 | | 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 ...Johannesburg PO Box 524, Auckland Park 2006 Johannesburg, South Africa brucec@uj.ac.za I T HAPPENS FROM TIME TO...1,000–1,500 feet below the surface in Sioux County, Iowa (Kohls and Rodda 1967); approximately thirty-five...known were collected at the Palabora mine, Limpopo Province, South Africa (Southwood and Cairncross 2017)...formula of iowaite using crystals from the Palabora mine. Dr. Bruce Cairncross, a consulting editor of Rocks |  | | Journal (article/letter/editorial) | | 20513 pohwatp@si.edu FLUORITE Elmwood Mine, Carthage, Smith County, Tennessee R egular readers of this...shade of purple, but it also can be blue, blue-black, red, pink, green, yellow, brown, and colorless...sphalerite, 8.8 cm high, from the Elmwood mine, Smith County, Tennessee. Note the gemmy corners of the...pieces are all from the fluorspar district, Hardin County, Illinois. Cincinnati Museum Center specimens,...dolomite, siderite, sphalerite, cerussite, pyrite, marcasite, talc, hemimorphite, smithsonite, and goethite |  | | Journal (article/letter/editorial) | | Mineralization and Minor Base Metal Mineralization in Iowa, Wisconsin, and Illinois KEITH B. KUTZ AND PAUL...AtmosphericSciences, 253 ScienceI, Iowa StateUniversity,Ames,Iowa 50011 Abstract Minor basemetal occurrencesare...mainUpper Mississippi Valley zincleaddistrictin Iowa, Wisconsin, andIllinois.Theseoccurrences are of...Outlyingbasemetaloccurrences containmainlypyrite,marcasite, sphalerite,galena,andcalcite; they occurin a...inclusiondata (1) to determine nor base metal occurrencesin Iowa, Wisconsin, and the geochemicalconditionsunder which |
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