Pyritic shale

Synsedimentary to Diagenetic Cu±Co Mineralization in Mesoproterozoic Pyritic Shale Driven by Magmatic-Hydrothermal Activity on the Edge of the Great Falls Tectonic Zone–Black Butte, Helena ...

... The geochemical process responsible for expansion of pyritic shales is complex. Attempts were made to model the process using PHREEQC (Hoover and Lehmann 2009), which is a hydrogeochemical...... pyritic ash pulp densities 10 ... Comparative Bioleaching and Mineralogical Characterization of Black Shale-Hosted Ores and Corresponding Flotation ConcentratesSe was found in a weathered pyritic shale, using synchrotron µ-X-ray fluorescence (XRF), X-ray absorption fine structure (XAFS) and XANES, to be present predominantly as Se(IV) with Se(VI) also ...13.19.5.12 Black Shale and Seawater. Black shales and seawater also represent significant reserves of uranium, although economic extraction of uranium from each is a challenge. Uranium in shales resides with organic matter. The uranium contents of black shales are variable but can reach 400 ppm, such as in the Ranstad deposit in Sweden.Jun 17, 2021 · Synsedimentary to Diagenetic Cu±Co Mineralization in Mesoproterozoic Pyritic Shale Driven by Magmatic-Hydrothermal Activity on the Edge of the Great Falls Tectonic Zone–Black Butte, Helena ... This Rock-Eval 6S method for pyritic and organic sulphur quantification was applied on sets of organic rich sedimentary rock samples from the Grey Shale Member in North Yorkshire and from the ...

... The geochemical process responsible for expansion of pyritic shales is complex. Attempts were made to model the process using PHREEQC (Hoover and Lehmann 2009), which is a hydrogeochemical...To test whether this photochemical reaction could have been a geologically relevant process on the early Earth, we repeated our experiments with 2.68 Ga pyritic shale from the Kalgoorlie sequence, Western Australia (fig. S3) at Fe 2+ concentrations that mimicked Archean river water conditions.Jun 29, 2022 · To further investigate pyrite weathering in the late Archean, UV irradiation experiments were conducted with 2.68 Ga pyritic shale. We selected pyrite-bearing shale for this experiment because the emergence of Neoarchean crust above sea level ( 27 , 28 , 53 – 55 ) would have exposed large areas of marine sedimentary rocks for chemical weathering. surrounding pyritic-slate bedrock discharges iron-oxides into this stream, discoloring it red. Nova Scotia Department of Natural Resources, Information Circular ME 067 Acid Rock Drainage in Southwest Nova Scotia L. L. Trudell and C. E. White Acid Rock Drainage (ARD) is a phenomenon that occurs when naturally Se was found in a weathered pyritic shale, using synchrotron µ-X-ray fluorescence (XRF), X-ray absorption fine structure (XAFS) and XANES, to be present predominantly as Se(IV) with Se(VI) also ...rock in civil construction. Case histories of heave due to oxidation of pyritic shale have been reported and continue to be reported worldwide. Examples include widespread structural damage in Pittsburgh, Pennsylvania (Dougherty and Barsotti 1972), and Ottawa, Canada (Morgenstern 1970; Penner et al. 1970); embankment fill problems at This study of three Middle-Late Devonian organic-matter-rich shale successions from across North America documents a unique pyritic preservation style of agrichnia traces.2 on intact and fractured shale samples under various confining pressures to determine the flow characteristic variations upon fracturing of the reservoir. Also, exposure to scCO 2 caused the mechanical weakening of the shale matrix. The uniaxial compressive strength and Young's modulus (E) were reduced after shale-scCO 2 interaction (Lu et al ...

