 | | Report (issue) | | translucent. Color: Colorless, white, pale to dark green, pale yellow, pale gray to blue; brown to black...pegmatite in syenite (Greenland, Russia, Canada); in aegirine-feldspar veins (Inagli massif, Russia); an authigenic...mineral in shales (Utah and Wyoming, USA). Association: Elpidite, aegirine, epididymite, albite, polylithionite... lorenzenite (Inagli massif, Russia); albite, aegirine, narsarsukite, molybdenite, calcite, °uorite (Mont...Narss^a rssuk, Greenland. In the USA, from the Green River Formation, in the Uinta basin, Utah and in |  | | Journal (article/letter/editorial) | | DECEMBER 1 9 7 8 , VOL. 4 2, PP. 4 3 9 - 4 2 Aegirine of possible authigenic origin in Middle Devonian...Road, London ECIR 5DU SUMMARY.An occurrence of aegirine in Middle Devonian lacustrine beds in Caithness...5-296 ~, and lO7-37~ Comparison with other natural aegirine compositions shows marked differencesfrom those...unique occurrence of authigenic aegirine in the lacustrine Green River Formation of Wyoming, U.S.A. Consideration...the Devonian Orcadian basin with the Eocene Green River basin indicate similar geologicalenvironments |  | | Journal (article/letter/editorial) | | in soda-lake deposits such as the Green River Formation in the USA [10]. Nevertheless, large concentrations... silicates (K-feldspar, analcime, cancrinite, aegirine, etc.)—as well as of other observations discussed...as a mineralogical rarity. The host rock is an aegirine-hackmanite-K-feldspathic pegmatoid, untouched...K-feldspar, albite, natrolite, analcime, cancrinite, aegirine, amphibole, and vinogradovite. Secondary and accessory...shortite, bonshtedtite, barentsite, neighborite, aegirine, albite, natrolite, K-feldspar, cancrinite, analcime |  | | Journal (article/letter/editorial) | | Mineral. 2004, 16, 85-90 Hydrothermal synthesis of aegirine at 200°C ALAIN DECARREAU*, SABINE PETIT, PHILIPPE...Pineau, F-86022 Poitiers Cedex, France Abstract: Aegirine is synthesized at temperatures as low as 200°C...200°C in the system Si, Fe, Na, H2O. Aegirine is mixed with a poorly crystallized 2:1 ferric phyllosilicate...synthesized aegirine is in equilibrium with ferripyrophyllite, and that the stability field of aegirine at lower... Key-words: aegirine, synthesis, low-temperature, thermodynamic. Introduction Aegirine NaFe3+Si2O6 is |  | | Report (issue) | | Powder Pattern: John Hay, Jr. Well No. 1, Wyoming, USA. 6.403 (100), 3.18 (80), 2.70 (80), 2.61 (80), 1... northupite, pirssonite, trona (Green River Formation, Wyoming, USA); thermonatrite, shortite, villiaumite...ferrian “biotite”, pectolite, potassian feldspar, aegirine (Khibiny massif, Russia). Distribution: From Lagunillas...Lagunillas, 80 km southeast of Mérida, Venezuela. In the USA, in California, at Mono Lake, Mono Co., Borax Lake...Searles Lake, San Bernardino Co.; in the Green River Formation, Sweetwater Co., Wyoming; at several localities |  | Shchipalkina, Nadezhda, Pekov, Igor, Britvin, Sergey, Koshlyakova, Natalia, Vigasina, Marina, Sidorov, Evgeny (2019) A New Mineral Ferrisanidine, K[Fe3+Si3O8], the First Natural Feldspar with Species-Defining Iron. Minerals, 9 (12) 770 doi:10.3390/min9120770 | Journal (article/letter/editorial) | | Peninsula, Russia. The associated minerals are aegirine, cassiterite, hematite, sylvite, halite, johillerite...sanidine-bearing lavas of Leucite Hills, Wyoming, USA. The empirical formula of the most Fe-rich zone in...feldspar in this fumarole. It is associated with aegirine, cassiterite, hematite, sylvite, halite, johillerite...