M ineral Club Summit Petroleum, Inc. $1-$100 |  | | Book | | ....243 APPENDIX II: MINERAL SPECIES LISTED BY COUNTY ...............................248 ABOUT THE AUTHORS...beds" of sandstone, shale, and minor limestone and gypsum (all under glacial cover), which have been dated...both the Copper Country and the iron ranges by the U.S. and Michigan Geological Surveys. This resulted in...Marquette County include the Presque Isle body, the Yellow Dog body in the northern part of the county, and...Ishpeming. Several bodies also occur in Dickinson County near the mouth of the Sturgeon River. A distinctive |  | | Journal (issue) | | 1963, Geology of San Nicolas Island, California: U.S. Geo!. Surv. Prof. Paper 36'1, 65 p. \VALKER, T ...GATES U.S. Geological Survey, Washington, D.C., U.S. Geolo~ical Survey, Denver, Colorado, and U.S. Bureau...Jurassic Morrison Formation in western Montrose County, Colorado. Rock types are intergradational and...Publication authorized by the Directorii, U.S. Geological Survey and U.S. Bureau of Mines. growths include...amounts of microcrystalline quartz. In local areas gypsum cement is abundant. In an experimental study of |
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