 | | Report (volume) | | 512 POTASH-BEARING ROCKS OF THE LEUCITE HILLS SWEETWATER COUNTY WYOMING BY ALFRED R. SCHULTZ AND WHITMAN...character of leucite-bearing rocks...................................... 5 G 8 The rocks of the Leucite Hills............. Composition of the minerals of the leucite-bearing rocks..................... Potash and soda...Quantity of leucite-bearing rock........................................... Pilot Butte................exposures of leucite-bearing rocks................................ Summary of available leucite-bearing rock |  | | Journal (article/letter/editorial) | | com/locate/epsl 40 Ar/39Ar chronology of the Leucite Hills, Wyoming: eruption rates, erosion rates, and an...48109-1063, USA Department of Geology and Geophysics, University of California, Berkeley, CA 94720, USA Received...1999 Abstract The lamproite lavas of the Leucite Hills, Wyoming comprise an isolated volcanic field of...years. Recent seismic studies indicate that the Leucite Hills volcanic field overlies an abrupt transition...Rise spreading ridge). The trigger for the Leucite Hills magmatism may be related, therefore, to the |  | | Journal (article/letter/editorial) | | 305-336, PIS. 37-46 SEPTEMBER 1, 1903 LEUCITE H IL L S OP WYOMING BYJ. F.KEM PANDW . C.KNIGHT* ( Read.......................... 309 The twenty-two Leucite hills ...................................................................................318 North Pilot mesa..............................................321 Volcanic necks and dikes southeast of North Pilot mesa..................................... 321 Wortman..................................... 321 Iddings butte and dike....................................... |  | | Book | | Prairie Creek 3.2.2. Group Name: Leucite Hills 3.2.3. Group Name: Smoky Butte 3.2.4. Group Name: Francis 3...Group Name: Hills Pond 3.2.6. Group Name: Sisimiut 3.2.7. Group Name: Yellow Water Butte 3.2.8. Group...Group Name: Froze-to-Death Butte 3.3. European Lamproites 3.3.1. Group Name: Murcia-Almeria 3.3.2. Group...Lamproite Type-Locality Magmatic Fields 4.4.1. Leucite Hills 4.4.2. West Kimberley 4.4.3. Murcia-Almeria...Mineralogy of Lamproites 6.1. Phlogopite 6.1.1. Paragenesis 6.1.2. Leucite Hills, Wyoming 6.1.3. West Kimberley |  | | Journal (article/letter/editorial) | | sanidine rocks similar to those found in the Leucite Hilis of Wyoming, about 150 miles to the northeast and...inaccessible)in underground workings of the Park city mining district (Boutwell, 19i2). Through the generosityof...RSE. wst-16, underground workings, Park City mining district (see Boutwell, 1912). WC-2, head of Whites...the specimens (such as WC-2), phenocrysts of phlogopite are clearly visible in a gray-brown aphanitic...smaller,randomly oriented flakes of phlogopite. The phenocrysts of phlogopite are fairly euhedral with pleochroic |  | | Journal (article/letter/editorial) | | Phases in a Potassium-Rich Lava from the Leucite Hills, Wyoming Michael Barton and Manfred J. van Bergen...wyomingite lava from Hatcher Mesa, Leucite Hills, Wyoming. Al-rich phlogopite (16-21% A1203), apatite, F e...Ti-oxide and amphibole) in the genesis of the Leucite Hills magmas cannot be elucidated on the basis of...phases 1 (phlogopite, olivine and orthopyroxene) occurring in the lavas of one locality - the Leucite Hills...Hills, Wyoming. The results of this study provide strong evidence that the presence of these phases in the |  | | Report (issue) | | lava occurring extensively in the Leucite Hills in Sweetwater County, Wyo.,t is composed largely of the...mineralleucite, a silicate of alumina and potash. Leucite is far richer in potash than feldspar, which is...prospective sources of potash. Moreover, the potash in leucite, although