(Enhanced Spectrometry, Inc., Torrance, CA, USA) with a green laser (532 nm) at room temperature. The output...PRO, Enhanced Spectrometry, Inc., Torrance, CA, USA) in the range from 100 to 4000 cm−1 with the use |  | | Journal (article/letter/editorial) | | up to greasy luster and light colours: yellow, green, palebrown, pink. Frequently colorless and white...without break of chemical bonds. Occurrences and formation conditions Generalizing an available material...Burbankite from sodabearing sedimentary Green River Formation (USA) is in association with the majority...its analogs crystallize on early carbonatite formation stages under high temperatures (not below 500°С)...together with zeolites and hydrous soda minerals. Formation temperatures for these associations can be estimated |  | | Report (issue) | | Z = 4 X-ray Powder Pattern: Duchesne Co., Utah, USA. 3.037 (100), 3.561 (90), 3.076 (90), 3.225 (85)...Total 100.10 100.49 100.00 (1) Duchesne Co., Utah, USA. (2) Dara-i-Pioz massif, Tajikistan. (3) NaBSi3O8...oil shale from well cuttings (Duchesne Co., Utah, USA); in highly evolved pegmatite in an alkalic massif...searlesite, leucosphenite, aegirine, analcime, magnesioriebeckite (Duchesne Co., Utah, USA); leucosphenite, eudialyte...eudialyte, stillwellite, pyrochlore, microcline, aegirine, polylithionite, albite, quartz (Dara-i-Pioz massif |  | | Report (chapter) | | also deposits of a permanent lake; (D) alternating green-grey shale and siltstone/ fine sandstone, deposits...chalcedony, which indicates alkaline conditions of formation (Folk & Pittman 1971). Lamination within the cherts...borates (Westoll 1979) and authigenic aegirine in Caithness. The aegirine occurs in proximity to cherts within...morphology are figured from the Eocene Green River Formation by Bradley & Eugster (1969), Deardorff &...brine chemistry, in the occurrences of authigenic aegirine and pseudomorphs after borates, and sodic plagioclase |  | | Journal (article/letter/editorial) | | LEUCOSPHENITE, AND ITS OCCURRENCE IN THE GREEN RIVER FORMATION OF UTAH AND WYOMING ' "A. Pesst, Departmentof...BrSiroO*, is reviewed. Its paragenesis in the Green River Formation in Utah and Wyoming is described and four...leucosphenite from many sources in the Green River Formation and from Mont St. Eilaire, Quebec, show...authigenic mineral in sedimentary rocks of the Green River Formation (Eocene)in the Uinta Basin, northeastern...after, leucosphenitewas also found in the Green River Formation in the Bridger Basin, southwestern Wyoming |  | | Journal (article/letter/editorial) | | pyroxenes from the Morotu alkalic rocks shows that aegirine-augites whose composition iies within the immiscibility...rather well-defined area of distribution, rn'hile aegirine augites from other kinds of rocks are distributed...soda augite contains Nas.1-Na62; aegirine-augite,Nao z-Nao 7i and aegirine, Nao.z or more, in the pyroxene...the stability relations of natural aegirinesor aegirine-augites. PnppanarroN oF GLASSES The glasseswere...structure of aegirine-augite in the syenite (8203) from the Morotu River, Morotu district. A, aegirine-augite |  | | Report (issue) | | component of the marlstones and shales of the Green River Formation. Association: Pachnolite, thomsenolite,... eudialyte, lovozerite, natrolite, chabazite, aegirine (Mont St. Hilaire, Canada). Distribution: Formerly...deposit at Ivigtut, southwestern Greenland. In the USA, from St. Peters Dome, near Pikes Peak, El Paso Co...Goldie carbonatite, Fremont Co., and the Green River Formation, Colorado; in the Round Top intrusion, Sierra |  | Redhammer, Günther J., Weber, Julian, Tippelt, Gerold, Zickler, Gregor A., Reyer, Andreas (2019) Low Temperature Synthesis of Aegirine NaFeSi2O6: Spectroscopy (57Fe Mössbauer, Raman) and Size/Strain Analysis from X-ray Powder Diffraction. Minerals, 9 (7) 444 doi:10.3390/min9070444 | Journal (article/letter/editorial) | | minerals Article Low Temperature Synthesis of Aegirine NaFeSi2O6: Spectroscopy (57Fe Mössbauer, Raman)...it was possible to obtain phase-pure synthetic aegirine (NaFeSi2 O6 ) at temperatures as low as 130 ◦...lowest temperatures reported so far for phase-pure aegirine synthesis. Powder X-ray diffraction (PXRD) was...could be found with X-ray diffraction. Keywords: aegirine; NaFeSi2 