 | | Book (volume) | | 000 specific locations in Idaho, lowa, Kansas, Minnesota, Missouri, Montana, Nebraska, North Dakota, ... — ; Oregon, South Dakota, Washington, and Wyoming ~ AllanW Eckert b i or d , Digitized by...NORTHWESTERN QUANDRANT Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, North Dakota, Oregon...Oregon, South Dakota, Washington, and Wyoming VOLUME 4: THE SOUTHWESTERN QUADRANT Arizona, Arkansas...The Northwestern Quadrant Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, North Dakota, Oregon |  | | Journal (article/letter/editorial) | | University of Washington, Seattle, WA 98195-1310, USA; bwevans@uw.edu (B.W.E.); kuehner@uw.edu (S.M.K.)...observed. In samples from the Duluth Complex (Minnesota, USA) containing igneous olivine Fa36–44 , a continuous...ferroan–olivine-bearing samples from the Laramie Complex (Wyoming, USA) show a compositional variability of secondary...for hisingerite, greenalite, cronstedtite, and minnesotaite reported by Blanc et al. [36], or, in the case...from the layered mafic Duluth igneous complex (Minnesota, USA). Spot analyses of the phyllosilicates illustrated |  | | Report (issue) | | Chlorite (excluding chamosite) _______________ Minnesotaite. ______________________________ Stilpnomelane_...analyses of glauconite.________ 6. Analyses of minnesotaite, stilpnomelane, 8 thuringite, and bavalite_...converted into thuringite and other chlorites); minnesotaite, and stilpnomelane; and pyrite and marcasite...glauconite, and greenalite. Thuringite (bavalite), minnesotaite, and stilpnomelane are of common occurrence...of the probable mixture of the material with minnesotaite, which at that time had not been defined. Greenalite |  | | Journal (issue) | | author who resides at 2100 Arcade Street, St. Paul, Minnesota. 219 FLUORESCENCE Paul F. Elarde Our author...snowclad Teton M intains in the background Taken in Wyoming, 20 miles below the ‘South Gate’ of the Yellowstone...should be forsent edito Ben Hur Wilson, 406 Grover St., Joliet, Illinois The Earth Company makes everyScience...Mosaic Museun Joe Phetteplace Tumbler Idea: St. Paul, Minnesota Earth Science Editor: Knowing that you seem...was discovered near what is now the Mountain Iron Mine on November 16, 1890. Since then about two billion |  | | Journal (article/letter/editorial) | | States are in the Lake Superior region, in Minnesota, Wisconsin, and Michigan. Thinner units occur...many northern Rocky Mountain uplifts in Montana, Wyoming, and South Dakota, and in the southwesternstates...dolomite,whereas in the Wind River Mountainsof Wyoming, the iron-formationis interbeddedwith schistand...Montana, State Surveysof Minnesota,Wisconsin,and Michi"Geologyof the Wyoming, and South Dakota. A few...iron-formationalsooccurin older rocks, both in Minnesota and Michigan, but the relative agesare uncertain |  | | Journal (article/letter/editorial) | | Fe system. creasing temperature: greenalite, minnesotaite, The probablereactionsin this system,listed...4SiOa = 2FeaSi40•0(OH)a+ 2HaO greenMite quartz minnesotaite vapor (2) 7FeaSi4010(OH)2= 3FeTSi8Oa=(OH)a +...Floran and Papike,1978), and quartz-helnatite-minnesotaite has also been reported (Gundersenand Schwartz...3HaO vapor (7) FeaSi•O10(OH)2+ «02 : FeaO• + minnesotaite vapor magnetite (8) Fe6Si•O•0(OH)s + O2 = 2FeaO•...canbe seenthat the favorability for magnesiumis minnesotaite> grunerite > opx _> greenalite> fayalite. Since |  | | Book | | o f Geology, Memorial University of Newfoundland, St. Johns, Newfoundland A1B 3 x 5 , Canada. A.D.T....W.D.M. HALL Broken Hill Proprietary Co. Ltd., 37 St. Georges Terrace, Perth, Western Australia 6000,... G.B. MOREY Minnesota Geological Survey, 1 6 3 3 Eustis Street, St. Paul, Minnesota 55108, U.S.A. ...volcanic, or metasedimentary rocks”. The local Minnesota name “taconite”, earlier used as a synonym of...of Economic Geologists and the University of Minnesota. No explicit analysis of nomenclatural problems |  | | Journal (article/letter/editorial) | | occurrences. These localities have been listed by county; and, strictly for convenience, the list has been...None theless, with the aid of a good state or county map, plus local inquiries, the list could be helpful...micromounting PENINSULA Wayne County International Salt C o . mine—Detroit Alpena County