not soluble in water, seems to be more...wyomingite, such as occurs in many of the mesas and hills of this region. MINERAL COMPOSITION OF WYOMINGITE...Uncombined silica, 22.5 per cent; leucite, 35.7 per cent; phlogopite, 22.3 per cent; diopside, 10.7 per |  | | Journal (article/letter/editorial) | | Petrogenesisof the ultrapotassicrocks from the Leucite Hills, Wyoming S. M. KunuNER,' A. D. Eocan.nNo M. ARrue...Abstract The ultrapotassicrocks of the Leucite Hills, Wyoming consist of silica-undersaturated madupites;...analysesof the rocks and their major minerals, phlogopite-rimmed olivines, some of the spinel group minerals...melting. By fractionation of olivine, diopside and phlogopite, an olivine orendite cumulate may be produced...best known examples being those of the Leucite Hills, Wyoming; Jumilla, Spain; the West Kimberley region |  | Vollmer, R., Ogden, P., Schilling, J. -G., Kingsley, R. H., Waggoner, D. G. (1984) Nd and Sr isotopes in ultrapotassic volcanic rocks from the Leucite Hills, Wyoming. Contributions to Mineralogy and Petrology, 87 (4) 359-368 doi:10.1007/bf00381292 | Journal (article/letter/editorial) | | in ultrapotassic volcanic rocks from the Leucite Hills, Wyoming R. Vollmer*, P. Ogden, J.-G. Schilling...Pleistocene volcanic field of the Leucite Hills, Wyoming. All Leucite Hills rocks have negative eNd signatures...between magma sources from each volcanic centre (butte or mesa). The relationship between the madupite...perhaps taking place during the stabilization of the Wyoming Craton 3.2 to 2.5 Gyr ago but not later than 1...material into the mantle. The importance of the Leucite Hills ultrapotassic rocks to this problem lies in |  | | Report (chapter) | | Pleistocene flows and the Recent volcanics of the Leucite Hills, Wyoming, and Gaussberg, Antarctica, respectively...characterized by the general presence of phlogopite, diopside, leucite and K-richterite, occasional glass,...incompatibleelement-enriched phases, such as phlogopite and apatite, most probably as a result of some...lamproite revolution. sitions of rocks from the Leucite Hills, W y o m i n g , and SE Spain, a n d included...proportions of both K and A1 include sanidine, biotite, leucite and rare kalsilite; the molar ratio K/A1 is nearly |  | | Journal (article/letter/editorial) | | Hopi Buttes, Arizona (8), 0.7038 0.7094; Leucite Hills, Wyoming (17), 0.7055--0.7070; Montana diatremes...each locality are given in parentheses : 1. Leucite Hills, W y o m i n g (Cross, 1897; K e m p and Knight...NavajoProvince,Arizona-New Mexico 81 4 LeucReHilJs,Wyoming . . . . . . 0'720 SrS~Sr8G Fig. 1, His~ogram...Type Locality SrST/SrS~ Rb Sr Rb/Sr Leucite Hills, Wyoming 64-67 64-68 64-70 64-72 64-74 64-75 64-76...Mesa Pilot Butte Boars Tusk Badgers Teeth N. Table Mr. Nr. N. Table Mt. S. Table Mr. Iddings Butte Black |  | | Journal (article/letter/editorial) | | Shcherbakovite in leucite phlogopite lamproites from the Leucite Hills, Wyoming POTASSIUMbarium titanosilicates...apatite, amphibole and sanidine. Emmons Mesa, Leucite Hills, Wyoming. minerals, known from only four localities...4.110 1,2 Emmons Mesa, Leucite Hills, Wyoming (this work); 3,4 Walgidee Hills, West Kimber|ey (Jaques...shcherbakovite from the Leucite Hills, Wyoming, U.S.A. The Leucite Hills of Wyoming (Cross, 1897) consist...of potassic lavas which are currently termed phlogopite lamproites (Mitchell and Bergman, 1991). Shcherbakovite |  | | Journal (article/letter/editorial) | | Water-Saturated Melting Relations to 5 Kilobars of Three Leucite Hills Lavas M. Barton* and D.L. Hamilton Department...relations of three Leucite Hills lavas have been determined at pressures up to 5 kb. Phlogopite is the major...liquidus phases in madupite at pressures up to 5 kb. Leucite is a liquidus phase in all three magmas at pressures...inferred crystallization sequences for the Leucite Hills lavas and have applications to the crystallization...potassium-rich lavas. Evidence from the Leucite Hills, Wyoming, includes the highly vesicular character |  | | Book | | K. Gupta Kenzo Yagi Petrology and Genesis of Leucite-Bearing Rocks With 99 Figures and 43 Tables Springer-Verlag...Includes bibliographical references and index.!. Leucite. 