| | Journal (article/letter/editorial) | Postcard view of the Waukon iron mine, Allamakee County, cia. 1912. John Taylor collection. ARTHUR E ...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...is courtesy of the Iowa Geological Survey. Localities by County Allamakee County Lansing, Lansing lead | | | Report (issue) | I s { IOWA ft 7 ■■• A * i . ;» \ P* A 7-. ■ «*"V ' r * < •+ ' 1 ’ T, / • k’-/ 5...i S' s I . " * • * «r- ‘ ; ' Geologist, Iowa Geological Survey ' .*4** =»*' I Paul*J. Horick...Jithill * v'v* l* Iowa Geolo^ica^Survey Educational Series 2 V . - -■' ( J Iowa Geological Survey...Educational Series 2 THE MINERALS OF IOWA by Paul J. Horick Geologist Iowa Geological Survey edited by Otto...STATE OF IOWA 1974 Library of Congress Catalog Card Number: 74-620075 Available from the Iowa Geological | | | Journal (article/letter/editorial) | January 2015 from the Warsaw Formation of Missouri, Iowa, and Illinois ARTHUR E. SMITH 9118 Concho Street...limestones of the lower Warsaw Formation where Missouri, Iowa, and Illinois adjoin each other along the Mississippi...420 ROCKS & MINERALS Van Buren ' I It Clark County LewisCounty MISSOURI b f $ x X x xx L.& -...-.L .-.- 1s x ILLINOIS -H?n!!!k-c!u!!? Adams County Figure 2. Geode locations in the Tri-State geode... and barite seemed most abundant in the Keokuk area of Iowa. However, with more collecting experience | | | Journal (issue) | have handled a few consignments from the famous Iowa and Illinois localities, which have given me an...Journal of Science, 1878, Samuel J. Wallace, of Keokuk, Iowa, in quite an article, advances a theory as to...also refer. In examining the Geological Surveys of Iowa, Illinois, and Indiana, I find mention made of geodes...in using them to further the end. The states of Iowa, Illinois, Indiana and Missouri furnish us with...and as far as I have been able to discover the Keokuk bed is the only geological for mation in which | | | Journal (article/letter/editorial) | once-in-a-lifetime opportunity,” exclaimed a collector from the Keokuk area who was working beside me splitting geodes...discusses the types of Keokuk geodes and their various inclusions found at two Lewis County, Missouri, sites...sites (fig. 2). Figure 3. Aragonite crystals on quartz in a 16-cm geode with a red chalcedony rind from...0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 General History Keokuk geodes are so named because they are found in exposures...Formation that occur in a 70-mile radius around Keokuk, Iowa (Sinotte 1969). The geodes are understood to | | | Journal (article/letter/editorial) | Sphalerite and calcite, 5 cm across, Denton mine, Hardin County. Ross Lillie specimen. +!.+!+%% 34!2+ +./8 ...chalcopyrite, and sphalerite, 12.7 cm high, Hardin County. Marv Rausch specimen. 3(%,"9 -!#/50). /5 ....and barite, 6 cm high, Minerva No. 1 mine, Hardin County. Ross Lillie specimen. Figure 5 (above right).... Barite, 12.9 cm across, Denton mine, Hardin County. Ross Lillie specimen. Figure 6 (right). Fluorite...Fluorite, 1.9 cm on edge, Minerva No. 1 mine, Hardin County. Harris Precht specimen, Terry Huizing photo. Arthur | | | Journal (article/letter/editorial) | Figure 2. Keokuk geode (7 inches in longest dimension) from Mississippian strata in southeastern Iowa. The...(This photograph,used as the cover illustration on Iowa Geology [1994], was supplied by B. F. Glenister...courtesy Patricia Lohmann, the artist who designs the Iowa Geological Survey bulletins; photograph by Tim Kemmis)...Minerals recorded from geodes of the three-state Keokuk area. Minerals whose names have no symbol after...were collected by the author and his wife in Lee County, Iowa, in 1947, plus observations of definitive | | | Journal (article/letter/editorial) | location a~ included at the end of each entry. Adair County Chariton River (40-04-05N 92-4 I -23W). septarian...septarian concretions about 2 miles north of the Macon county line. CALCITE crystals enclosing bundles of acicular...hematite, quartz (Broadhead 1873b, 1877). Audrain County Mexico, in fire clay pits and spoil piles: PYRITE...University Library] at 19:58 29 October 2014 Barton County McKarrow’s coal bank (37-37N 94-28W), 2.5 miles...PICKERINGITE, pyrite, siderite (Broadhead 1873b). Bates County Panther Creek, northwest of Rockville in coal deposits: | | | Journal (issue) | Erie Railroad station at Great Notch, 1n Passaic County. Fifty to sixty feet in depth at the steepest...of the corner truncations. Fairly abundantly. Aragonite - In aggregates of long, whitish crystals. Sparingly...quartz