| | Journal (article/letter/editorial) | syenite in a subvolcanic magma system: Tenerife, Canary Islands JOHN A. WOLFF Department qlGeology, University...syenite in a subvolcanic magma system: Tenerife, Canary Islands. Lithos, 20: 207-223. ~ The late Quaternary...Quaternary phonolitic pumice deposits of Tenerife, Canary Islands, are the product of a periodically-tapped...late Quaternary phonolitic pyroclastic series o f Tenerife provides an unusual o p p o r t u n i t y to c... The petrography of the silica-undersaturated Tenerife volcanic rocks is summarised in Table Geologic | | | Journal (article/letter/editorial) | from undersaturated lavas of Las Canadas Volcano, Tenerife (Scott 1970, cited by Flower 1974), from a shonkinite...and recent basalts f r o m the North Atlantic province° [n contrast the lower part of the ash series...rocks in the Permian Oslo rift and the Nandewar province (Abbott 1969). The caicic pyroxenes are characterized...analyses of k~tergrown titanaegirine and magnesio-arfvedsonite. Ac+dd / SiO= TiO 2 AlsO s FeO MnO MgO...aegirineat, gite and sphene and (2) magnesian-arfvedsonite intergrown with titan-aegirine (Table .6). Most | | | | amphiboles (Ti-potassian arfvedsonite vs. K-richterite– K-magnesioarfvedsonite–K-arfvedsonite solid solution)...an extension of the southern African orangeite province, the latter conclusion also being reached by Kent...mineralogical and geochemical character of each province, lamproite-like rocks in a particular geological...potassic magnesio-arfvedsonite KAF = potassic arfvedsonite TKAF titano-potassic arfvedsonite mg# = Mg/(Mg+Fe2+)...richterite through potassic-magnesio-arfvedsonite to titanian-potassic arfvedsonite, that is very similar to | | | Book | Professor Dr. R. T. LUBALA Laboratoire de Petrologie Universite de Lubumbashi, B. P. 1825 Lubumbashi - Zaire...individual chapters: i) the carbonatitic-alkaline province outcropping on the Kenya-Uganda border which have...Petrogenesis of the volcanic rocks of the Karoo Province edited by ERLANK (1984). In addition, a review...review paper related to this volcanic province appeared in the book devoted to the Flood Basalts Provinces...same applies to the Oceanic volcanism (except the Canary Is.). The book is subdivided into four parts centring | | | Journal (article/letter/editorial) | that the ®nal stages of hydrothermal activity and ``de®nitive cooling'' did not occur until ca. 115 Ma....and diorites are inferred to be localised feldspar-de®cient cumulates. They comprise amphibole (kaersutite...exception of sodic amphiboles (NaB 1.34, i.e. magnesio-arfvedsonite) from a quartz syenite. Kaersutite occurs...silica-undersaturated rocks (Giret et al., 1980; Bedard, 1988) and de®ne a trend similar to the `primary miaskitic magmatic...Jolotca, Pargasite; 3. DT 17, Peridotite, Jolotca, Magnesio-hastingsite hornblende; 4. DT 121, Alkali gabbro | | | Journal (article/letter/editorial) | NaMgo.rTio.rsi2o6.(3) the rims titanian magnesio-arfvedsonite (Leake, 1978; Moreover, becausethe mole...suggestthat there is good fact, we use the term "arfvedsonite" with misgiving and causeto reversethe common...substitution reflectedin Figure 6. In most cases,however,the de- IN TffcLUsIoNs t.0 o cr) c1 o c o .\ \ \ ='0...later-crystallizing enrichedin Ti and containlow-F magnesio-arfvedsonite, of Fe found in the richamount the as twice...stability limits for arfvedsoniteand concludedthat "Arfvedsonite-bearingassemblagesare presumedto have crystallizedat | | | Book (volume) | e Pargasite—Ferro-pargasite Magnesio-hastingsite—Hastingsite Magnesio-sadanagaite—Sadanagaite Kaer...site Winchite—Ferro-winchite Magnesio-katophorite—Katophorite Magnesio-taramite—Taramite Sodic Amphiboles...Amphiboles Glaucophane-Ferro-glaucophane Magnesio-riebeckite—Riebeckite Eckermannite-Ferro-eckermannite L...te Kornite Ungarettiite Kozulite Magnesio-arfvedsonite—Arfvedsonite Nybd6ite—Ferro-nybéite Biopyriboles...Francaise de Mineralogie et de Cristallographie for diagrams from Bulletin Societé Francaise de Mineralogie | | | Report (issue) | no. 12, 92441 (1978). Infra-red spectra of arfvedsonite. AMPHIBULE. Bakushkin, (Miner. Paragenezisy...