2. Petrology. 1. Yagi, Kenzo, 1914- joint author...dominated by mafic and ultramafic rocks containing leucite. Its occurrence is very restricted as compared...are discussed. Phase equilibria studies on many leucite-bearing ternary, pseudoternary, quaternary, and... Survival of leucite and formation of pseudoleucite is discussed in Chapter 13. Leucite-bearing synthetic |  | | Journal (article/letter/editorial) | | volcanic rock consisting essentially of y melilite, leucite, olivine, and a little phlogopitic biotite, which...regarded as an outlying part of the Vulsinian district of the Roman petrographic province. The rock was...rock which is richer in biotite. Melilite and leucite are the chief minerals of the body of the rock...uneven surfaces due to interference by marginal leucite. The larger laths have optically positive euhedral...properties of the outer shell of the larger ones. Leucite is uniformly distributed in euhedral or rounded |  | | Journal (article/letter/editorial) | | CRUSTAL XENOLITHS FROM THE HATCHER MESA LAMPROITE, WYOMING, USA: INSIGHTS INTO THE COMPOSITION OF THE DEEP CRUST...CRUST AND UPPER MANTLE BENEATH THE WYOMING CRATON Hassan MIRNEJAD§ Department of Geology, Faculty of...entrained in the Hatcher Mesa lamproite, Leucite Hills, in Wyoming, consist of ultramafic, mafic and felsic...accretion of the thinned, southern part of the Wyoming craton. Although the host lamproite and the xenoliths...parental magmas originated from the underlying Wyoming mantle. It seems likely that the melting events |  | | Journal (article/letter/editorial) | | Relationships of a Madupite From the Leueite Hills, Wyoming, to 30 Kb Michael Barton* and D.L. Hamilton...as shown by chemical analysis) from the Leucite Hills, Wyoming, have been studied at pressures up to 30...30 kb. At low pressures (< 5 kb) leucite is the dominant liquidus phase, but it is replaced at higher... olivine and probably clinopyroxene to yield phlogopite. Apatite is stable within the melting interval...little effect on the composition of the pyroxene.. Phlogopite is also aluminium-poor and has only a moderate |  | | Journal (article/letter/editorial) | | the wolgidites, fitzroyites a n d cedricites (leucite lamproites) of the West Kimberley area range in...in composition from titaniferous phlogopite to titaniferous tetraferriphlogopite. Two distinct compositional...characterized by distinct mica TiOz contents. The phlogopite compositional trends at low pressures are very...Lamproites The numerous plugs, sills and dikes of leucite lamproite which occur in the Fitzroy Basin of the...pblogopite-diopside-Ti-richterite-leucite lamproite fitzroyite : phlogopite-leucite lamproite cedricite: diopside-Ti-richt |  | | Report (issue) | | PETROGRAPHY AND PETROLOGY OF SMOKY BUTTE INTRUSIVES GARFIELD COUNTY, MONTANA 0 ROBERT E. MATSON B.A...11 SMOKY BUTTE .................. 12 EXPOSURE I .................. l£ TOP CONTACT BUTTE .................. 16 RADIAL DIKE BUTTE ............... 16 EXPOSURE (6) 17 ................. ii iii \...BULL SNAKE KNOB ................ 17 INSTRUMENT BUTTE (19) ............. 17 .......................... 20 SHIP ROCK ................... 20 SMOKY BUTTE DIKE EXTENSIONS .......... 