 | Koroteev, V. A., Ogorodnikov, V. N., Sazonov, V. N., Polenov, Yu. A. (2008) Juxtaposition of tungsten-, gold-, and rock crystal-bearing quartz veins in the Urals: Theory and practical implications. Doklady Earth Sciences, 421 (1) 827-831 doi:10.1134/s1028334x08050267 | Journal (article/letter/editorial) | | GEOCHEMISTRY Juxtaposition of Tungsten-, Gold-, and Rock Crystal-Bearing Quartz Veins in the Urals: Theory and...is commonly deemed that economic occurrences of rock crystals are related to quartz veins that do not...as a basic one for forecasting and prospecting of rock crystals [1–3]. At the same time, the Urals, Pamirs...East, and other regions include ore deposits with rock crystals mined as a byproduct [4–9], and occasionally...considerable. For example, the byproduct of conditioned rock crystals (piezoelectric quartz crystals) amounted |  | | Journal (article/letter/editorial) | | microscope. Although zircon occurs in almost all rock-types, it occurs most commonly in is considered...mineral. Dis tribution of elements in a zircon crystal has been investigated by means of an electron probe...composition of liquid phase from which a zircon crystal begins to crystallize. 3) change of the Hf/Zr ratio...through types with granitic of shimanto igneous Rock rhyolite. of zone Peninsula Kyushu. range...Takato granitic com plex is mainly composed of five rock types: biotite granodiorite, coarse- and mediumgrained |  | | Report (issue) | | potassium determinations which were made in the Rock Analysis Laboratory. Z. E. Peterman, .J. K Frye.... . Bikita Quarry Lepidolite ...... . Chestnut Flat Mine Muscovite .... . Petrick Quarry Biotites .....Ogishke Conglomerate Agawa Iron-Formation. Principal Rock Types .. . Structure and Thickness .... . Ages for............... . Origin of the Keweenawan Igneous Rock Series of Minnesota .. Upper Keweenawan Sandstones...Monzonite .. . ....... 112 Hillman Tonalite ......... . . ... 112 Freedhem Tonalite ........ . · .112 Isle Quartz |  | | Journal (article/letter/editorial) | | January 1989) ABSTRACT Experiments at 15 kb in the tonalite-peridotite-H20 system provide information on some...added to powdered natural samples of tonalite, and mixtures of tonalite with 5 or 10 wt.% peridotite added...analyses could be obtained. Experiments on the tonalite alone show either liquidus garnet, for samples...peridotite added to tonalite. Glass analyses of partially crystallized tonalite define a crystallization...glasses from partially crystallized mixtures of tonalite with 5 or 10 wt.% peridotite added define a liquid |  | Koroteev, V. A., Ogorodnikov, V. N., Sazonov, V. N., Polenov, Yu. A. (2008) Promising ore suture zones of the Urals: Genesis, minerageny, and applied implications. Doklady Earth Sciences, 421 (1) 729-733 doi:10.1134/s1028334x08050036 | Journal (article/letter/editorial) | | (460–430 Ma); and PGEs (420 Ma). Gold is hosted in rock complexes of all geodynamic settings known in the...multiple anatexis of basic rocks that now underlie tonalite–granodiorite plutons. Granitoids are crosscut...host rare metal and ruby occurrences, veins with rock crystals, and occasional gold mineralization hosted...in both reducing alkaline and acid media, whereas rock crystals are accumulated only in the acid environment...rocks with elevated silica content. Gold and rock crystal can be formed in the common hydrothermal system |  | | Catalog/List | | invited. ABBREVIATIONS used in this catalog xl -crystal xlled -crystalled xlline - crystalline xllized...············································ 28 ROCK AND MINERAL COLLECTIONS······················-·...Black glassy crystals imbedded in camptonite dike rock .................. . TREMOLITE Calcium magnesium...Mountains, Marysvale ~ink crystalline mass, same crystal vugs .... AMBL YGONITE Sodium lithium aluminum... Arassuahy Transparent brown-green pleochroic crystal prisms ¼"to ½" $. 