 | | Book | | look for. Michael O’Donoghue Proustite (East Germany) 7 Rocks We can define a rock as a large mineral...Darker and even poorer in silica than diorite is gabbro, containing a calcium-rich plagioclase and pyroxene...Granite Nepheline syenite Syenite Dio rite Gabbro Peridotite 13 Dunite Serpentinite Rhyolite...the fixed index (the ordinary ray) at a higher or lower reading than the moveable (extraordinary) ray. Where...incident beam are retarded by passing through to the lower side of the film, rejoining the main beam either |  | | Journal (article/letter/editorial) | | authors are printed in SMALLCAPITALS,Subjects in lower-case roman, and Localities in italics. The minerals...i28. Amblygonite, France, Maine, New South Wales, Saxony, anal., cell-dimensions, distinction from montebrasite...albite, I56; - - , anal., d2o i, 489. Amoibite, Germany, anal., opt., X-ray, 26. Amos Stream, New Caledonia...Australia, alkali feldspar, anal., d2oi, 489. Bosahan quarry, Falmouth, Cornwall, biotite, 2IO. BOWDEN (P.)...Egypt, 394; New Zealand, 375. Chursdorf, Penig, Saxony, amblygonite, 414. Cinnabar, Yorkshire, xlii. CLARK |  | | Journal (article/letter/editorial) | | Authors are printed in SMALLCAPITALS,Subjects in lower-case roman, and Localities in italics. T h e m i...Aerugite, synthesis, 72; Cornwall, anal., X-ray, 72; Saxony, anal., X-ray, 72. Aeschynite-priorite series,...topotactic formation from y-CaSiOa, 347. Ankerite, Germany, topotactic decomposition of, 634. Anthoinite,...Arsenobismite, Brazil, 785. Artern, Sachseu-Anhalt, Germany, mellite, 542. ASWATHA~ARAYA~A(U.), Isotopic ages...(S.), see SARBADHIKARI (T. n.), 770. Bhilwara district, ]~ajasthan, India, scorodite, 776. BmaAR (G. |  | | Journal (article/letter/editorial) | | INDEX Names of authors are in capitals, subjects in lower case roman, and localities in italics; book reviews...geochronology and mineralogy of orangeites from the Damodar Valley, eastern India, 313 ARLT, T., 801 AsHwoarn, J.R...-sanidine in Lionato Tuff, Colli Albani Volcanic District, Central Italy, petrogenetic implications of,...the significance of poikilitic textures in the Lower Main Zone of, 435 Ca-Na phosphate, in peraikaline...Australia, 325 Craton, orangeites from the Damodar Valley, eastern India formed in, 313 CRESSEY,G., 65 CRIDI)LE |  | | Book (edition) | | dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....Scbwarzwald Mts., in the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from the Rabejac deposit... = = = = = Acanthite, x 16 mm, Freiberg, Germany, H Abernathyite, 12 mm, Ririera/, France, H Abhurite...at the Himmelsftirst mine, Freiberg, both Saxony, Germany. In the subtropical areas acanthite may occur...byssolite. Mono- coast of North America: Kobuk River Valley, Alaska, clinic, C2/m, a,b,c = 9.89, 18.20, 5.31 |  | | Journal (article/letter/editorial) | | approach the composition of granodiorite, syenite, and gabbro) into skarnified marbles. The degree of magma overheating...preserved zones of forsterite calciphyres and periclase marbles, whereas skarns at mafic intrusions consist...rocks of the pluton vary in composition from older gabbro (43 wt % SiO2) to younger leucocratic granites...contact aureoles include zones of brucitized periclase marbles, which could develop only in Mgbearing...the metasomatic aureole exposed in the Crestmore quarry (modified after [4]). (1) Carbonate rocks (dolomite |  | | Journal (article/letter/editorial) | | L. GERDES1∗, LUKAS P. BAUMGARTNER2 AND JOHN W. VALLEY DEPARTMENT OF GEOLOGY AND GEOPHYSICS, UNIVERSITY...Nabelek & Labotka, 1993; Ferry, 1994; Gerdes & Valley, 1994; Roselle, 1997). This study presents stable...Gutenberg Universität, Becherweg 21, D-55099, Mainz, Germany. Oxford University Press 1999 Downloaded from...contact aureole. The Calcare di Esino makes up the lower 300 m, and the Dolomia Principale the upper 200...dissolved components (e.g. Korzhinshii, 1970; Gerdes & Valley, 1994). Oxygen isotope ratios of carbonate rocks |  | | Journal (article/letter/editorial) | | belong to hypabyssal magnesian skarns of the periclase and monticellite metasomatic PT facies at contacts...spectrum of intrusions: from leucocratic granites to gabbro, including adamellites and other alkaline rocks...to the high-Mg metasomatites. The latter are periclase (brucite) marbles, spinel–forsterite calciphyres...Lazio province in Italy [6] or disseminated in periclase marbles after dolomites in the outer fram- 800...rocks with an intrusion of nepheline syenites and gabbro on the Diablo plateau [7]. Vonsenite was noted |  | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...between that of the sample and that of the next lower grade. In this case we consider the hardness to...Different scratch hardness on kyanite 20 somewhere lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert |  | Doroshkevich, Anna, Sklyarov, Eugene, Starikova, Anastasia, Vasiliev, Vladimir, Ripp, German, Izbrodin, Ivan, Posokhov, Viktor (2017) Stable isotope (C, O, H) characteristics and genesis of the Tazheran brucite marbles and skarns, Olkhon region, Russia. Mineralogy and Petrology, 111 (3) 399-416 doi:10.1007/s00710-016-0477-8 | Journal (article/letter/editorial) | | transformation to periclase marble and then to brucite marble; (2) injection of periclase marble with a following...following replacement of periclase by brucite or Editorial handling: C. Hauzenberger * Anna Doroshkevich...weaknesses. Keywords Brucite marble . Skarn . Tazheran gabbro-syenite massif . Olkhon collision system . Stable...is usually described as hydration product of periclase marble formed during contact metamorphism of dolomite...sizes in syenites as well as veins crosscutting gabbro and syenites (Sklyarov et al. 2009, 2013). In addition |  | | Book (edition) | | Affiliation/Address Luzerner Str. 10-12, D-12205 Berlin, Germany – Freie Universität Berlin, FB Geowissenschaften...Mineralogie, Malteserstr. 74-100, D-12249 Berlin, Germany Bundesanstalt für Geowissenschaften und Dr. Frank...Stilleweg 2, D-30655 HanDr. Thomas Oberthür nover, Germany Dr. Thomas Kenkmann Museum für Naturkunde der ... zu Berlin, Invalidenstr. 43, D-10115 Berlin, Germany Prof. Dr. Robert Marschik & Ludwig-Maximilians...Rieger cengeologie, Luisenstr. 37, D-80333 München, Germany Dr. Thomas Seifert TU Bergakademie Freiberg, Institute |  | | Journal (article/letter/editorial) | | greywackes and sandstones (Givetian–Visean, Variscides, Germany) as indicators of ultramafic source rocks MARTIN...Braunschweig, Postfach 3329, D-38023 Braunschweig, Germany (Received 11 November 1998; accepted 29 March...-Zellerfeld 35 57 35 57 0.5 0.5 4725 Bad Sooden-Allendorf 4725 Bad Sooden-Allendorf 35 56 35 56 5417...nappe and Rhenish Slate Mountains The Upper Emsian–Lower Carboniferous succession of the Giessen nappe (Figs...while the younger, garnet-bearing, coarse grained ?Lower Carboniferous sequence occurs mainly in the southern |  | | Catalog/List | | ALLEMONTITE An intergrowth of arsenic and antimony Germany Harz Mountains, Andreasberg Rich gray botryoidal...marble ..... . Connecticut Canaan, New England Lime quarry Silky white xl prisms in dolomitic marble .......material ........... Arizona Cochise Co. , Swisshelm district Rich brown to gray massive, some with minor cerussite...aluminum silicate Calilornia Placer County, Grass Valley Hornblende Norite Broad white crystal sections...chloro-phosphate :\'ew Hampshire Grafton Center, Ruggles quarry Olive green masses in pegmatite ....... Fl. APOPHYLLITE | | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned jn such a way that they form...that of the next lower grade. In this case we consider the hardness to be of the lower grade adding a half-grade...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert...should preferably be more detailed, e.g. walls of a quarry, or refuse heap specimen, so that one could find |  | | Journal (article/letter/editorial) | | nearly all the magnesium-bearing carbonate beds to periclase marbles, which subsequently were altered to predazzites...magnesian marbles without the intervention of "lower-temperature" steps that involve diopside, wollastonite...Exploded isometric block diagram of the Commercial Quarry, Crestmore, California 879 Introduction 880 General...aerial view of the Commercial 882 Petrology 884 Quarry, Crestmore, California . Pre-batholith metasedimentary...metasedimentary rocks. 884 4. Exposures in the Commercial Quarry Igneous rocks 886 5. Photomicrographs Quartz diorite |  | | Journal (article/letter/editorial) | | Emplectite, acicular crystals in quartz from Tannenbaum, Saxony ; after deducting more than 50 per cent. of quartz...Wolfsberg, Harz ; VIII, feather ore from Braunsdorf, Saxony ; IX, minute crystals in cavities of massive material...Chili, chloridesoccur in the upper, iodides in the lower, and J. J. S. bromides in the intermediate layers...copper. L. J. S. Formation of Manganosite and Periclase By HJALMAR SJOGREN (Ja1wb.f.$fin,, 1899, ii, Ref...Abstr., 1897, ii, 324).-Manganosite (MnO) and periclase (MgO) occur under the same conditions as original |  | | Journal (article/letter/editorial) | | (Lyadzhvardara and others), Ukraine (Delavetskii quarry in the Rakhov Massif, Carpathians), in Afghanistan...assemblages in handspecimens from the southern quarry [1] is as follows (Fig. 3): (I) leucocratic microcline–perthite...lazurite deposits in Russia occur in the Slyudyanka district, Irkutsk oblast, southwestern Baikal area, and...lazurite–forsterite vein located in the middle quarry of the Slyudyanka diopside–lazurite metasomatic...the largest in the Baikal area, is located in the valley of Lazurnyi Creek, a left-hand tributary of the |  | | Journal (article/letter/editorial) | | Göttingen, Goldschmidtstraße 1, 37077 Göttingen, Germany 3 Department of Geography and Geology, University...metamorphism reaching granulite facies metamorphism at lower crustal depth of ∼35 km subsequently followed by...Analytics, Chemnitzer Straße 40, 09599 Freiberg/Saxony, Germany 3 Geological Survey of Austria, Department...that are replaced by similar flat patterns but lower ΣREE at the outermost rims. In contrast, younger...Erlangen University, Schlossplatz 4, 91054 Erlangen, Germany e-mail: thomas.angerer@uibk.ac.at Investigating |  | | Book | | names like granogabbro (granite-gabbro), monzogabbro (monzonite-gabbro), rhyodacite (rhyolite-dacite)...[Vulcan, Roman god of fire], plutonite (Pluto and the lower world), and Pele’s hair (Hawaiian fire goddess)...tribal peoples: bojite (Boii, Celtic tribe in Germany), gondite (Gonds, central India), onkilonite (Onkilones...sthene) are the essential constituents; differs from gabbro by the presence of the Definition proposed prthopyroxene...lUGS, plutonic rock satisfying the definition of gabbro, in which pl/(pl + px + ol) is 10-90 and the opx/(opx |  | | Journal (article/letter/editorial) | | Limestones of the Carlingford District. 209 •different members of the subgenus Raphiophorus, to which...middle-shield (No. 35648 Mus. Pract. Geol.). x 4. Horderley Quarry, la.—Ditto. Profile view of same specimen, x 4...(No. 35646, Mus. Pract. Geol.). X 2J. Horderley Quarry. 4.—Ditto. Ditto (No. 35641, Mus. Pract. Geol.)...River. 6.—Ditto. Complete enrolled specimen showing lower surface of glabellar projection, rostral spine and...Contaminated Igneous Rocks of the Carlingford District, Co. Louth. BY G. D. OSBORNE, Dept. of Mineralogy |  | | Book (edition) | | we may cite the following cases. As a result of bad observation in the field, crush-bands in granite...crystallizations from the magma. In consequence of bad sampling, it has often happened that rare and quantitatively...the solid earth-crust, and coming to regions of lower temperature and pressure, gradually suffer such...principle that a good English word is preferable to a bad Greek one. One must be careful to distinguish between...one, the base of the complex descending to lower and lower horizons from south to north. The Duluth, the |  | | Catalog/List | | mass of black crystals, some Mount Malosa, Zomba District, lxl ins £5 lx2ins _lyro?'~~e . __ __ _ ___ ___...- - - AMAZONITE Pure green cleavage Landsverlc quarry, Evje, Norway lxl S0p ALAMOSITE fcLp 10 g:...with Chrysotile, pale grey-green County Bridge Quarry,Lizard ,Cornwall MgFeSiO massive. Minas Gerias...½ Red brown fibrous on matrix BERAUNITE lxl £4 Germany FePO/4 £2.S0 Rich green masses with Siderite. Unusual...MITE Creamy white micro crystals in cavirties Saga Quarry, Tvedalen, Norway Ix½ £3 Al O OH in Natrolite _ |  | Sklyarov, Eugene V., Lavrenchuk, Andrey V., Doroshkevich, Anna G., Starikova, Anastasia E., Kanakin, Sergei V. (2021) Pyroxenite as a Product of Mafic-Carbonate Melt Interaction (Tazheran Massif, West Baikal Area, Russia) Minerals, 11 (6) 654 doi:10.3390/min11060654 | Journal (article/letter/editorial) | | between marbles and beerbachites (metamorphosed gabbro dolerites) and in 5 cm to 20 m fragments among...the intrusion of mantle mafic melts into thick lower crust saturated with fluids caused partial melting...Received: 10 May 2021 Keywords: pyroxenite; marble; gabbro dolerite; mafic melt; carbonate melt; silicate-carbonate...varieties), gabbro, and ultramafics. The tersyenite (including nepheline-bearing varieties), gabbro, and ultramafics...are large gabbro intruunits (Figure 2). The igneous rocks in the rocks three units large gabbro intrusions |  | | Report (issue) | | reference for the Pala Wright (5) pp. 19,40. district, Jahns and AMPHIBOLES TREMOLITE Riverside County:...rhyolite near Glen Ellen on the east side of Sonoma Valley, Chesternian (p.c. '51). Tulare County: 1, Clusters...cavity fillings in basalt in the Pacific Electric quarry in Brush Canyon, locality 3. Neuerburg (Dp. 158...Murdoch (p.c. '45). Location 2, Pacific Electric quarry, Neuerburg (1) p. 158, where apophyllite occurs...came from one mile east Spring, Ubehebe mining district. Inyo County: of Dodd AXINITE 2, A specimen |  | | Book | | composition into an opaque amorphous mass with much lower properties, such as refractive index and specific...significantly reduced 18O content (down to <10%), much lower than the 18O composition of the solution after reaction...the apatite, with the presence of NaF producing a lower nucleation density, larger crystals and coarser...to end member FAP, whereas samples reacted with lower F content are probably replaced by hydroxy-FAP (Ca10(PO4)6OHxF2x)...between calcite and hydroxyapatite (13.4%) is lower than between calcite and FAP (14.7%). The replacement |
|