21 LIGHT GRAY DIKES |  | | Book | | J. Wyllie, (California Institute of Technology, USA). Preface In this book the author attempts to...Physico-chemical constraints for the crystallization of leucite and melilite, their P-T stability together with...pseudoleucite and the problems related to survival of leucite beyond Tertiary due to analcitization are discussed...Incompatible relationship between the mineral pairs, leucite and sodic plagioclase and occurrence of the former...understood from the study of the systems leucite–albite and leucite–albite–anothite under atmospheric pressure |  | | Journal (article/letter/editorial) | | September, 1939 Vol. XXV Some minerals from the leucite-rich rocks of the West Kimberley area, Western...potassium-zirconinm silicate. (3) Titaniferous phlogopite. Field occurrence. The leueite-bearing rocks...minerals noted in this suite of rocks were leucite, phlogopite, diopside, katophoritic amphibole, futile...r i b e d . TABLE I. Chemical analyses of some leucite-lamproites from the West Kimberley area, Western...Diopside-phlogopite-magnophorite-leucite-lamproite. Analyst, C. R. Le Mesurier. II. Phlogopite-leucite-lamproite |  | | Journal (article/letter/editorial) | | Their unusual experimentally for a sanidine phlogopite lamproite from North isotopic and geochemical...features are believed to be Table Mountain, Leucite Hills, Wyoming. The lamproite is inherited from their...experimental stumagmas which were parental to the Leucite Hills volcanic field. dies of lamproitic compositions...sources. However, it is proposed that sanidine phlogopite multiple saturation with minerals present in...origin of the magma. This method of determining of phlogopite, K—Ti-richterite, K-Ba-phosphate and K-Tithe |  | Cullers, R.L., Dorais, M.J., Berendsen, P., Chaudhuri, S. (1996) Mineralogy and petrology of cretaceous subsurface lamproite sills, southeastern Kansas, USA. Lithos, 38 (3) 185-206 doi:10.1016/0024-4937(96)00010-2 | Journal (article/letter/editorial) | | subsurface lamproite sills, southeastern Kansas, USA R.L. Cullers a, M.J. Dorais b, P. Berendsen ‘, S...66506-3201, USA b Dep. of Geological Sciences, Indiana University, Bloomington, IN 47405, USA ’ Kansas Geological...Geological Survey, Lawrence. KS 66405, USA Received 10 May 1995; accepted 15 March 1996 Abstract Cores...country rock and cross-cutting veins composed of phlogopite, K-Ti richterite, titanite, diopside, K-Ti silicates...magmas similar in composition to higher silica phlogopite-sanidine lamproites some believe to be primary |  | | Journal (article/letter/editorial) | | Coexisting glasses occurring as inclusions in leucite from lamproites: examples of silicate liquid immiscibility...occurring in leucites from the Oscar and Zirkel Mesa leucite lamproites consist of high (>10 wt.%) and low (<4...immiscibility shown by glass in alkaline rocks. KEYWORDS: leucite, inclusions, glasses, lamproite, silicate liquids...microscopic scale. It has long been recognized that leucite crystals characteristically contain small inclusions...excitation of the enclosing leucite. In this work, examples of glass inclusions in leucite are described from |  | | Journal (article/letter/editorial) | | Ferric-ferrous ratios, H2O contents and D/H ratios of phlogopite and biotite from lavas of different tectonic...ferrous iron, H2O contents and dD values for 16 phlogopite and biotite and 2 hornblende separates are presented...from volcanic rocks from four localities: (1) phlogopite phenocrysts from minette lavas from the western...andesite lavas from Mono Basin, California, (3) phlogopite and biotite from clinopyroxenite nodules entrained...Uganda, and (4) phlogopite phenocrysts from a wyomingite lava in the Leucite Hills, Wyoming. The Fe2O3 contents |
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