25 each 5/$1. 00 ....... Czechoslovakia |  | | Journal (article/letter/editorial) | | a Institute of Mineralogy, Geochemistry, and Crystal Chemistry of Rare Elements, Moscow, 121357 Russia...alkalinity in the form of central-type plutons with crystal-bearing chamber pegmatites; rare-metal Li–F granite...alkalinity in the form of central-type plutons with crystal-bearing chamber pegmatites occasionally with indications...high-pressure ceramic and uranium–REE pegmatites hosted in rock sequences metamorphosed under amphibolite- and granulite-facies...meaning of the term pegmatite, which implies both the rock and geological body depending on context. Following |  | | Journal (article/letter/editorial) | | meta somatic column consists of quartz–kaolinite rock, which is confused in many cases with products of...the Urals. (1) Leucogranite; (2) plagiogranite, tonalite, quartz diorite, and gran odiorite; (3) serpentinite...61 0.85 0.90 3.00 Notes: 1, plagiogranite; 2, tonalite; 3, quartz diorite; 4, granodiorite porphyry dikes;...deviation. deposit is hosted in the plagiogranite–tonalite–quartz diorite intrusion of the same name. This...predominant plagiogranite locally grades into 1 tonalite and quartz diorite (Table 1) . Tonalites and plagiogranites |  | | Journal (article/letter/editorial) | | way for the development of new methods of silicate rock analysis. Rapid and accurate atomic absorption techniqueswere...granites (samplesGH and GA), a basalt (BR), a tonalite (T-1), a syenite (CAAS), a soda-feldspar(NBS 99)...natural quartz crystal (98.4070 SiO2,sample No. 968 of the departmental collection,rock crystal from EIba)...minus 2/6 respectively), increasing slightly with rock acidity. Careful inspection of the sample solutions...granite, GH granite (Roubault, et al., 1966); T-1 tonalite (Commissioner, Geological Survey, P.O. Box 69 | | | Journal (article/letter/editorial) | | J. Min. Petr. Econ. Geol. 89, 87-100, 1994 Crystal morphology complex the of zircon and Mesozoic...***KyushuSangyoUniversity , Matsugadai,Fukuoka813,Japan Crystal forms of zircon in granitoidshave been measuredto...been described petrogenetically by Jeong (1987), rock unit from the viewpoint of tectonic set ting, and...except a part of the Precambrian gneiss com plex. Crystal forms of zircon contained in granitoids varies...technique to describe quanti tatively various crystal forms of zircon, and showed its application (Manuscript |  | | Book | | Golovenok (1977) diagrams were used; for igneous rock determinations, diagrams developed by the USSR Petrographic...formation of “geosynclinal-type” volcanogenicsedimentary rock sequences in troughs. Belts without geosynclinal...Saaniian complex (apparent age > 3.5 Ga) of ancient tonalite gneisses in places including intensely reworked...NW-trending folds. However, many workers consider the tonalite gneisses to be the oldest rocks of this segment...schist whole rock Pb-Pb 27W160 Mints et al. 1982 2. Kachalov assemblage amphibolite whole rock Pb-Pb |  | Koroteev, V. A., Ogorodnikov, V. N., Ronkin, Yu. L., Sazonov, V. N., Polenov, Yu. A. (2009) Polychronity and polygeneity of pegmamtites of gneissic-amphibolitic complexes as a result of continuous-discontinuous development of suture zones: Example of the Ufalei metamorphic block in the Middle Urals. Doklady Earth Sciences, 429 (2) 1443-1446 doi:10.1134/s1028334x09090074 | Journal (article/letter/editorial) | | raremetal (moderately deep), ceramic, and rock crystalbearing (low deep). These pegmatites are usually...collision (380–320 Ma): granitoids (mostly of tonalite–granodiorite formation), metamorphites of zonal...granulomorphous quartz, intrusions of magmatic masses of tonalitegra nodiorite formation with origination in abovetop |  | | Journal (article/letter/editorial) | | kinds of rock that formed in different tectonic settings