O6 ; low-temperature synthesis; size-strain...growth properties 1. Introduction The mineral aegirine (NaFeSi2 O6 ) is a prominent member of the rock-forming |  | | Journal (article/letter/editorial) | | of mineral phases including: albite, NaA1Si3Os;aegirine, NaFeSi206; riebeckite, Na2Fez(Fe,Mg)aSisOE2(OH)2;...radioactive waste, borosilicate glass, albite, aegirine, riebeckite, zektzerite, stillwellite,willemite...Characteristically, the original translucent dark green-black glass is transformed into a granular, grey-blue...capsules are usually lined with a fine white or pale green precipitate, which is interpreted as quench material...glass at 35Q~C~ Mineral Albite, NaAISI30 8 Aegirine, NaFeSi206 The extracted solids were examined |  | | Journal (article/letter/editorial) | | in The Netherlands 135 Unusual occurrences of aegirine-augite, fassaite and melanite in oceanic basalts...LITHOS Laverne, C., 1987. Unusual occurrences of aegirine-augite, fassaite and melanite in oceanic basalts...augite by secondary Ti- and/or Na-rich augite and aegirine-augite was observed in five veins between the...to, other alteration stages. The conditions of formation and origin of the fluids responsible for the crystallization...melanite, 800-1000°C (?) for fassaite, >400°C for aegirine-augite); (2) the chemical composition of the studied |  | | Report (issue) | | Properties: Translucent to opaque. Color: Dark bluish green, color zoning common; yellowish, greenish, or bluish...({). Pleochroism: Strong; X = blue-green; Y = green; Z = pale green. Orientation: Z = b; X ^ c = 20 ±...lamellae in cummingtonite from metamorphosed iron formation; in felsic pegmatites; from so dium metasomatism...on detrital igneous \hornblende." Association: Aegirine, braunite, winchite, cummingtonite, albite, biotite...Russia. In the Green River Formation, head of Avintagnia Canyon, Duchesne Co., Utah, USA. In the Wabush |  | | Journal (issue) | | lies at its base along the shore of the Richelieu River. The collecting sites, the Poudrette and Demix quarries...Figure 4. Mont Saint-Hilaire with the Richelieu River in the foreground. Photo by L. Horvath. Unlike...rocks form peralkaline minerals such as sodalite, aegirine, arfvedsonite and other rare sodium silicates...minerals of the pegmatites are microcline and aegirine with local concentrations of analcime, serandite...in unaltered pegmatites at Mont Saint-Hilaire. Aegirine Albite Analcime Anatase Ancylite-(Ce) Annite Arfvedsonite |  | | Journal (article/letter/editorial) | | mineral is aegirine-augite, iNew analyses of richterite, magnesioarfvedsonite and aegirine from carbonate-rich...fenitization is the development of a network of fine, green veinlets, sometimes so close as to form a continuous...1). The veinlets usually consist of aegirine and pale blue-green sodic amphibole intimately intergrown...channels, largely infilled by intergrowth of acicular aegirine and sodic amphibole. (Base 3 ram) grown. Optical...carbonate-rich rocks (often forming at the expense of aegirine), and analyses of some of these minerals carried |  | | Report (issue) | | 663(2) Z=4 X-ray Powder Pattern: South Ouray, Utah, USA. 1.918 (100), 2.71 (50) ,3.83 (35), 2.30 (25), 1...conditions in dolomitic oil shale (South Ouray, Utah, USA); in metamorphosed tuff and clayey carbonate sediments...pyrite, calcite, quartz (South Ouray, Utah, USA); quartz, aegirine, rhodochrosite, zircon, fluorite, gagarinite...south-southeast of South Ouray, Uintah Co., Utah, USA. At Mont Saint-Hilaire, Quebec, Canada. From near...geologist of Sun Oil Co., Salt Lake City, Utah, USA, for his assistance in providing samples. Type Material: |  | | Book | | Hyperagpaitic rocks, a new type of pegmatoid formation in nepheline syenite massifs U3 The place of hyperagpaitic...of the special conditions of endogene mineral formation which enable various elements to form ore concentrations...characterize comprehensively a new type of pegmatoid formation in agpaitic nepheline syenite massifs and thus...alkaline, previously unknown conditions of mineral formation in magmatic processes. tIn these deposits, the... Hyperagpaitic rocks, a new type of pegmatoid formation in nepheline syenite massifs The Lovozero and |  | Liu, Shang, Fan, Hong-Rui, Yang, Kui-Feng, Hu, Fang-Fang, Rusk, Brian, Liu, Xuan, Li, Xiao-Chun, Yang, Zhan-Feng, Wang, Qi-Wei, Wang, Kai-Yi (2018) Fenitization in the giant Bayan Obo REE-Nb-Fe deposit: Implication for REE mineralization. Ore Geology Reviews, 94. 