 | | Journal (article/letter/editorial) | | magmatic system at Wahmonie. Hydrothermal activity at Bare Mountain took place during the main magmatic stage...continued into the Timber Mountain magmatic stage. Bare Mountain contains gold-rich, disseminated Carlin-type...sedimentary and igneous rocks. In northern and eastern Bare Mountain, mineralization is associated with felsic...shallow Carlin-type gold deposits seems likely at Bare Mountain. Sedimentary-rock-hosted mineralization...Gold-silver deposits in the areally extensive Bullfrog district comprise the largest known precious-metal resource |  | | Journal (article/letter/editorial) | | 1007/s00410-012-0751-7 ORIGINAL PAPER Variation of illite/muscovite 40Ar/39Ar age spectra during progressive...micron to submicron grain-sizes of correlative illite- and muscovite-rich Cambrian pelitic rocks from...and precipitation/recrystallization of neoformed illite. While recognizing the importance of these processes...results suggest that complete resetting of the illite/muscovite Ar Communicated by T. L. Grove. Electronic...metamorphism of pelitic rocks at which neo-formed illite/muscovite crystallites typically surpass the size |  | Calero, Julio, García-Ruiz, Roberto, Torrús-Castillo, Milagros, Vicente-Vicente, José L., Martín-García, Juan M. (2022) Role of Clay Mineralogy in the Stabilization of Soil Organic Carbon in Olive Groves under Contrasted Soil Management. Minerals, 13 (1) 60 doi:10.3390/min13010060 | Journal (article/letter/editorial) | | groves, under two contrasting management systems (bare soils versus soil under cover crops) and parent...these soils were poorer in smectite phases than the bare soils. This also would explain why the biochemically...different Mediterranean soils, rich in smectite and illite, with a commercial humic acid. These authors found...Conventional tillage, where soils are usually left bare by mechanical and/or chemical ploughing, still predominates...grove with a long continuous history (>20 years) of bare soils (B); an olive grove that was comparable (similar |  | | Report (chapter) | | of their mineralogy, especially with regard to illite, chlorite and kaolinite. The Advanced Spaceborne...early spring image shows large areas covered by bare (ploughed) soils, with high contrasts in soil moisture...clearly enhances areas of high moisture content in bare soils: examples are circled in Figure 3. Image...near-IR (VNIR) bands allowed the production of a bare-soil mask image. The specific area of interest (AOI)...classification of clayey soil was then performed only on the ‘bare-soil image’ corresponding to argillaceous molasse |  | | Report (issue) | | Sample mineralogy: quartz, 75%; adularia, 20% illite, 5%, trace pyrite Analytical data: 4°Ar/39Ar= 3...Sample mineralogy: quartz, 75%; adularia, 21%; illite/muscovite, 4%. Analytical data: K2O = 11.19%, 40Arrad...116° 43.1 1 W; SE/4 Section 16, T 11 S, R 47 E; Bare Mtn., 15' quadrangle, Nye Co., Nevada. Collection...Sample mineralogy: quartz, 80%; adularia, 18%; illite-montmorillonite, 1%; FeOx 1%. Analytical data:...Sample mineralogy: quartz, 80%; adularia, 18%; illite-montmorillonite, 1%; FeOx 1%. Analytical data: |  | | Journal (article/letter/editorial) | | classical stalactitic structure; that is, a hollow, central tube with concentricgrowthlayersis lacking.Instead...symmetryto the mineraldepositand a vuggyor open central core doesnot exist. FIG. 15. A. Crossstratificationat...surfacedrainageof meteoric waters. Karst can either be bare or covered. FIG. 19. Contactbetween northerly dipping...dolomite at Nanisivik main orebody. In areasof bare karstthe solublebedrockis exposed to the atmosphere...overlyingcoverrock.In general, interstratalholokarstrequiresboth bare karst areas,forrechargeanddischarge o.fthe karst-forming |  | | Journal (article/letter/editorial) | | Beurlen et al, 2011). In Mozambique the Alto Ligonha District (Zambezia Province) is synonymous with one of...pegmatite to be easily identified in the landscape laid bare after a partial retreat of the ice (Pauly, 1992)...(REE)-Be-Nb/Ta pegmatite from the Alto Ligonha District, Zambezia Province, Mozambique, is surrounded...well represented by the steppe spreading across Central Asian interior countries, well exemplified by the...periglacial zone (Fig. 6h). The Khumbu Pegmatite District in the Himalaya Mts., Nepal, typical of a mountainous |  | | Journal (article/letter/editorial) | | pre-Cheltenham rocks. Fireclays of the northern district consist mainly of poorly ordered kaolinite, with...fine-grained detrital quartz. Clays of the southern district were subjected to extreme leaching that produced...Refractory clays and diaspore deposits of east-central Missouri are contained within the Cheltenham Formation...Keller and Keller D D Northern Obb'kt Souu.m District N t MISSOURI Figure 1. Map of Missouri showing...southern district determined the difference between materials in the 2 districts. Northern District The Cheltenham |  | | Report (volume) | | Montmorillonite group_____________________________________ Illite, or hydrous mica, group_ _ _ _ __ __ _ _ _ _ __...mudstone_______________ 3. Differential thermograms of illite, montmorillonites, kaolinite, and kaolinite-di...powder diffractograms of a chlorite-illite mixture, and of intermixed illite and expanding clay-----------------8...distributed eastward from central Utah, through southwestern Colorado, and into central New Mexico. The stratigraphic...that were nonproductive although within a mining district, and some from presumably barren areas which might |  | | Journal (article/letter/editorial) | | however brick making is predominant throughout Central Asia, due to the prevalence of clay or loess in...Along with India, Nepal, and other countries in Central Asia, Afghanistan has traditionally had a substantial...and are built in an elliptical shape around a central ventilation area. The annular space between the...technology has largely been replaced by the larger central stack of the FCBTK, improving the power of the...make it difficult to retain workers. Throughout Central Asia, brick kiln workers constitute one of the |  | | Report (issue) | | SURVEY PROFESSIONAL PAPER Sand Dunes on the Central Delmarva Peninsula, Maryland and Delaware By CHARLES...Denny, Charles Storrow, 1911Sand dunes of the central Delmarva Peninsula, Maryland and Delaware. (Surface...Parsonsburg Sand, central Delmarva Peninsula——————— Sketch showing parabolic dunes, central Delmarva Peninsula...THE MIDDLE ATLANTIC STATES SAND DUNES ON THE CENTRAL DELMARVA PENINSULA, MARYLAND AND DELAWARE By CHARLES...ancient sand dunes are present in parts of the central Delmarva Peninsula, Maryland and Delaware. Many |  | | Report (volume) | | Geology and Mineralogy Department, Royal Museum for Central Africa, Leuvensesteenweg 13, B-3080 Tervuren, Belgium...programme was conceived by the US Air Force and Central Intelligence Agency, to take pictures from space...High-coherence level remains over urban areas and on bare surface at top of Rungwe (middle-right). (d) Coherence...Sources of two large volume ignimbrites in the Central Andes: some LANDSAT evidence. Journal of Volcanology...identification of potentially active volcanoes in the Central Andes. Remote Sensing of Environment, 28, 245– |  | | Report (chapter) | | Formation from Roding River; Stephens Subgroup from Bare Peak (see Fig. 11.1). of the Windley River in Southland...Formation and the Acheron Lakes Formation, all from near Bare Peak (NE Southland). A sample was included from...fine-grained sandstone–siltstone, Cerberus Formation, Bare Peak, Southland. (i) Silty mudstone with fine tuffaceous...Upukerora Formation to 8% in the Waiua Formation. Illite is detected in all samples, other than the Little...hematite (3%), clinochlore (17%), chlorite llb and illite (5%). Lawsonite is abundant (10%). The red iron-rich |  | Buatier, M.D., Guillaume, D., Wheat, C.G., Hervé, L., Adatte, T. (2004) Mineralogical characterization and genesis of hydrothermal Mn oxides from the flank of the Juan the Fuca Ridge. American Mineralogist, 89 (11) 1807-1815 doi:10.2138/am-2004-11-1227 | Journal (article/letter/editorial) | | Mn-oxides formed on such outcrops (Zona Bare and Grinin Bare). These oxides are either black-layered...hydrothermal Mn oxides crusts from Zona and Grinnin Bare outcrops (Fig. 1). Some of the sediments cored near...from cores 71GC, 79GC, and 85GC (Zona Bare), and 19GC (Grinnin Bare), each located near an apparent spring...Ridge 200 km 48 20' 00"N E xplorer R idge ZONA Bare S ovanco F racture Zone V ictoria 00 s ca outcrops...H AME R IC A 47 40' 00"N G orda R idge GRININ Bare 40° S an Andreas F ault 130° W 126° 47 20' |  | | Book | | zone. The Borrowdale Volcanic Series: In the Lake District the Skiddaw Slates are followed by a thick series...Series by an angular unconformity in the Lake District and it is probable that a similar relationship...easterly extension of the Ellergill Beds, the central division of the Skiddaw Slates of the Cross Fell...outliers on the high watersheds in the western and central part of the region and these coalesce eastwards...deposits are present in the Northern Pennines. The central region of both the Alston Block and the Askrigg |  | | Journal (article/letter/editorial) | | and illite (homo-ionized, Na–Ca) Standard illite Purified Na–Smectite (FEBEX) and Na–Illite (Illite du...Na–Smectite (FEBEX) and Na–Illite (Illite du Puy) Illite du Puy (purified) Illite du Puy Illite Opalinus clay Boom...(94;3;3) Full model (96;2;2) Full model (98;1;1) bare 001, full model 0.08 diffuse layer potential in...cannot be characterized so easily in terms of their bare charging properties. While streaming potential measurements...covered, notably no data were available covering the bare uranyl quartz system in the pertaining 10 mM NaNO3 |  | | Report (issue) | | in Soil of the West End Creek Area, Yellow Pine District, Valley County, Idaho : ,;.·' Gold Anomaly...in Soil of the West End Creek Area, Yellow Pine District, Valley County, Idaho By B. F. leonard GEOLOGICAL...in Soil of the West End Creek Area, Yellow Pine District, Valley County, Idaho By B. F. leonard northeast...anomaly in the West End Creek area, Yellow Pine district, Valley County, Idaho, was found by soil sampling...is varied. The slope north of West End Creek is bare, supports small grasses, or has widely spaced conifers |  | | Journal (article/letter/editorial) | | plates of centimeter-size "isinglass," whereas illite, even where well ordered, grows in its environment...micrograph ofkaolinite, Blackwell mine, Cornwall district, United Kingdom. Figure 15. Mexico. Scanning...environment, smectite underclay was altered through an illite transition to kaolinite flint clay in Illinois...Genetic processes by which illite is crystallized include authigenesis, wherein illite "ribbons" grow in pores...quantities of illite have formed in environments in which smectite was converted to illite, as during the |  | | Journal (article/letter/editorial) | | diverse depositional settings in Biyang depression, Central China 1 Institut de Minéralogie et de Physique...extraordinarily rich reserves located in Zaoxiang Basin, Central China. The main hydrocarbon source rocks in the...Hailaer basin is located in the Ergun massif of the central Asian Orogenic belt between the North China Craton...Conference Abstracts 2010 The OIB signature in Central America: Old lithospheric and young asthenospheric...Wischhofstr. 1-3 D-24148 Kiel, Germany Although most Central American magmas have a depleted MORB-source mantle |  | | Journal (article/letter/editorial) | | are abundant in samples containing borates. (c) Illite and chlorite are found in a disordered manner,...mineralogical analyses can be summarized as follows: (a) Illite has a continuous distribution within the whole...visible in sample E-35. (c) In sample E-71, in which illite is the dominant mineral, the content of MgO is...Sayakci and Rasih Ihsan mines. In the Kestelek area, illite is present in samples with montmorillonite and...sample B-26, which is a mixture of montmorillonite, illite, vermiculite and 14,-14c mixed layer, has important |  | | Journal (article/letter/editorial) | | 2010 NEWMOD+ interstratified systems such as illite-smectite (Wilson et al., 1992; Berkgaut et al....different sites for interlayer H2O above and below the central interlayer cation, at a distance along z of S0...distribution is located at a site S1.2 Å away from the central interlayer cation. Using these positions, together...experimental XRD pattern of an ethylene-glycol solvated illite-smectite (EG) sample can be used to demonstrate...previously characterized as an R = 3 I-S with 90% illite layers (Bish, 1989; Bish and Aronson, 1993). Profile |  | | Journal (volume) | | (Hungary) (Hungary) (Croatia) (Hungary) (Slovakia) (Serbia) (South Africa) (Austria) (France) (Hungary) (Hungary)...problems (eutrophication). Phosphate minerals have a central role in this process, as they are the “gatekeepers”...science (general session) – oral Transformation of illite to K-feldspar on brick clay firing Kristály, F...1 Two varieties of brick clay with chlorite – illite – muscovite dominated phyllosilicate fraction were...present as a continuous series from muscovite to illite. Results are supported by the broadening of the |  | | Report (chapter) | | control on permeability (but not porosity) is platy illite which formed beneath a palaeo-GWC at an early stage...into a high permeability Illite-Free Layer and a deeper, low permeability Illite-Affected Layer. The data...implemented in the mid1980s with the installation of a Central Processing Platform (CPP1), an Accommodation Platform...reserves, particularly from the low permeability Illite-Affected Layer. In addition, interference effects...zone between the northern and Fig. 6. Top Platy Illite Surface. Faults are shown at their mapped positions |  | | Journal (article/letter/editorial) | | organic-lean sediment from Middle Valley a feldspar-quartz-illite mineral assemblage buffered in situ pH. In contrast...concentrations substantially lower than in fluids from bare-rock systems may reflect chemical reequilibration...clay minerals (chlorite, kaolinite, smectite, and illite), and trace amounts of K-feldspar were identified...stability of aluminosilicates such as feldspars and illite, a common alteration product observed both in this...K-feldspar ⫽ K3Al4(OH)4Si5Al3O20 ⫹ 4 Na⫹ ⫹ 16 SiO2. (1) illite quartz Rapid and large changes in measured Na and |  | | Report (chapter) | | West Africa to Central Asia (Fig. 2). Less important sources are the deserts of central Australia, the...mainly from dry lake beds, alluvial fans, wadi beds, bare soils and active dune fields (Coud6Gaussen 1984;...dolomites, dolomitic limestones, lake beds smectite, illite, mixedlayer clays, kaolinite, chlorite soils,...dust storms in North Africa, the Middle East and Central Asia (Yaalon & Ganor 1979; Ganor & Mamane 1982)...precipitation events. Since the main dust sources (excluding bare cultivated soils) are desert interiors where rain |
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