in the late Neoarchaean [such as tonalite-trond...garnet quartzite, felsic paragneiss, calc-silicate rock, and marble, the protoliths of which formed in a...2012). The Yinshan Block contains abundant Archaean rock units, including greenstones, TTG gneisses, sanukitoids...charnockites (Sample 08XM36, 08XM39), were chosen for whole-rock geochemical, zircon U–Pb age, and Hf isotopic measurements...diagram, the silicic charnockites plot in the tonalite area, whereas the intermediate charnockites plot |  | | Journal (issue) | | nearly pure mass, 1x1 to 2x2, 25c, 35c, 50c; in rock, lxl to 2x3, 15c, 25c, 35c, 50c; xled 2x2 to 3x3...were bright-colored or curious; such as amethyst, rock crystals, garnets, agates, jaspers, and so forth...and as an acid flux. It is best to have this in crystal form. Potassium Bisulphate and Fluorite:— —Three...detecting ferrous iron. It is best to keep this in crystal form and dissolving a little in water as needed...aims to give the reader the ability to recognize crystal forms and especially systems at sight, and with |  | | Book | | to take when handling, identifying or collecting rock and mineral specimens; however, we cannot accept...geological site before entering the site or removing rock and mineral specimens, and note that these may vary...by Anthony Duke. Anthony Duke also supplied the crystal structure diagrams appearing throughout the Directory...photographs were provided by the following: 2 (Granite rock exposed at Tarn (Midi-Pyrenees), France), Nature...Faults 18 Volcanoes 20 Igneous Features 22 The Rock Cycle 24 Flow Igneous Rocks Form 26 Flow Sedimentary |  | | Report (volume) | | Chesterfield, Gosheu. "When I first examined this rock, soon after its discovery by Dr. Hunt in Northampton...Middlefield. " In loose masses lining small cavities in a rock made up of hornblende, augite, and masses of feldspar...Albite. Northampton. Iu veins in the granite lit si quarry south of W. N. Moore's east of Florence, as hollow...hornblende-schist, adjoining granite, east of the soapstoue quarry in North Blandford; (3) in fissures in crushed...closely resembling the forms from the Tyrol, at Ice Rock, a mile below the village of Shelburiie Falls, on |  | | Journal (issue) | | the subject- here we will explore the various crystal shapes and learn about them in more detail. You...an kle-deep in water, miners drill holes in the rock at Taxco silver mine in Mexico. Right: North Sea...which are mined in large quantities from kimberlite rock. In addition, there are vast deposits of anrimony...They tend to be brightly coloured and have fine crystal shapes. Many are used in industry as insecticides...and an attractive crystal shape. Sulphides are good conductors of electricity. CRYSTAL SYSTEM There are |  | | Journal (article/letter/editorial) | | the relict pillow structure (Chen, 2007). A whole‐rock Sm‐Nd age of 2526 ± 43 Ma (Wang, 1993) and a zircon...exposures of Archean rocks (Figure 1a,b), including tonalite–trondhjemite–granodiorite clockwise P–T path...The granite veins are grey in hand specimen. The rock contain poral relationships between successive...and trace element analyse. Major elements were of rock powders was precisely weighed and dissolved by HF/HNO3...Table 2 and plotted in Figure 7. 4.1 | Whole‐rock geochemistry Most zircons from the diorite sample |  | | Catalog/List | | WITHOUT NOTICE Being strictly wholesale, we list only rock types and mineral species that we can supply in...retail fine mineral shop and also took up a route of rock shows and fairs in the western states. In 1966 we...the whole s ale market - scientific supply houses, rock shops, tourist attractions, and museums. In June...represented . . l .j ROCKHOUND ROCK &MINERAL SET MR-4 Contains 13 rock and 1 8 mineral specimens, l" to...each COST $22.50/dozen ROCKHOUND ROCK &MINERAL Contains 7 rock and 11 min e ral s p