 | | 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 |  | | 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.......................................... Cross Mesa. .................... ^.................................... Osborn Mesa............ |  | | Journal (article/letter/editorial) | | GEOCHEMISTRY OF CRUSTAL XENOLITHS FROM THE HATCHER MESA LAMPROITE, WYOMING, USA: INSIGHTS INTO THE COMPOSITION OF...OF THE DEEP CRUST AND UPPER MANTLE BENEATH THE WYOMING CRATON Hassan MIRNEJAD§ Department of Geology,...xenoliths entrained in the Hatcher Mesa lamproite, Leucite Hills, in Wyoming, consist of ultramafic, mafic...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) | | Phases in a Potassium-Rich Lava from the Leucite Hills, Wyoming Michael Barton and Manfred J. van Bergen...a wyomingite lava from Hatcher Mesa, Leucite Hills, Wyoming. Al-rich phlogopite (16-21% A1203), apatite...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 |  | | 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 .................................................................................. 311 Zirkel mesa....................................................................................... 314 Emmons mesa....................................................................................... 316 Osborn mesa................................................ |  | | Book | | Group Name: Prairie Creek 3.2.2. Group Name: Leucite Hills 3.2.3. Group Name: Smoky Butte 3.2.4. Group...Group Name: Francis 3.2.5. Group Name: Hills Pond 3.2.6. Group Name: Sisimiut 3.2.7. Group Name: Yellow Water...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...Kapamba, Zambia 6.1.9. Sisimiut, Greenland 6.1.10. Hills Pond-Rose Dome, Kansas 6.1.11. Bobi, Ivory Coast |  | | Journal (article/letter/editorial) | | Na-Fe-Ti oxide in ultrapotassic lavas from the Leucite Hills, Wyoming MICHAEL BARTON Department of Geology and...The Ohio State University, Columbus, Ohio 43210, USA Abstract The occurrence and mineral chemistry of...an N a - F e - T i oxide in lavas from the Leucite Hills are reported. Magnesian ilmenite and apatite...and High Field Strength elements, together with phlogopite in the upper mantle source regions of ultrapotassic...of the Leucite Hills lavas. KEYWORDS: xenocrysts, apatite, ilmenite, ultrapotassic lavas, Leucite Hills |  | | Journal (article/letter/editorial) | | Australia Significance of the Pyroxene Chemistry from Leucite-Bearing and Related Assemblages A. Cundari and...of the pyroxene from representative suites of leucite-bearing and related assemblages occurring in south-west...is the dominant constituent of mafic to felsic leucite-bearing assemblages, where it accommodates wide...experimentally from an anhydrous leucitite from the Alban Hills, Roman Region, shows decreasing Ti and Fe 3+ (calculated)...a hydrous Ugandan "mafurite" (clinopyroxene + phlogopite + olivine + kalsilite) show a systematic inverse |  | | 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 |  | Semiz, Barış, Çoban, Hakan, Roden, Michael F., Özpınar, Yahya, Flower, Martin F.J., McGregor, Heath (2012) Mineral composition in cognate inclusions in Late Miocene–Early Pliocene potassic lamprophyres with affinities to lamproites from the Denizli region, Western Anatolia, Turkey: Implications for uppermost mantle processes in a back-arc setting. Lithos, 134. 253-272 doi:10.1016/j.lithos.2012.01.005 | Journal (article/letter/editorial) | | GA-30602, USA d Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, USA b a r...host-lamprophyres with lamproitic affinity in Kocapınar district (Denizli), Western Anatolia, consist of phlogopitic...lamprophyres: clinopyroxene-rich (CCI) and clinopyroxene–phlogopite-rich (CPCI). Whole-rock compositions of inclusions...crystallized from magmas formed by melting of phlogopite-bearing pyroxenites in a peridotitic mantle source...as their host lamprophyres from the Kocapinar district from the Denizli region, 254 B. Semiz et al |  | | 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 |  | | Book | | particularly since the commencement of the very lucrative mining of the Palabora carbonatite for copper, and a host...by-products, and it is the exploration efforts of mining companies that have led to the discovery of many...by Nicholls et al. (1982) i nclude modal leucite and leucite plus nepheline. These rocks contain olivine...of olivi ne, plagioclase, pyroxene, opaq ues, leucite and nepheli ne. One of five hawaiites studied contains...to 2.5 cm in diamter, which were thought to be leucite, were reported to occur where Horsefly Creek meets |  | | Book | | 3. Boshof District . . . 