 | | Journal (article/letter/editorial) | | 1994 Cenozoic alkali basaltic magmas of western Germany and their products of differentiation K. Hans Wedepohl...Geochemisches Institut der Universitfit, D-37077 G6ningen, Germany ReceivedFebruary 25, 1993 / AcceptedAugust 24,...and 31 trace elements in olivine nephelinites, nepheline basanites, basanitic alkali olivine basalts and...northern Rhone Depression through E France, W Germany, Belgium and the Netherlands to the North Sea....Miocene age (Massif Central, France; Vogelsberg, Germany) is located at the edge of the belt makes a narrowing |  | | Journal (article/letter/editorial) | | Strontium Isotope Studies on Young Volcanic Rocks from Germany and Italy J. HoErs Zentrallaboratorium ffir die...Lower Saxony and I-Iessia and Quaternary leucite-nepheline tephrites from the Laachcr See area are similar...7054. Three trachytes and one phonolite from the WesterwMd and one phonolite from the Laacher See area have...ratios than the comparable basaltic rocks from N.W. Germany (0.7071 to 0.7102). Three peridotite nodules vary...limestones producing the olivine-nephelinites from N.W. Germany seem to be unlikely. A discussion of the origin |  | Jung, S., Mezger, K., Hauff, F., Pack, A., Hoernes, S. (2013) Petrogenesis of rift-related tephrites, phonolites and trachytes (Central European Volcanic Province, Rhön, FRG): Constraints from Sr, Nd, Pb and O isotopes. Chemical Geology, 354. 203-215 doi:10.1016/j.chemgeo.2013.06.026 | Journal (article/letter/editorial) | | Mineralogisch-Petrographisches Institut, 20146 Hamburg, Germany Institut für Geologie, Universität Bern, Baltzerstrasse...Ocean Floor, Wischhofstrasse 1-3, 24148 Kiel, Germany d Georg-August Universität Göttingen, Geowissenschaftliches...Isotopengeologie, Goldschmidtstr. 1, 37073 Göttingen, Germany e Mineralogisch-Petrologisches Institut der Universität...Universität Bonn, Poppelsdorfer Schloß, 53115 Bonn, Germany b a r t i c l e i n f o Article history: Received...Rhön area (Central European Volcanic Province, Germany) belong to a moderately alkali basaltic suite that |  | | Journal (article/letter/editorial) | | phonolitic lavas from Nigeria, Australia, East Germany and New Zealand ANTHONYJ. IRVING* tunar and Planetary...Bokkos (Nigeria), Phonolite Hill (northeastern Australia) and Heldbmg (East Germany) is consistent with...associated lavas ranging from hawaiitic nepheline mugearite to nepheline benmoreite can be modeled very well...relating the unusual Iherzolite-bearing mafic nepheline benmoreite from Pigroot (New Zealand) to basanitic...possibly the product of melting of a mantle source region previously enriched in Sr and light rare earth |  | | Book | | Sciences Mineral Resources Division Nepheline —-Syenite and Phonolite HMSO 15s Od Digitized by the Internet...MINERAL RESOURCES DIVISION NephelineSyenite and Phonolite J. B. ALLEN, = fips B.Sc., Ph.D., and CHARSLEY...Environment Research Council Contents Nepheline-Syenite and Phonolite Introduction Chemistry, Mineralogy...Mineralogy and Classification of Nepheline-Bearing Rocks Origin of Nepheline-Bearing Rocks Mining and Treatment...Assessment of Nepheline-Syenite and Phonolite Occurrences Nepheline-Syenite and Phonolite in Commonwealth |  | | Journal (article/letter/editorial) | | Albert-Ludwigs-Universität Freiburg, D-79104 Freiburg, Germany 2 Department of Mineral Sciences, National Museum...lower crustal pyroxenite xenoliths erupted in phonolite from the Mount Sidley composite volcano, Marie...augite, plagioclase, ; K-feldspar, kaersutite, ; nepheline, ; leucite, apatite, Ti-magnetite ; ilmenite (Soellner...10% for less abundant elements. (0.5 1.0 Ma) phonolite lavas erupted from the Mount Sidley composite...EPMA analysis of rhönite in a nepheline basanite from Scharnhausen, Germany, which has 4.85 VIIICaIVAl a |  | | Report (issue) | | ......................... Federal Republic of Germany .................................. France................. Aluminous Igneous Rocks Nepheline Syenite and Phonolite............................................................... Federal Republic of Germany .................... German Democratic Republic.......................... 