ecimens , 1/2" |  | García-Casco, Antonio, Rodríguez Vega, A., Cárdenas Párraga, J., Iturralde-Vinent, M. A., Lázaro, C., Blanco Quintero, I., Rojas Agramonte, Y., Kröner, A., Núñez Cambra, K., Millán, G., Torres-Roldán, R. L., Carrasquilla, S. (2009) A new jadeitite jade locality (Sierra del Convento, Cuba): first report and some petrological and archeological implications. Contributions to Mineralogy and Petrology, 158 (1) 1-16 doi:10.1007/s00410-008-0367-0 | Journal (article/letter/editorial) | | jadeitite (jadeite jade). Nephrite jade is a metasomatic rock that forms in a variety of petrologic– geologic...jadeitite deposits where antigoritite forms the wall rock of jade bodies. Harlow and Sorensen (2005) noted...cited only eight ‘‘well documented, primary, hard-rock occurrences’’ of jade. Recently, new jadeitite localities...evolved at depth. This conclusion makes this type of rock of interest for the direct characterization of fluids...the mélange contains a high quantity of pure rock crystal quartz in hydrothermal veins and blocks prospected |  | | Journal (article/letter/editorial) | | one of the last phases to nucleate and that most crystal growth must occur after the magma has exceeded...geologic interpretations of their host plutons. Rigid crystal frameworks form in crystallizing magmas at *50%...dynamic features such as magma flow, crystal avalanching, and crystal sorting and accumulation (e.g., Weinberg...intrusions that have otherwise been ascribed to crystal sedimentation (Boudreau 1995; McBirney and Hunter...magma that undergo convection, crystal settling, stoping, large-scale crystal fractionation and other processes |  | | Book (chapter) | | (charnockites) and Dzheltula granulite facies metamorphic rock assemblages and confirmed a younger age for the...containing inliers of granulite facies mafic schists. Rock index subscripts (e.g. a3, 6,) correspond to cycle...on diopsides (Manuylova, 1968) and by the whole-rock Pb-Pb method (Rudnik et al., 19691, although in...unconforniities in the great majority of the separate rock groups identified in the Aldan Shield demanded the...sequence of geological events. The age status of rock complexes (Fig. 11-9) was established from their |  | | Report (issue) | | ... 7 Gypsum quarries in the northern Faiyum quarry landscape, Egypt: a geo-archaeological case study...fingerprinting of Egyptian siliceous sandstones and the quarry source of the Colossi of Memnon Robert W.O’B. Knox...Sourouzian ........................ 77 Granite quarry survey in the Aswan region, Egypt: shedding new...87 Preservation and promotion of the Sagalassos quarry and town landscape, Turkey Patrick Degryse, Ebru............................ 105 Constructing a quarry landscape from empirical data. General perspectives |  | | Book | | This book provides a basic introduction to the crystal structure of minerals, as well as illustrations...pressures and temperatures. Immense quantities of rock and their constituent minerals are altered and destroyed...crystals are considered to be a mineral called crystal structures. Natural crystals formed by geological...laboratory-grown (synthetic) because they grow in rock. crystals, although identical to their natural...are not considered to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: | | | Book | | This book provides a basic introduction to the crystal structure of minerals, as well as illustrations...pressures and temperatures. Immense quantities of rock and their constituent minerals are altered and destroyed...and these atomic arrangements are called crystal structures. Natural crystals formed by geological...are not considered to be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 cm. Biominerals...considered to be a mineral because they grow in rock. MINERALS: PRODUCTS OF ACHANGING Vanadinite, |
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