A PYRITIC SHALE FORMATION IS EXPOSED AT A QUARRY FACE. WITHIN THREE YEARS OF EXPOSURE, OXIDATION OF THE PYRITE HAS LED TO IRON OXIDE STAINING AND DEGRADATION OF THE SURROUNDING SHALE. FIGURE 2. A RELATIVELY THICK BEDDING PLANE CONTAINED IN A SHALE FRAGMENT IS PICTURED.Bioturbation is generally sparse, with thin discrete pyritic burrows, while the benthic fauna is dominated by deposit feeding protobranch bivalves. 3. (c) Bituminous shale: a finely laminated sediment with pyritic calcareous concretions, little or no bioturbation, and a benthic fauna which is sparse and entirely epifaunal.The conventional ore horizon in the McArthur River camp is the HYC Pyritic Shale Member in the lower Barney Creek Formation (~ 1640 Ma) within sub-basin architecture. Rosie is contained within a similar sub-basin architecture, but it occurs in the upper Barney Creek Formation.Expansion of Pyritic Shales. Originally published 1972. E. Penner, W.J. Eden, P.E. Grattan-Bellew. Weathering of rock formations containing pyrite--an oxidation process--results in a volume increase associated only recently with basement floor heave in Canada.investigation was designed in part to determine if expansive pyritic shale was a contributing factor to the distress observed at Old Airport Road. The preceding information is based on observations made during a visit to the site on May 1, 2003; conversations with Bill Dennison and Jack Hurlbert, P.E., of the City of BristolThe expansive effects of concentrated pyritic zones within Devonian Marcellus Shale Formation of North America. QJEGH, London 42, 157–164 (2009) CrossRef Google Scholar Longworth, T.I.: Assessment of sulfate-bearing ground for soil stabilisation for built development. Ground Engineering, 56–59 (2004)

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Expansion of Pyritic Shales. Originally published 1972. E. Penner, W.J. Eden, P.E. Grattan-Bellew. Weathering of rock formations containing pyrite--an oxidation process--results in a volume increase associated only recently with basement floor heave in Canada.Previous research at the site of a landslip at Mam Tor, Derbyshire, has linked the oxidation of pyrite in Edale Shale to the generation of acid groundwater. Chemical analysis of surface seepages suggests that reactions occur between this acid water and sedimentary minerals, including clays.Pyritic shale horizons occur along the basin margins, and it is feasible that colloidal iron was introduced by rivers into basin marginal lagoons and then incorporated into microbial mats and reduced to pyrite. The pyritic shales in the Newland Formation show great similarity to those that host the Pb-Zn deposits of Mt. Isa and McArthur River.Vertical surfaces of shale exposed in trenches, disturbance by blasting, or fault zones that allow air penetration horizontally tend to enhance the rate of weathering and lead to very severe conditions. Fills of pyritic materials are particularly subject to accelerated weathering and heaving.

Figure 1 illustrates an artifact, classified as a 'shale axe head', found in Ryedale, Nort. Yorkshire, whose surface is extensively cracked and whose core ...13.19.5.12 Black Shale and Seawater. Black shales and seawater also represent significant reserves of uranium, although economic extraction of uranium from each is a challenge. Uranium in shales resides with organic matter. The uranium contents of black shales are variable but can reach 400 ppm, such as in the Ranstad deposit in Sweden.weathering of pyritic mudrocks in a shale embankment. Quarterly Journal of Engineering Geology 23(4): 365–381. Reid JM, Czerewko MA and Cripps JC (2005) ...We examined the hypothesis that sulfide drives arsenic mobilization from pyritic black shale by a sulfide-arsenide exchange and oxidation reaction in which sulfide replaces arsenic in arsenopyrite forming pyrite, and arsenide (As-1) is concurrently oxidized to soluble arsenite (As+3).rock in civil construction. Case histories of heave due to oxidation of pyritic shale have been reported and continue to be reported worldwide. Examples include widespread structural damage in Pittsburgh, Pennsylvania (Dougherty and Barsotti 1972), and Ottawa, Canada (Morgenstern 1970; Penner et al. 1970); embankment fill problems atThese pyritic shales occur along the margins of the Helena embay- ment, an eastern extension of the Mid-Proterozoic Belt basin. The sediment fill of the Helena embay- ment consists predominantly of rocks of the Lower Belt Supergroup (Harrison, 1972). Pyritic shales from the southern Little Belt Mountains (Fig. 1) were investigated in detail.Gold from sedimentary rocks, especially from carbonaceous pyritic shales, has recently been considered the most important source for the formation of orogenic gold deposits (Pitcairn et al. 2010 ...... pyritic, fissile, brownish black to dark black, often noncalcareous, and organic-rich shales. The shales are very uniform throughout their extents; however ...Pyrite is a common mineral in sedimentary rocks and is widely distributed in a variety of different morphologies and sizes. Pyrite is also widely distributed in the Es3x shale of the Eocene Shahejie …Geochemical evidence for Se mobilization by the weathering of pyritic shale, San Joaquin Valley, California, U.S.A. January 1, 1990 Acidic (pH 4) seeps issue from the weathered Upper Cretaceous-Paleocene marine sedimentary shales of the Moreno Formation in the semi-arid Coast Ranges of California.Pyrite is found in shales worldwide, including the Ordovician Utica Shale which extends from Quebec, Canada, to Tennessee and covers approximately 28,500 square miles. The pyrite in the shale is stable as long as it remains isolated from oxygen in the atmosphere.