290-309 doi:10.1016/j.oregeorev.2018.02.006 | Journal (article/letter/editorial) | | Washington University, Bellingham, Washington 98225, USA e Department of Earth Sciences, The University of...represented by alkali silicates (sodic amphibole or aegirine) enriched REE-(Fe) 29 ores, there is extensive...process. Alkali silicates (sodic 32 amphibole, aegirine and phlogopite) from the East and Main open pits...for EMPA and laser 34 ablation ICPMS analyses. Aegirine and phlogopite from the open pits and fenite ...Kramm, 65 2000) and carbonatite dykes at Haast River, New Zealand (Cooper et al., 2016). 66 Based on |  | Petersen, O. V., Balić-Žunić, T., Gault, R. A., Andersen, T. (2003) The first occurrence of ewaldite and donnayite-(Y), two rare carbonate minerals, in the Narssârssuk pegmatite, South Greenland. Neues Jahrbuch für Mineralogie - Monatshefte, 2003 (12) 543-555 doi:10.1127/0028-3649/2003/2003-0543 | Journal (article/letter/editorial) | | (Y), ancylite – (Ce), and fluorite along with aegirine, elpidite, feldspar (orthoclase), graphite and...previously described from the Green River formation, Sweetwater County, Wyoming, USA (Milton et al. 1965 and...paragenesis itself belongs to a later stage in the formation of the pegmatite, a stage dominated by CO3 – 2-rich...paragenesis. Other associated minerals include aegirine, elpidite, feldspar (orthoclase), graphite and...mckelveyite – (Y) from Sweetwater County, Wyoming, USA (Desautels 1967), which later proved to be polycrystals |  | | Book | | INTRODUCTION Mont Saint-Hilaire and the Richelieu River. Photo: 123rf.com/ Sebastien Lemyre anada, the...data from his subsequent research. Dr. Peter Tice (USA) provided a copy of his M.Sc. and Ph.D. theses. Dr...discussion on MSH rock types with LH. Dr. Dave Richerson (USA) provided details of the collecting history of donnayite...specimens from its collection. Dr. Modris Baum (USA) generously provided specimens for research and photographs...Baum (USA), the late Henry Budgen (Canada), Gianfranco Ciccolini (Italy), the late Rock Currier (USA), Robert |  | | Journal (article/letter/editorial) | | and veinlets in the pillow lavas of the Ongeluk Formation in the Northern Cape Province of South Africa...Geological setting Basaltic andesites of the Ongeluk Formation, Transvaal Supergroup in Griqualand West, constitute...subaqueously. The volcanic rocks of the Ongeluk Formation are conformably overlain by Superior-type banded...of geological settings. Their relevance to the formation of massive sulphide deposits along the axes of...The data also constrain the role of TSR in the formation of Mississippi Valley-Type (MVT) ore deposits |  | | Journal (article/letter/editorial) | | north-east corner of Rhode Island are riebeckite-aegirine granites and the Rattlesnake granite is a riebeckite...Astrophyllite Katophorite Aenigmatite Hedenbergite Aegirine Augite/aegir.-augite Fayalite Biotite Opaque Oxidest...and the occurrence of quartz, aenigmatite, and aegirine (acmite) in the Quincy Granite are consistent...5oo ~ and authigenic riebeckite(?) in the Green River Formation of Utah (Milton and Eugster, I959) may indicate...P.), I959. Mineral assemblages o f the Green River Formation, pp. II8-5o, in Researches in Geochemistry |
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Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA