the Cambrian and Early Ordovician, progressive expansion of the Alum Shale facies took place, displacing coarse-grained facies and TOC lean shales as found in the Bornholm Formation eastwards (Fig ...
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The Alum Shale Formation of Scandinavia was deposited in an epi-continental sea on the western margin of the Baltica continent during the Miaolingian, Furongian and Early Ordovician (Tremadocian) (Nielsen and Schovsbo, 2007).The depositional area covered an area of about 1,000,000 km 2 and included parts of …
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05/03/2024. Supported by. District Metals has applied for eight additional mineral licenses covering a total area of in excess of 90,000 hectares targeting Alum Shale deposits (the …
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Alum shale. Alum shale contains several of the rare and innovation-critical metals used for the development of the green technology needed to respond to the climate transition. At …
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The Alum Shale of Sweden contains black shales with anomalously high uranium concentrations in excess of 100 ppm. Syngenetic or early diagenetic origin of this uranium indicates that organic matter within these shales has been irradiated by decaying uranium for approximately 500 Ma. Radiation-induced polymerization of alkanes through a free …
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Alum shale can also be found in Sweden (see Fig. 1 [14]), where about 460 000 tonnes of shale was mined and burned to produce alum in Degerhamn, Öland during the 18th-19th centuries [19].
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Uranium beneficiation in Sillamäe started in 1948. ... The organic matter in the Alum Shale of Sweden is believed to have been affected post-depositionally by irradiation from the natural decay ...
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Uranium-rich marine black shale with a wide geographic distribution from around Norway to Estonia (Alum Shale Formation, Cambrian and Early Ordovician) …
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The purpose of the present paper is to share some experiences from related historical activities in Sweden where alum shale has been used for oil extraction, burning of lime, alum production and uranium beneficiation. Legacies exist in terms of shale ash and fines as well as residues from the leaching of uranium, in quantities of a total of ...
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In Sweden, the U content of the black shale (Alum shale) regularly reaches up to 300 ppm [19], and in exceptional instances, up to 6000 ppm in some specific organic-rich intervals [20]. The ...
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Alum shale is a sedimentary rock belonging to what are termed the 'black shales'. The Swedish occurrences of alum shale were formed during the latter part of the Cambrian era and up to the first part of the Ordovician era, approximately 540–480 million years ago (Hessland and Armands, 1978). 2.1. Composition and metal content of alum …
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Global Traditional Energy Resources. The Scandinavian Alum Shale underlies large portions of Sweden, Denmark, and potentially Norway. 1. However, a majority of the …
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Shale Beneficiation Process For Sale . chrome ore beneficiation mining costs Grinding Mill China. 201391 »gold mining wash plant escrow for sale beneficiation plant layout, process flow chart, shale .....
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Uranium mineralization in the Alum Shale Formation (Sweden): Evolution of a U-rich marine black shale from sedimentation to metamorphism
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alum shale sweden beneficiation - mine-equipments. A mining practice that represents an alternative to conventional ore beneficiation in that the mineral values ..... A hexagonal mineral, NaBe (sub 4) SbO (sub 7) ; at Laangban, Sweden. ... Applied to those minerals that have the taste of alum. ... When a shaft is sunk through a thick, dry ...
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FACTS – alum shale, the alum shale investigation and exploration. What do you hope to be able to extract from Swedish alum shale? Alum shale can contain …
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Uranium mineralization in the Alum Shale Formation (Sweden): Evolution of a U-rich marine black shale from sedimentation to metamorphism. April 2017. Ore …
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Several large pits were left after alum shale was mined from 1942 to 1966 in the Kvarntorp area of Sweden. Of these, the pit lakes Pölen and Norrtorpssjön are the focus of this study.
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A study was initiated to analyse metal flows from alum shale to the environment in an area in Öland, Sweden. The study was performed by elemental analysis and leaching experiments of alum shale together with analysis of groundwater and surface water samples. The metal concentrations in non-weathered alum shale were much …
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alum shale sweden beneficiation . Mar 29 2021The Alum Shale Formation (also known as alum schist and alum slate) is a formation of black shale of Middle Cambrian to Tremadocian (Lower Ordovician) in age found in southern Scandinavia. It is shale or clay slate containing of pyrite by weathering forms sulfuric acid which acts on potash and ...
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The Alum Shale Formation is generally 15–35 m thick but extremely variable, from 2 m in Öland to 95 m in Skåne.In the Caledonides, the formation is duplicated by thrust sheets and the thickness reaches up to 180 m (Andersson et al., 1985).Scandinavian Alum Shale is dominated by organic-rich (up to 20% TOC) marine black shales, with variable …
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This paper presents an integrated geochemical and petrological study of the Hällekis-1 core from the Furongian (upper Cambrian) Alum shales in central Sweden to characterise organic matter composition, depositional environment, and potential hydrocarbon generation capability. The results show that organic-rich Alum Shale …
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During primarily the 1970s, shale was utilised for beneficiation of uranium by leaching with sulphuric acid. The alum shale in the areas of Närke, Västergötland and Öland (south-central Sweden) has Si, Al and Fe (in oxide form) as the major elements and contain, in addition, around 5–7% S and < 1% Ca figured on the shale itself, disregarding
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For this purpose, the behavior of U, P, Ti and organic matter was studied on a series of representative samples from most Alum Shale prospection zones. In southern …
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Petrographic and geochemical composition of kerogen in the Furongian (U. Cambrian) Alum Shale, central Sweden: Reflections on the petroleum generation potential H. Sanei, H.I. Petersen, N.H. Schovsbo, C. Jiang, M.E. Goodsite PII: S0166-5162(14)00183-9 DOI: doi: 10.1016/j.coal.2014.08.010 Reference: COGEL 2360 To appear in: …
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Several large pits were left after alum shale was mined from 1942 to 1966 in the Kvarntorp area of Sweden. Of these, the pit lakes Pölen and Norrtorpssjön are the focus of this study. They have elevated levels of Na, K, Mg, Ca, Al, Mn, Fe, and sulphate, as well as trace elements, from weathering of the exposed shale. Both lakes had a …
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Alum shale, Sweden: V, Mo, U, Ni, Cu, Co, Zn, Pb, Cr, Mn, Ba (Andersson et al., 1985) Athabaska region, AB, Canada: Ni, Cu, Co, Zn, V, Mo, U, Li (Dufresne et al., 2011) Balasauskandyk, Kazakhstan: V, Mo U, REE: V 2 O 5 0.8–1.2% (Komekova et al., …
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