It should be applied in adjective form as "micaceous," "chloritic," "glauconitic," and "pyritic." The most common cement terms are given in the chart with the root names. Some typical rock names are "black thin-bedded micaceous shale," "gray massive, medium-grained glauconitic quartz sandstone," "tan siliceous quartz pebble conglomerate," and ...

Named by. James Hall, 1839. The Marcellus Formation or the Marcellus Shale is a Middle Devonian age unit of sedimentary rock found in eastern North America. Named for a distinctive outcrop near the village of Marcellus, New York, in the United States, [3] it extends throughout much of the Appalachian Basin. Fine-grained sedimentary rocks (shale and mudstone) play important roles in global CO2 abatement efforts through their uses in carbon capture and storage (CCS), radioactive waste storage, and shale gas extraction. These different technologies, however, rely on seemingly conflicting premises regarding the sealing properties of shale and mudstone, suggesting that those rocks that lend themselves ...Jan 1, 1994 · A procedure was developed for determining the pyritic sulfur content of the products from physical coal separation processes on the basis of their total sulfur and ash analyses. By assuming that the organic sulfur content in the combustible material in a given coal is constant, a linear relationship was obtained among the pyritic sulfur, total ... Jan Goral. Milind Deo. Scientific Reports (2020) Porosity and permeability are the key factors in assessing the hydrocarbon productivity of unconventional (shale) reservoirs, which are complex in ...Description: The New Albany Shale is composed of brownish-black carbon-rich shale, greenish- gray shale, and minor amounts of dolostone and dolomitic quartz sandstone (Lineback, 1968, 1970; Hasenmueller, 1986). As recognized by Lineback, the formation consists of five members in southeastern Indiana. In ascending order they are: (1) the Blocher ...The Chattanooga Shale in this area of the State has a high pyritic content, which oxidizes into various iron or powder like, (efflorescent) sulphate minerals (Figs. 7 and 8). Commonly called pyrite swelling, it is actually a chemical oxidation reaction between groundwater and pyrite (Fig. 9 a, b, c).Expansive pyritic shales are found in black carbonaceous shales throughout the United States as well as in other countries, including Ireland, England, Norway, Canada, and Sweden. Expansion occurs ...grained pyritic shale, except for a ~25-mm-thick layer of colloform . pyrite intergrown with carbonate. The portion of GMSP-009 ana-lyzed in this study contained 12.2% sulfur and 348 ppm of Cu.USGS (U.S. Geological Survey) National Geologic Map Database. The age of the Bedford Shale and the Berea Sandstone is changed from Late Devonian and Early Mississippian to Late Devonian only (late Famennian) in the Michigan and Appalachian Basins because of the realignment of the Devonian-Mississippian boundary in the United States with the accepted Devonian-Carboniferous boundary in Europe.

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Dolemite rock.

Geochemical evidence for Se mobilization by the weathering of pyritic shale, San Joaquin Valley, California, U.S.A. January 1, 1990 Acidic (pH 4) seeps issue from the weathered Upper Cretaceous-Paleocene marine sedimentary shales of the Moreno Formation in the semi-arid Coast Ranges of California.Shale is mostly made up of clay, so it can range in color from medium brown to white. Shale is often used to make ceramic tiles. Shale colors fall in the neutral color palette and can be paired with blues for a country look, soft pinks for ...rock in civil construction. Case histories of heave due to oxidation of pyritic shale have been reported and continue to be reported worldwide. Examples include widespread structural damage in Pittsburgh, Pennsylvania (Dougherty and Barsotti 1972), and Ottawa, Canada (Morgenstern 1970; Penner et al. 1970); embankment fill problems atpyritic shale is based on the application of state-of-the-art conceptual and numerically modeling tools, and operational considerations. The potentially acid forming material is encapsulated within barren run -of-mine material. A moisture storage and release cover system is employed to control water infiltration on the sloping and horizontalThe Upper Permian Linghao Formation shale is the most potential shale gas exploration target in Nanpanjiang Basin. In this study, X-ray diffraction, field emission scanning electron microscopy, CH4 isothermal adsorption, and nuclear magnetic resonance cryoporometry are intergrated to reveal comprehensive characterization of Linghao Formation shale collected from a well in …Jan 5, 2023 · Foundation Engineering. Pyrite oxidation and expansion in the New Albany black shale have caused serious foundation problems in numerous buildings and structures constructed in the black shale soil horizons in various parts of Kentucky. Pyrite oxidizes, causing various secondary sulfates to form when excavated shale or shale fill is exposed to ... Synonyms for shale include rock, sediment, clay, slate, sedimentary rock, chalk, chemical sedimentary rock, clastic rock, conglomerate and limestone. Find more similar words at wordhippo.com!Antrim Shale - Black shale; gray shale and limestone in lower part · Ellsworth ... pyritic shale. Contains one or more thin-bedded limestones, including the ...The superhigh-organic-sulfur (SHOS) coals are highly enriched in organic sulfur but depleted in pyritic sulfur. The SHOS coals were deposited in sulfur-rich, iron-poor environments, such as carbonate platforms or in an iron-poor and clastic-starved environment in which algae accumulate. ... The non-marine shale, which may be … ….

surrounding pyritic-slate bedrock discharges iron-oxides into this stream, discoloring it red. Nova Scotia Department of Natural Resources, Information Circular ME 067 Acid Rock Drainage in Southwest Nova Scotia L. L. Trudell and C. E. White Acid Rock Drainage (ARD) is a phenomenon that occurs when naturally Hamilton Group including Mahantango Formation - Dark gray, laminated shale, siltstone, and very fine-grained sandstone; thickness 600 feet in west, increases to 1,200 feet in east, and Marcellus Shale - Gray-black, thinly laminated, pyritic, carbonaceous shale; thickness 250 feet in east, increases to 500 feet in west. DEAN D. DUBRE, MUMTAZ A. USMEN, and LYLE K. MOULTON Expansive pyritic shales have caused untold amounts of damage to civil infrastructure throughout the world. The traditional characterization of potentially expansive pyritic shales only considers the presence of finely disseminated microscopic pyrite and references to case histories. The research presented in this paper shows that concentrated ...Aug 18, 2021 · The conventional ore horizon in the McArthur River camp is the HYC Pyritic Shale Member in the lower Barney Creek Formation (~ 1640 Ma) within sub-basin architecture. Rosie is contained within a similar sub-basin architecture, but it occurs in the upper Barney Creek Formation. Foundation Engineering. Pyrite oxidation and expansion in the New Albany black shale have caused serious foundation problems in numerous buildings and structures constructed in the black shale soil horizons in various parts of Kentucky. Pyrite oxidizes, causing various secondary sulfates to form when excavated shale or shale fill is exposed to ...Structural damage to buildings and other civil infrastructure by expansive pyritic shale is becoming increasingly prevalent as construction continues to expand into undeveloped areas as engineering knowledge of the damaging effects of building on or with this material remains inadequate. Establishing a database of case studies regarding ...Pyrite is a common mineral in sedimentary rocks and is widely distributed in a variety of different morphologies and sizes. Pyrite is also widely distributed in the Es3x shale of the Eocene Shahejie …gypsum and iron sulfate, the latter usually resulting from oxidation of pyritic sulfur during storage. Pyritic and organic sulfur together account for the large majority of sulfur in coal. The ratio of the two forms as a function of total sulfur content is shown in Figure 1, where 35 coal samples from major coal producing countries are used.PDF | Expansive pyritic shales are found in black carbonaceous shales throughout the United States as well as in other countries, including Ireland,... | Find, read and cite all the research... Pyritic shale, [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1]