Alum shale is the shale that has most of the properties required for it to be able to contain gas. Within Sweden's borders, it is only in parts of its distribution area in Sk ne where the shale is found at a suitable depth, has a sufficiently high thermal maturity, high organic content and thickness that makes it …
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Aug 01, 2017 the alum shale formation is generally 15–35 m thick but extremely variable, from 2 m in land to 95 m in sk ne. 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 proportions of gray shales and silt …
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 ...
Alum shale in the kvarntorp area, sweden (˛ gure 1), was used for oil production dur-ing 1942-1966. ˜ ere is still untouched alum shale in the area, as well as remains from the production in the form of both burned shale (shale ash) and crushed but otherwise unpro-cessed shale (˛ nes). ˜ e shale …
Uranium beneficiation in sillam e started in 1948. ... the alum shale of sweden contains black shales with anomalously high uranium concentrations in excess of 100 ppm. syngenetic or early ...
Shale from maardu, toolse and other estonian as well as from russian and swedish deposits (local name ‘alum shale’), natural and artificial transfor-mation (beneficiation, extraction, thermal and oxidative destruction) prod-ucts of dictyonema oil shale are visualized using a vankrevelenogram. it is a
Memoir 120: mudstone diagenesis: research perspectives for shale hydrocarbon reservoirs, seals, and source rocks, 2019 pages 83-102 doi: 10.1306/13672212m1213493 chapter 6: pyritization history in the late cambrian alum shale, scania, sweden: evidence for ongoing diagenetic processes
May 04, 2015 from shale oil to biogenic shale gas: retracing organic–inorganic interactions in the alum shale (furongian–lower ordovician) in southern sweden. aapg bulletin , may 2015 doi: 10.1306/10221414014
Oct 01, 2014 1. introduction. the cambrian to ordovician alum shale formation in scandinavia is a classical black shale unit. it has been extensively studied in the past for its organic content (e.g. andersson et al., 1985, buchardt et al., 1997, schovsbo, 2001).the alum shale was deposited prior to the evolution of vascular land plants but contains vitrinite-like particles (buchardt and lewan, 1990) …
H gg n alum shale project: (uranium, base metals, sweden) aee holds 100% of 147km2 over the alum shale uranium province in central sweden. the shale-hosted deposits are also enriched in vanadium, molybdenum, zinc and nickel. h gg n is proximal to key infrastructure and is situated in commercial forestry areas. following a review of
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Most of the black shale uranium is in the south part of sweden, most of the bedrock uranium is the north. as part of the former plans for nuclear weapons in sweden a uranium mine was established in black shale in ranstad, v sterg tland and was operated 1965-1969 at …
The swedish alum shale, as well as estonian graptolite argillite, contains remarkably high concentrations of trace metals such as u, mo, v and ni [22–25]. these black shale layers have been historically exploited for local uranium production in sweden and estonia. for example, in the viken area, sweden, continental precious minerals inc. has
Apr 29, 2020 aura's focus is on the h gg n project, located in sweden's alum shale province, one of the largest depositories of vanadium in the world. on april 21, aura energy announced : extraordinary ...
1 day ago alum shale was mined for oil and uranium production in kvarntorp, sweden, 1942–1966. remnants such as pit lakes, exposed shale and a 100-meter-high waste deposit with a hot interior affect the surrounding environment, with elevated concentrations of, e.g., mo, ni and u in the recipient.
Sep 01, 2003 according to vankrevelenogram, the sweden alum shale is present in all mentioned stages up to the gas coal stage and further to the graphitic stage, characteristic of super-maturity [63]. for comparison, 39 kukersite samples have narrower ranges of h/c and o/c values than dos ones: 1.38-1.57 and 0.12-0.17, respectively, and even the weathered ...
A simple beneficiation process can bring this grade up to a concentrate of circa 2500 ppm u 3 o 8. aura’s development work also continues at the world scale h gg n project, located in sweden’s alum shale province and which is one of the largest deposits of …
During world war ii, shortage of imported fuel led to the search for alternative resources. alum shale exists in several places in sweden, but in most cases the oil content is too low for extraction. svenska skifferolje ab was formed in 1941, and kvarntorp, where the shale contains 4.8% oil, was chosen for production (schwartz 1945).
1 3 int j earth sci (geol rundsch) doi 10.1007/s00531-016-1328-x original paper petroleum source rock evaluation of the alum and dictyonema shales (upper cambrian–lower ordovician) in …
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The scandinavian alum shale underlies large portions of sweden, denmark, and potentially norway. however, a majority of the alum shale is “shallow, thin, and immature.” the alum shale is normally pressured and is characterized by moderately high clay content and structural complexity, making it …
The scandinavian alum shale underlies large portions of sweden, denmark, and potentially norway. 1 however, a majority of the alum shale is “shallow, thin, and immature.” 2 the alum shale is normally pressured and is characterized by moderately high clay content and structural complexity, making it a “high risk play.” 3 the energy information administration estimates that the alum ...
The uranium beneficiation plant in sillam e was established in 1948 and about 22.5 tons of elemental uranium was produced from estonian graptolite argillite. ... even the black shale in sweden (known as alum shale) has historically been used mostly for uranium production, there are rising commercial interests in other metals. ...
1 uranium mineralization in the alum shale formation (sweden): evolution of a u-rich marine black shale from sedimentation to metamorphism andre lecomte1,*, michel cathelineau1, raymond michels1, chantal peiffert1, marc brouand2 1 georessources, universit de lorraine, cnrs, cregu, boulevard des aiguillettes b.p. 70239 f-54506 vandoeuvre l s nancy, france
Rare-earth elements in the swedish alum shale formation: a study of apatites in fetsj n, v sterbotten fredrik engstr m the caledonian alum shales of sweden host a vast number of economically interesting metals. in fetsj n, v sterbotten, the shales contain significant amounts of rare-earth elements, vanadium, molybdenum and uranium.
Detailed diagenetic studies of the late cambrian alum shale in southern sweden were undertaken across an interval that includes the peak steptoean positive carbon isotope excursion (spice) event to evaluate the pyrite mineralization history in the formation. samples were collected from the andrarum-3 core (scania, sweden); here the alum was deposited in the distal, siliciclastic mudstone-rich ...
The alum shale contains lenses of bituminous limestone, as much as 1m in thickness and 25 m or more in length. they are less abundant in the kolm-bearing zone than in beds above and below and are more abundant in shoreward than seaward facies. the shale bedding bends around the limestone lenses bu-t …
In the alum shale of sweden but as early as 1826 hisinger (p. 216) published an analysis of barytes from the alum shale at andrarum in scania. it was not, however, the small, free crystals that he analysed but a concretionary aggregate of the type known already at …
H gg n project (sweden) good thicknesses of mineralised alum shale were intersected in both diamond drill holes completed in march quarter ... december 2013 for beneficiation and leaching of material from the sadi deposit. the hippolyte beneficiation testwork, …
Estonia and sweden: location of the kukersite deposits in northern estonia and russia (locations after kattai and lokk, 1998; and bauert, 1994). also, areas of alum shale in sweden (locations after andersson and others, 1985). more information on estonia and sweden oil shale. enlarge map.
Called ore preparation milling and ore dressing or ore beneficiation ore dressing is a process of mechanically separating the grains of ore minerals from the gangue minerals to produce a concentrate enriched portion containing most of the ore minerals and,what is mineral ore beneficiation.