| | Journal (article/letter/editorial) | Postcard view of the Waukon iron mine, Allamakee County, cia. 1912. John Taylor collection. ARTHUR E ...Houston, Texas 77036 mineraldesign @aol.com owa. ;t state with only sedimentary rocks exposed on the surface...and rock outcrops are scattered throughout the state and have produced many specimens for active collectors...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 |
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