(15) from Coldwell alk. complex, N. Ontario (arfvedsonite, katophorite, kaersutite). AMPHIBOLE. Dal Piaz...analyses (1) and trace elements from Tenerife, Canary Islands. Arfvedsonite. AMPHIBOLE. Ferguson, Contrib....(1979). Occurrence in syenite, Morotu, Japan, of arfvedsonite. AMPHIBOLE. Grapes et al., Contrib. Mineral...Probe analyses (2) from Morotu, Sakhalin. Zoned arfvedsonite. AMPHIBOLE. Greenwood, Geol. Surv. Pap. (Geol | | | Journal (article/letter/editorial) | that, in contrast to nepheline melasyenites, bona ®de malignite lacks perthitic feldspar and is characterized...alkali amphiboles (richterite zoned to magnesio-arfvedsonite), apatite, and titanite. Feldspathoid minerals...the contact and axial zones are separated by an ill-de®ned intermediate zone containing ``blades'' of aegirine...cation de®ciency at these sites (<11.7 apfu). Eudialytes (sensu lato) with comparable or higher de®ciencies...any noticeable loss of alkalis, and that the cation de®ciency observed is not an artifact, but rather results | | | Book | Mineral Synonyms Special Publication 2 (1999) J . de Fourestier Atlas of Micromorphology of Mineral Alteration...10 (2008) Atlas of Ore Minerals: W.H . Paar, M.K. de Brodtkorb, Focus on Epithermal Deposits of Argentina...concerning the origin of the Monteregian Hills alkaline province, and a brief description of each member. The geology...Mineral Club (ca.1965-1980) and the Club Mineralogie de Montreal (ca. 1981 to the present) for organizing...special thanks to Gilles Haineault (Saint-Mathieu-de-Beloeil, Quebec) for providing many of his photographs | | | Book (edition) | beeen foe We @ Wadeetin relvvagigld .xteliliey? santa rowan leks ) Get « ryi St pewory sine toting bee...es: CW DB DE DG DJ DK DM DO DP DS EB EO EE FM GD GG GH GM Arnold Hampson David Baker Ben De Witt William...CLASS: 4/mmm SPACE GROUP: P4/ncc; P4/nmm(Pseudo) Ve De LATTICE CONSTANTS: Ga tae 9908 3 STRONGEST DIFFRACTION...in a calcite matrix Mendoza, Argentina. at Cerro de Cacheuta, SELECTED REFERENCE: Deer, Howie, and Zussman...Tooele County, Utah; in Inyo, San Bernardino, and Santa Cruz counties, California; and at the Simon mine, | | | Book (edition) | figure caption code. Arnold Hampson David Baker Ben De Witt William Larson Carlos Barbosa Cal and Kerith...Mines cw Charles and Marcelle Weber DB Dan Behnke DE Demetrios Pohl DG Richard Graeme DJ D. K. Jones Douglas... ADAMITE clausthalite in a calcite matrix at Cerro de Cacheuta, Mendoza, Argentina. SELECTED REFERENCES:...Tooele County, Utah; in Inyo, San Bernardino, and Santa Cruz counties, California; and at the Simon mine,...volcano, New Zealand; near the Santo Nifio mine, Santa Cruz County, Arizona; in lunar rocks and Red Sea brines | | | Book | analysis and norm of a rock described as an arfvedsonite soda-granite. 7. Chemical analysis and norm...‘biotitebearing hypersthene-amphibole andesite’ and ‘arfvedsonite soda- granite’ respectively. Corundum would...peralkaline granites, commonly riebeckite or arfvedsonite; while ferrohastingsite may occur in alkali...riebeckite, riebeckite and aegirine, aegirine, or arfvedsonite as their mafic constituents. Riebeckite-bearing...Riebeckite-bearing granites in the Younger Granite province of northern Nigeria form the most extensive occurrence | | | Report (issue) | Mexico (U.S.A.) in the southern part of the Sangre de Cristo Range of the Rocky Mountains, along the east...were subsequently overlain by formations of the Santa Fe group. These formations consist mainly of 105°37'30"...with biotite, opaque oxide minerals, and minor arfvedsonite and sodic pyroxene (Plate 111.1, d). Modal alkali...Q83J94 840C7 Quartz Alkali feldspar Plagioclase Arfvedsonite Opaque minerals Accessories 38.4 52.3 6.0 2...is exposed along the western front of the Sangre de Cristo mountains. It crops out 1.5 km north and south |
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