3. Maj or nepheline syenite and phonolite deposits in the conterminous United...States........................................ 4. Nepheline syenite deposits in Ontario and Quebec Provinces |  | | Journal (article/letter/editorial) | | June 11, 1929.] which are found in the volcanic region of Dunedin, T HENewphonolites Zealand, are of a...as well as nepheline. There is also an abundance of tinguaites, in all of which nepheline is distinct...worked in this region are therefore perfectly familiar with the minerals sodalite and nepheline in many different...phonolitic rocks there is, in addition to the nepheline and sodalite, a mineral of ill-defined characters...was at first considered to be allotriomorphic nepheline. 1 This opinion was based on the solubility of |  | | Journal (article/letter/editorial) | | from the 1973 find in the Demix quarry sector of the Poudrette quarry, Mont SaintHilaire, Québec. Canadian...from the 1973 find in the Demix quarry sector of the Poudrette quarry, Mont Saint-Hilaire, Québec. Royal...acterized by containing feldspathoids such as nepheline and sodalite, alkali amphiboles such as arfvedsonite...Archipelago, Guinea, the rocks are peralkaline nepheline syenites of Cretaceous age. Here serandite occurs...composed mainly of microcline, sodalite, and nepheline (Lacroix 1931). The subhedral crystals are elongated |  | | Journal (article/letter/editorial) | | in t h e place of origin of the basalts from the region investigated, would probably have been r $4S =...basalts - - the most frequent type of basalt in this region - - h a d their origin in the partial melting of...alkali basalts, nepheline basanites, a n d olivine nephelinites occur i n this region which measures 150...d frequency, olivine alkali basalts (up to 5% nepheline i n the norm) are p r e d o m i n a n t i n comparison...HoherHagen Z& Steinberg Gahrenberg H.-MLINDEI KASSEL s~ H~rzstein 9 WITZENHAUSEN tiederkaufungen |  | | Journal (article/letter/editorial) | | Dyers Pass' Ibid. p. 408. 4 ,On the Occurrence of Nepheline-bearing Rocks in New Zealand' Rep. Austral. Assoc...terraces carry it forward to the Upper Leith, in which region the valley-form is mature. Throughout this distance...Teschenite. 8. Trachyte. 9. Kaiwekite. 10. Trachytoid phonolite. 11. 12. 13. 14. 15. Nephelinitoid phonolito...phonolito, Leucitophyre. Trachydolerite. Andesite. Nepheline-basanite. ( ])olcrite, Mount-Charlestype. 16. ~...obtained, 500 feet above sea-level. In the Glen quarry at Caversham, half a mile distant, the same deposit |  | | Journal (article/letter/editorial) | | rite-benmoreite; basanite-nepheline hawaiitenepheline mugearite-nepheline benmoreite; moderately potassic...ranging in composition from basalt through to phonolite and feldspathoidal trachyte. These flows appear...(Macdonald, 1960i Muir & Tilley, 1961); (c) Normative nepheline content to distinguish mildly undersaturated rocks...trachyte and phonolite. In the more evolved rocks (trachyandesite, benmoreite, phonolite) olivine phenocrysts...Ti-augite Gm: Aegirineaugite Phenocrysts common Gm Nepheline Trachyandesite Ph : Rare Ph: Ti-augite Gm: Diopsidic |  | Zahradník, Jan, Jirásek, Jakub, Starý, Jaromír, Sivek, Martin (2020) Production, Reserves, and Processing of Feldspar and Feldspathoid Rocks in the Czech Republic from 2005 to 2019—An Overview. Minerals, 10 (8) 722 doi:10.3390/min10080722 | Journal (article/letter/editorial) | | feldspars