lens was discovered near Rice, Prince Edward County. Though small, some of the crystals were very fine...Brookneal in Campbell County and from localities west and south of Charlotte in Charlotte County. Dr. T. L. Watson...describes the occurrence of amethyst in Nelson County as follows: "Some of the veins contain quartz crystals | | | Journal (article/letter/editorial) | MINERALIZATION OF A LOCALITY IN NORTH CENTRAL MONROE COUNTY, INDIANA with reference to other Indiana localities...the (north) city limits of Bloomington, Monroe county, Indiana, on state highway 37. Here are found roadcuts...abundant quartz, dolomite, goethite, calcite and aragonite. Weathering along bedding planes, joints, and...(impunctate shell) superfamily Davidsoniacea, Orthotetes Keokuk (Hall) superfamily Enteletacea Schizophoria sp...(to breadth of 55 mm.!) Brachythyris sp. Spirijer keokuk (Hall) Spirijer sp. Syringothyris texta (Hall) | | | Journal (article/letter/editorial) | road cut along old IN-37, near Harrodsburg, Monroe County, Indiana. Note the semispherical opening, lower...Kentucky, and the Warsaw Formation in Illinois, Iowa, and Missouri. Geodes occur primarily in limestones...commercial geode mine at St. Francisville, Clark County, Missouri. This specimen appeared on the dust jacket...quartz geode, from a locality near Revere, Clark County, Missouri. Cincinnati Museum Center specimen (No...from Sheffler’s geode mine, near Alexandria, Clark County, Missouri. Fred and Sue Keitel specimen, Terry | | | Journal (article/letter/editorial) | the best known locality is in the region about Keokuk, Iowa; and almost every museum and large collection...of this region are found at cenain levels in the Keokuk limestone of the Mississippian series, that is...Mississippi River and its tributaries near Keokuk and at many places in Iowa, Illinois, Missouri and Indiana. The...often afford excellent places for collecting. The Keokuk limestone occurs typically in thick horizontal...have been found in these geodes are calcite, aragonite, galena, sphalerite, gypsum, barite, ankerite | | | Journal (article/letter/editorial) | MINERALIZATION OF A LOCALITY IN NORTH CENTRAL MONROE COUNTY, INDIANA with reference to other Indiana localities...r arf found in Devonian limestones in Jennings County. These may reach four centimeters on an edge. Masses...pseudomorphs are often coated with calcite or aragonite. Attractive specimens of these pseudomorphs on...zones are apt to be etched: some are coated with aragonite. The best specimens are found in dolomite vugs...in the Devonian limestones to the east of Monroe county and in northwestern Indiana produce some of the | | | Book (volume) | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...agate, (banded, various colors), jasper. BIBB COUNTY MACON: at Holton Quarry, 7½ mi. NWagate; N | | | Journal (article/letter/editorial) | 224, Field trips to private locations in the Keokuk, Iowa area are being conducted exclusively for Midwest...with respect to the geology and geohistory of the Keokuk area, ( 2 ) and to collect in a single weekend..."The Fabulous Keokuk Geodes." Having collected geodes for nearly twenty years in the Keokuk area. Sinotte...in which both capillary and cubic pyrite af Keokuk, Iowa. 579 habits have combined in a single crystal...that the rarest and perhaps most beautiful of all Keokuk geodes is found: the true crystalline blue chalcedony-lined | | | Report (volume) | Boston Massachusetts 02108, USA 667 Lytton A venue, Palo Alto California 94301 , USA I 07 Barry Street, Carlton...Carlton, Victoria 3053 Australia DISTRIBUTORS USA and Canada Blackwell Scientific Publications Inc. PO...directly to CCC, 27 Congress Street, Salem, MA 01970, USA. 0305-8719/ 87 /$03.00 ISBN 0-632-0 I 939-5 Library...shelf carbonates: Burlington and Keokuk Formations (Mississippian), Iowa and Illinois 237 HUDSON, J. D...of the SE Florida Shelf. Cements are acicular aragonite and peloidal high magnesium calcite. Photomicrograph | | | Journal (article/letter/editorial) | DC 20013 pohwatp@si.edu AR AGONI TE PART 1: ARAGONITE FROM WESTERN EUROPE T here are many collecting...of classic localities is aragonite, this column’s featured mineral. Aragonite is an orthorhombic mineral...mineral with point group 2/m 2/m 2/m. Aragonite occurring as untwinned crystals is rare; its normal occurrence...stalactitic. As mentioned, twinned crystals of aragonite are common. Repeated twinning on {110} yields...examples are the most familiar to collectors. Aragonite may display polysynthetic lamellae and striations | | | Journal (article/letter/editorial) | confirmation of my guess as to the rock I found in Marion County, Florida. "I say it's jasper, flint and agate....From Idaho wilderness area near Stanley in Blaine County, Idaho. Some of these come in very large xls."