National G y p s u m...dolomite, marcasite, pyrite, quartz, sphalerite Eaton County anhydrite, carnallite (r), celestite, dolomite... palygorskite, pyrite, quartz, sphalerite Spurr mine—Imperial Heights (near Michigamme) clinochlore var |  | Frost, C. D., von Blanckenburg, F., Schoenberg, R., Frost, B. R., Swapp, S. M. (2007) Preservation of Fe isotope heterogeneities during diagenesis and metamorphism of banded iron formation. Contributions to Mineralogy and Petrology, 153 (2) 211-235 doi:10.1007/s00410-006-0141-0 | Journal (article/letter/editorial) | | Geology and Geophysics, University of Wyoming, Laramie, WY 82071, USA e-mail: frost@uwyo.edu F. von Blanckenburg...Formation extends for 190 km across northern Minnesota. It is separated from the correlative, 1.9 Ga...siderite, greenalite, and locally, hematite and minnesotaite. Layering occurs on the scale of millimeter...(Andrews and Ripley 1989). At these pressures, minnesotaite forms by reaction of greenalite with quartz... Fig. 4] at around 160C. Because Mg favors minnesotaite over greenalite, this is the high-temperature |  | | Report (issue) | | and obtained his M.S. from the University of Minnesota in 1919 and Ph.D. from the same institution in... He stayed on the staff at the University of Minnesota and became Professor Emeritus in 1959. With all...amosite was not a chlorite (1944); and discovered minnesotaite (1944). He took on difficult Vil Vill B...the Department of Geology at the University of Minnesota talk of his value as a walking library or source...graduate student field trip of the iron ores of Minnesota. He enthusiastically agreed to let me go on the |  | | Journal (article/letter/editorial) | | Canada Sweden Sweden USSR Canada Canada Canada USA 1 2 3 4 5 6 7 8 9 iO ii 12 >60 24 ...37.2 Fe 4.57 0.80 3 Irelan 47.5 aLs,tLs Hm/CI,St Cht,Cal 27.4 1.00 57.8 4 Norway i0 cSc,cSc...6 .... 19 USA 230 Cg,fLs Mn,Gn,St Cht,Cal 46 4 0.90 18.7 19.7 0.63 2.98 20 USA 153 sMu,tMu...tMu Sd,Mn,St Cht 28 8 2.19 21 USA 46 pSl,pSl Mg,St,Sd Cht,Cly 3 7 .... 64.8 Fe ........ 22...22 USA 198 Sc,Unc Mg,Ma,Hm Cht,Cal 44 6 0.16 35.6 Fe 0.92 O.21 23 USA 274 Qz,pSl Sd,Mg,Hm |  | | Journal (article/letter/editorial) | | Iron Formation Near Atlantic City, Fremont County, Wyoming DOUGLAS E. Pmi)E A•D ARTHUa F. HAGNER Abstract...Precambrian iron formation near Atlantic City, Wyoming, lies within a large southwestward-plunging synclineof...suggestedthat the iron formation at Atlantic City, Wyoming, may have been derived through subaerial weathering...Two units of iron formation are present:a lower Wyoming. The mineralogyand geochemistry of the deposit...overlainby more than 400 feet schist, of Lander, Wyoming, occupying the northwest of biotite-garnetschist |  | | Report (volume) | | studies TEXTURES IN SERPENTINITES CASSIAR ASBESTOS MINE Serpentine textures and their distribution TRANSITIONS...talc Talc in high-pressure rocks Parageneses of minnesotaite 280 280 ACKNOWLEDGMENTS REFERENCES Chapter...Parsettensite Bannisterite Strip structures Minnesotaite Ganophyllite Gonyerite xii 707 710 IDENTIFICATION...o + ois ss | «A . . io e eec iae &OlmKe «St ee | ‘“s[Teqep r0F "6 - . 4xeq ‘q FINO SeTQTOTpotieg...in China. A major source of that material was a mine at Kauling, Kiangsi Province (Grim, 1968), which |  | | Journal (article/letter/editorial) | | Fe were producedfrom taconiteand jaspilite in Minnesota ORIGIN OF PRECAMBRIAN IRON FORMATIONS 1027... Ref. Iron Early Vermilion, Precambrian Minnesota 54.1 (Keewatin) Ruth Range, Michipicoten, 2500...member (82• Table 1). 2. Main Mesabi district• Minnesota• position computedby Gr•er average com- (32•...constituents constituents. computed and 10 Minnesota, compubedfrom 70 Fe, SiO• AleO•, 6 analyses...HEMATITE IRON FORMATIONS FROM MINNESOTA AND QUEBEC Mesabi district t Minnesota Mag. I.F. Hem. I.F. 29 |  | | Book (volume) | | Iowa to 3,500’ along the western boundary with Wyoming. In the far western counties of Lawrence, Meade...instance, a single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds |  | | Journal (article/letter/editorial) | | subsequentdiagenesis,thesegave way to stilpnomelane and minnesotaite, respectively, with occasionally a little chlorite...rock with localminor BIFI concentrationsof minnesotaite, carbonate, hematite, and riebeckite (both...down the shalzonesnow essentiallycomposed of minnesotaite and low depositional basinwall. As discussed...prominent"shale"macrobands S2 microscope and S3, minnesotaite and chloritepredominate in Startingmaterialsfor...degenerate"beetle" fiber left. Essential component is minnesotaite and flaky or semi-rolled greenalite. Other phases:maghemire |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA |  | | Journal (article/letter/editorial) | | SVOP Helen SVOP Outerring DWAT Savant Lake INT2 Lake St. Joseph SVOP Pickle Crow INT3 Seminoe INT3 Nova Lima...in thesemineralstypisiderite,stilpnomelane, minnesotaite, grunerite,py- cally alternate with recrystallizedchert...d formsBetweenquartz- Archean volcanic ashof Minnesota (Lavery,1972) sand-rich coastsand offshore areas...has examined COSP-IF ironstoneat the La Chapacoal mine near pected. Precambrian coalis similarlyscarce(TyIer...Israel Program Sci. Translation [Jerusalem], Iron County, Michigan: U.S. Geol. Survey Bull. 1077, 266 p |  | | Journal (issue) | | Maryland. Printing is by Columbia Planograph Co., 52 L St., N.E., Washington, D.C. departments Editorial P......................2 5 9 “New Minerals from Mont St. Hilaire, Quebec” by Agos, Richerson and Regis —...rin o and Guy P e rra u lt “New Minerals from Mont St. Hilaire, Quebec” — A Reply to the Discussion......Regis and D avid R icherson “New Minerals from Mont St. Hilaire, Quebec” - Further Discussion.............at Bowie, Md. VANADINITE from the Apache Mine, Gila County, Arizona. The largest crystals in the group |  | | Journal (article/letter/editorial) | | assemblage DEPARTMENT OF GEOLOGY '[.JNIVERSITY OF WYOMING L^i•^Mi•, WYOMINC 82071 is not at all rare. In...diagram Minnesota: ß 1978, Mineralogy and petrology of the Gunflint Iron Formation, Minnesota-Ontario:...Klein, C., 1974, Greenalite, stilphonelane, minnesotaite, crocidolite and carbonates in a very low-grade |  | | Journal (article/letter/editorial) | | chloride mineral frorn the 934 Mamrnothmine, Pinal County, Atizona, Dunn, P.J., C.A. Francis, R.A. Ramik'...J. Innes: Wiserite, an occurrence at the Kornbat mine in Namibia, and new data, r374 Dunn, P.J., see...in the Potash Sulphur Sprlngs complex, Garland County, Arkansas, I32 Helffrich, G., B. hrood:Subregular...Maloin Ranch pluton, Laramie Anorthosite Complex, Wyoming: Petrology and 307 mixing relations, Konnert, J...dolomites and associated carbonates from the Warynski mine, Poland: An AEMinvestigation, 46r Ross, C.R., II: |  | | Journal (article/letter/editorial) | | (1971) ROBIE and WALDBAUX (1068) GABBEX.Sand CKRI~ST (1966) ROBIE and WILDBAUX (1068) GABREUIand CHRIST(1066)...SILICATES Gibbs energy data are available only for minnesotaite, the ferrous equivalent of talc. As before,... However, the pure ferric silicates, ferric minnesotaite and ferric greenSiOB and H,O, should be slightly...data of WEAVER et al. (1971) for t.he Colony, Wyoming montmorillonitc are used. Our method is essentially...Kaolinite Pyrophyllita Muscovite Paragonite Minnesotaite - 1320.0 -9650 MgsSi,Gs(GH), - 1020.5 kIg$is%(GH) |  | | Catalog/List | | _S)_O_H_C_l_ _ _ _ _ _on tin ingots on a ship wreck in 1885 St Ives, Com\~'!!_!!,_~gl~nd____ 2 AEGIRINE Very rich...Greenish, sparse, acicular micros in Penberthy Croft Mine, St 1cm £4 s AGARDITE Y Ca Cu As_O_O_H_____c_a_v_iti_e'-s-'in'-'-...215 69 3 11 Rich white crusts on matrix. Rawhide Mine, Mohave ½x½£3 _P_b_S_iO_13 _ _ _ _ _ _ _ _ _ _ _...Hornblende ALLANITE Black areas in actinolite Bastnas Mine Sweden lxl £1.20 CeYFeSiO Quite attractive blue-grey...Grey veins in and on matrix, some with Fallowfield mine, Ix½ ALSTONITE BaCaCO/3 Alstonite micros. Hexharn |  | | Journal (article/letter/editorial) | | the Technical Program: RAYMOND E. PECK Exhibits: Louis F. DELLWIG Field Trips: DANIEL F. MERRIAM and GARY...Harold Walter Kopp, Otto Charles Krinitzsky, Ellis Louis Lachenbruch, Arthur Herold McFarlan, Edward, Jr...Moore, James Gregory Moxham, Robert Morgan Moyd, Louis Mrose, Mary Emma Peck, Ralph Brazelton Peters,...Helen Bothner, Wallace Arthur Bottino, Michael Louis Members elected in April Alexander, Roger G., Jr...Darrell, James Harris, II DeMar, Robert Eugene Dixon, Louis H. Dorheim, Fred Houge Drohnyk, John Wendel Dudley |
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