and 20–35 kt of feldspathoid rocks (nepheline syenite), the Czech Republic ranks among the top...pegmatites (key active deposit: Luženičky). Nepheline syenite is mined at a single deposit. All deposits...than 50% is exported, generally to Poland and Germany. Keywords: feldspar; feldspathoid; mine production;...Iran, and India [2]. Frequently, nepheline syenite, nepheline phonolite, and other plutonic and volcanic...63.38 58.16 53.05 48.07 44.40 Feldspathoids Nepheline Na3 K(Al4 Si4 O16 ) 8.06 15.91 0 34.90 41 |  | | Journal (article/letter/editorial) | | of Leueite-Bearing Lavas in the Roman Volcanic Region, Italy The Sabatini Lavas A. Cundari School of...petrogenesis of leucite-bearing lavas from the Roman Region, Italy, is considered in the light of the petrochemistry...compositional variation, from leucite-tephrite to leucite-phonolite compositions, conforms to the well-known variation...proposed that the mantle source material of the Roman Region lavas evolved as an open system under the influence...data on the Quaternary alkaline lavas of the Roman Region (Washington, 1906) have been interpreted as evidence |  | | Journal (article/letter/editorial) | | main Mountsorrel Quarry. Granodiorite, South of Cocklow Wood. Granodiorite, Cocklow Quarry. Granodiorite...Mountsorrel Quarry. Gabbro. Granodiorite, Rubbish Tip Quarry. Granodiorite, main Mountsorrel Quarry. Granodiorite...types such as phonolite (nepheline and hauyn in Sao Thome), nephelinetephrite, and nepheline-basanite.2...Gulf of Guinea. Anal. W. H. and F. Herdsman. A. Nepheline-basalt, III (IV). 6". 3. 4, plug in New Red Sandstone...that an extended search has discovered is the nepheline-basalt of a plug in the New Red Sandstone volcanic |  | | Journal (article/letter/editorial) | | DERBY, Esq., F.G.S. (Read June 22, 1887.) T~E nepheline-rocks heretofore recognized iu Brazilian territory...19' W., has come into my hands, showing that phonolite of somewhat different character from that of Fernando...also. Recent investigations have shown that nepheline-rocks of a somewhat different character are also...and relation to the main orographie lines of the region in which they occur are shown in the accompanying...a microscopic examination of these rocks, to nepheline-bearing augite-syenite, i single point Fig. 1 |  | | Journal (article/letter/editorial) | | ITALIAN PETROLOGICAL SKETCHES. THE BOLSENA REGION. I. Introduction.-The number and easy accessibility...predominantly petrological in character. I. THE BOLSENA REGION. as Bibliography.-The work of the early geologists-such...Rath1 in 1868 gave a detailed description of the region. His paper is largely topographical, with some...1888 Verri3 published a geological sketch of the region, the rocks collected by him being handed over to...by vom Rath. He considers that the tuffs of the region were erupted in the condition of mud -a conclusion |  | | Report (issue) | | Outer ring____________________________ Sphene-nepheline syenite.__________ Garnet-pseudoleucite syenite______...Sphene-cancrinite syenite.______ Sphene-garnet-nepheline syenite. Jacupirangite and sphene pyroxenite....Intermediate ring._____________________ Altered phonolite._________________ Undivided trachyte-phonolite_..._________________ Analcime-olivine melagabbro. _______ Nepheline syenite pegmatite. _______ Trachyte porphyry_______________...Aplite_ ________-______-_--_-_---___ Eudialyte-nepheline syenite pegmatiteGarnet fourchite_ _ ________________ |  | | Journal (article/letter/editorial) | | Zeolite-group minerals in phonolite-hosted deposits of the Kaiserstuhl Volcanic Complex, Germany Simon Spürgin1...Mineralstoffwerke, Bergstrasse 114, 79268 Bötzingen, Germany 2 ÌSOR Iceland GeoSurvey, Grensásvegur 9, 108 Reykjavik...Abstract Subvolcanic phonolite intrusions of the Kaiserstuhl Volcanic Complex (Germany) show variable degrees...replacement products of primary phases within the phonolite matrix. Phonolites in the eastern Kaiserstuhl...more open hydrothermal system in the Kirchberg phonolite, which was emplaced in a subaerial volcanic succession |  | | Report (issue) | | porphyries and the Polish Man's Tarn vent (c) The Phonolite-Kenyte sequence (i) Porphyritic phonolites and...central plug of Mount Kenya (1) The phonolites (2) Nepheline syenite (3) Structure and formation of the plug...plug of the volcano is composed of nepheline syenite and phonolite in the form of a ring structure. Satellite...Kirinyaga Districts (Central Region) and parts of Embu and Meru Districts (Eastern Region), and includes the greater...range from the warm lowlands to the severe alpine region with its very large diurnal temperature range. |  | | Report (issue) | | Continued Chico Phonolite .................................................... Green phonolite .................... Silver-gray phonolite ....................................... Nepheline syenite dike on Point...Point of Rocks Mesa ... Ocellar analcime phonolite ................................ Mafic and ultramafic...white feldspar crystals in green variety of Chico Phonolite ...................................... 9. Near-vertical...weathering in silver-gray variety of the Chico Phonolite ............................. 10. Eagle Rock dike |  | | Journal (article/letter/editorial) | | previously designated as ameletite is variously nepheline and mixtures of sodalite, analcime, phillipsite... , at first considered to be allotriomorphie nepheline'. It was said to be abundant in the majority of...volcanic district, New Zealand, to the exclusion of nepheline or sodalite. Marshall also reported ameletite...mineral was based on 'the trachytoid phonolite of Tainui Quarry, Anderson's Bay' in which it was reported...as interstitial material, without coexisting nepheline or sodalite. Properties included rectangular or |  | | Book | | the petrography of the interesting and unique nepheline syenite massif of Ditro in Transylvania, on which...names for the various “foid” root names, e.g. nepheline syenite; and 34 are rock terms. The Bibliography...scapolite F = feldspathoids or foids including nepheline, leucite, kalsilite, analcime, sodalite, nosean...names have been given, e.g. limburgite = hyalo-nepheline basanite (6) the prefix micro- should be used...components include perovskite, olivine, haüyne, nepheline and pyroxene. If these minerals comprise > 10% |  | | Journal (article/letter/editorial) | | peralkaline melts: The Katzenbuckel volcano, Southwest Germany Ute Mann, Michael Marks, Gregor Markl * Institut...sität, Wilhelmstrasse 56, D-72074 Tübingen, Germany Received 18 October 2004; accepted 5 September...The igneous rocks of the Katzenbuckel, Southwest Germany, represent a unique and unusual alkaline to peralkaline...Phase I comprises the main rock bodies of phonolite and nepheline syenite, which were later intruded by different...in alkali feldspar and up to 2.6 wt.% Fe2O3 in nepheline). These observations point to a metasomatically |  | | Report (issue) | | Intrusive Rocks 2. Tertiary Volcanic Rocks (1) Kapiti Phonolite (2) Upper Athi Tuffs (3) Mbagathi Trachyte (4)...Basalts and Agglomerates (5) Olorgesailie Biotite Phonolite (6) Olorgesailie Phonolitic Nephelinite (7) Ol...Esayeiti Oligoclase Tephrite (10) Ol Esayeiti Phonolite (11) Ol Esayeiti Upper Trachyte . (12) Ol Esayeiti...—Minor fold styles 8 ,—Transverse profile of the region west of the River Kajiado 9 .•—Stereogram of structural...has an area of approximately 1,200 sq. miles. The region falls within the Southern Province, and the greater |
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