...that were found in the Warsaw formation, Hancock County, Illinois. These were found in geodes embedded...goethite, kaolinite, ankerite, smoky quartz, barite, aragonite, smithsonite, hematite, selenite, and sphalerite...location to collecting." IOWA — From an old quarry north of Keokuk (Lee Co.), Iowa, we have 2 rough and one | | | Journal (issue) | MINERALS How to Become A LAPIDARIST WHAT ARE KEOKUK GEODES? Discover their Hidden Treasures ROCK&GEM... 2 VOL. 52 NO. 05 • MAY 2022 14 WHAT IS A KEOKUK GEODE? 52 THE ROLE OF ROCKS AND MINERALS IN PLANT...ON THE COVER Large pink calcite crystals in this Keokuk geode are highly desired by collectors. Photo by...editor, I met Richard Gross and featured one of his Keokuk geodes in our Parting Shot. He and I reminisced...Keokuks would be just the ticket. I’ve never been to Keokuk for the formal festival that Richard describes | | | Journal (issue) | eruptive rocks from the CCVF cover an area of Park County. approximately 8500 sq. mi. including most of the...field trip headed south from Hartsel on CO 9 and County 53 Rd and noted the Antero Formation of Oligocene...further south to the club peridot claim located near County Rd. 53, The gemmy olivine comes from a rock unit..., L. A., Geology and Mineral Resources of Park County, Colorado: Colorado Geological Survey, Resource...The End October 2012 Keokuk Geodes by Ellie Rosenberg They are called Keokuk Geodes in the collecting | | | Book (edition) | NORTH DAKOTA • OHIO • MICHIGAN • NEBRASKA • IOWA WISCONSIN Digitized by the Internet Archive in... includes SOUTH DAKOTA • MICHIGAN • ILLINOIS • IOWA WISCONSIN • OHIO • KANSAS • NORTH DAKOTA NEBRASKA...46 Michigan 50 Missouri 53 j- Kansas 5Q Iowa 60 - Illinois Minerals of Illinois 69 72... June Zeitner holds a fine Targe agate from the Iowa gravel deposits. ally — sented here. many who...section dubbed the "Post Office." These well formed aragonite boxes have calcite foundations. They are of varying | | | Journal (article/letter/editorial) | other material. If the skeleton were composed of aragonite, and were replaced by calcite, the external form...Hall, from the Galena (Lower Silurian) at McGregor,Iowa, representsthe inner surface of the skeleton, and...absence of other forms is striking. In Steuben county, N. Y., the formation is a sandstone which is fine-grained...molds coated with pyrite. In the Clinton of Oneida County, N. Y., we find limonite casts. In the Trenton...(Chester, top of) (St. Louis Upper) (St. Louis) (Keokuk) Crawfordsville, Ind. Mazon Cr.., Ill. Burlington | | | Journal (article/letter/editorial) | 11, 12, 1970 Rumford Center, Me. 344 MINERALS KEOKUK GEODES - AFMS Class B2 size specimens. Beautiful...Nebraska 68507. TWINN'ED ARAGONITE CRYSTALS - On matrix, Utah; also coralloidal aragonite, Utah, 1x1" $1.50;...FAMOUS TOURMiAJLlN'ES - And micas of San Diego County. Suite of 7 different matrices 2 V2" $7.50; postpaid...Jersey. 07442. SENSATION:AL NEW BOOK The Fabulous Keokuk Geodes, by Stephen R. Sinotte, with 36 full color... etc. C. Secrist, 2219 Hershey Ave.. Muscatine, Iowa 52761. FREE CIRCULAR Country records and tape cartridges | | | Journal (article/letter/editorial) | rather complex silicates. Many collectors in the Keokuk, Iowa region pride themselves on being able to identify...better known géodes come from Keokuk, Iowa and surrounding region. The Keokuk géodes are basically quartz...fluorescence of these géodes compares well with the Keokuk type. Basically, two colors can be reported for...the matrix, there is a very fine white crust of aragonite that has a bright green fluorescence. This gallery | | | Journal (article/letter/editorial) | National City, Calif. La Jolla, in western San Diego County, is in S / W California. COLORADO — A most attractive...specimen consisting of pink rhodochrosite and white aragonite (both xled), was sent in by Crystal Gallery, 20...Colo. 80226. Its label reads: "Rhodochrosite, Aragonite. American Tunnel, Gladstone, San Juan Co., Colorado...Colorado." Gladstone, in northern San Juan County, is in S / W Colorado. "This specimen represents the...and pyrite." West Stafford, in northern Tolland County, is in N / E Connecticut. ILLINOIS — "Enclosed |
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Keokuk, Lee County, Iowa, USA