1.8.3.1. Roberts Victor 1.8.3.2. New Elands 1.8.4. Winburg District ... 1.8.5...Kroonstad District .. 1.8.6. Swartruggens District. 1.8.7. Dokolwayo .. 1.8.8. Prieska District 1.8.9. Summary.... . .. 4.2.4. Phase Relations in the System: Phlogopite-Potassium Richterite-Apatite . . . . . . . ....Peridotite . . 4.3.1.3. Partial Melting of Carbonated Phlogopite Lherzolite . . . . . . . . . . . . . . . . ....recognizable on the basis of the dominance of olivine, phlogopite, and calcite in their modes. These were kimberlite |  | | Journal (article/letter/editorial) | | mineralization in the Bear Lodge carbonatite, Wyoming: Mineralogical and isotopic evidence Meghan Moore...b University of Manitoba, Canada Carlisle, MA, USA a r t i c l e i n f o Article history: Received...xxxx Keywords: REE Carbonatite Bear Lodge Black Hills Mineral deposit Farallon crust a b s t r a c t...Bear Lodge alkaline complex in northeastern Wyoming (USA) is host to potentially economic rare-earth...Lodge alkaline complex (BLAC) in northeastern Wyoming, USA since 1949 (Staatz, 1983). Resurgence in exploration |  | | Journal (article/letter/editorial) | | and later Mo ore-forming stages at Bingham Canyon, USA, demonstrate a common metal source. Uranogenic Pb...early Proterozoic amalgamation of terranes to the Wyoming Craton provides the metal endowment and subduction...Butte, and Bingham Canyon) occur in the western USA within less than 1% of the Earth's land surface (Singer...Mo deposits in the eastern Rocky Mountains of the USA are derived from anciently metasomatized subcontinental...suture between Archean crust to the north (the Wyoming Province) and juvenile, accretionary, arclike, |  | | Report (volume) | | Boston Massachusetts 02108, USA 667 Lytton Avenue, Palo Alto California 94301, USA 107 Barry Street, Carlton...Carlton Victoria 3053, Australia DISTRIBUTORS USA and Canada Blackwell Scientific Publications Inc PO Box...directly to CCC, 27 Congress Street, Salem, MA 01970, USA. 0305-8719/87 $02.00 British Library Cataloguing...kimberlite clan: relationship with olivine and leucite lamproites, and inferences for upper-mantle metasomatism...Trans-Pecos Texas 415 EBY, G. N. The Monteregian Hills and White Mountain alkaline igneous provinces, eastern |  | | Book | | (Novosibirsk) International Treasurer: H.O.Meyer (USA) Local Treasurer: 0 AKozmenko (Novosibirsk) Members:...associated alkalic basaltic rocks from Pishin District, Pakistan.4 Reasons of variations of individual...Africa)....23 Some phlogopite formation stages (on the example of study of phlogopite from the pipe Mir)...Southeastern Raipur kimberlitic field, Raipur District, Madhya Pradesh, Central India.106 Experimental...Creek K1 kimberlite dyke of the Colorado-Wyoming State Line District................113 Cathodoluminescence |  | | Journal (article/letter/editorial) | | deposit is located in the Oquirrh Mountains in Utah, USA, approximately 30 km south-west of Salt Lake City...and 85–91, respectively. Hornblende and biotite/phlogopite are the next most common phenocrysts, and apatite...amphibole granulites from along the same margin of the Wyoming craton as Bingham (Mirnejad and Bell, 2008). These...mineralized magma system at Santa Rita, New Mexico (USA). J. Petrol. 47 (10), 2021–2046. http://dx.doi.org/...volcanic and intrusive rocks in the Bingham Mining District, Utah. Society of Economic Geologists Guidebook |
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