Swedish oil shales and metalliferous black shales
SWEDEN
In SWEDEN black brown to black Alum Shales of Middle Cambrian to Lower Ordovician age
Signifi cant resources of kerogen and oil in the shales
Four main economic regions:
Närke OIL POTENTIAL (0.55 billion barrels) with metals U, V, Mo, Ni etc. Östergötland OIL POTENTIAL (2.59 billion barrels) with metals U, V, Mo, Ni etc. Billingen METALS (uranium, up to 1million tonnes, and other metals including oil potential) Jämtland METALS (uranium and other metals) and possible extraction of oil
Närke
From Andersson et al. 1985.
Bedrock geology of the Närke area. The alum shales occur in two main outliers, referred to as East and West
Närke (from Andersson et al. 1985).
Variations in oil yield (Fischer Assay) and content of uranium and kerogen in the western part of the East Närke outlier. (from Anders-
son et al. 1985).
Kvarntorp. Stinkstone in oil-shale, Upper Cambrian (>5 m thick)
Table 1. Quantities of shale, organic matter and oil in alum shales containing more than 10 % organic matter (from Andersson et al. 1985). Table 2. In-situ shale-oil resources for some deposits in the European Union (from Dyni, 2005).
In place shale-oil resources In place shale-oil resources Country million tonnes billion barrels
Italy 10.45 73.0Estonia 2.49 16.3France 1 7Sweden 0.875 6.1United Kingdom 0.5 3.5 Germany 0.286 2
Western part of Europe.
Bedrock geology of the Östergötland outlier (from Andersson et al. 1985).
The alum shales in the Östergötland outlier are illustrated by data from the Nässja drillhole
(from Andersson et al. 1985).
Östergötland
Bedrock geology of the Billingen-Falbygden outlier (from Andersson et al. 1985).
Variation in concentrations of Corg., U, V and Mo in the Alum Shale Formation of the Ranstad area
(from Andersson et al. 1985).
Billingen
Jämtland
Bedrock geology covering the area of southern Storsjön, Jämtland. Line E-F marks profi le E-F
(from Andersson et al. 1985).
Sections through the southern Storsjön area, Jämtland. Note that the allochthonous cover of
sedimentary rocks is thrust over a passive largely undisturbed autochthon suite of Cambrian shales
(from Andersson et al. 1985).
Table 3. Thickness, oil content (Fisher Assay), uranium, (from Hessland & Armands, 1978, Andersson et al. 1985, Bauert & Kattai, 1997, Petersell, 1997, and Tippin & Rex, 1985 Dyni, 2005,
Area/deposit Thickness Oil content U V Mo Ni Zn m % ppm ppm ppm ppm ppm
Närke 12-19 4-8 86-302a unknowna unknowna unknowna unknowna
17 5b 150b 500b 200b 200b 200b
Östergötland 14-24 3.5b 20-269a 400-2700a 120-160a 160-300a 40-300a
Billingen- 8-10 1.5b 95-409c 500-1090c 170-360c unknownc unknownc
Falbygden 680d 270d 270d d 160d 160d d 150d 150d d
Jämtland, Myrviken 152-204 0 170-185e 1500-1870e 288-313e 360-405e 410-430e
Estonia, Dictyonema 0-5 3c 86-162a 350-724a 53-406a 75-185a 170-222a
Kukersite 0.8-2.5 7-23a 2.9c 28c 3c 21c 47.8c
USA,Chattanoga 15-50 (up to 500) 4.5-5a 28-87a 800-1000a 200-400a 600-800a 600c
By hydroretorting it has been shown that the oil yield from the shales is strongly improved.
Licenses held by Continental Precious Minerals Inc. in the Myrviken area, Jämtland, Sweden
a) Min. and max. concentrationsb) Averagec) Min. and max. concentrations over in interval 9-10 m, Middle Cambrian excludedd) Average over an interval of 9-10 me) Average concentration over a width of 152-204 m
Närke shale oil-yield 300 % improvedÖstergötland “ “ “ 300 % improvedBillingen “ “ “ 470 % improved
Central target are with black shales at surface. Black shale exposure in the southern Myrviken project area.
Remarkable high concentrations of a variety of trace elements in the shalesIn particular: uranium, vanadium, molybdenum and nickel
Up to now evaluation of drilling programme has inferred large amounts of metals within license areaaccording to National Instrument 43-101 report, Canada, for the MMS Viken Licence:
Isopach map of the metal richer parts of the black shale formation in the Myrviken area
Uranium as U3O
8: 232 million pounds
Nickel: 417 “ “ Vanadium as V
2O
5: 3994 “ “
Molybdenum as MoO3: 500 “ “
Distribution of elements in a profi le from a thick sequence of black shales in the Myrviken are.Results from analyses of drill core Myrviken 06-008
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Corg. (black) and Sulphur (brown) (%)
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Calcite(%)
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Uranium (red), molybdenum (green) and nickel (lilac)
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Vanadium(ppm)
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ReferencesAndersson et al. 1985: The Scandinavian Alum Shales. SGU (Geological Survey of Sweden) Ser. Ca 56.
Bauert, H. & Kattai, V., 1997: Kukersite oil shale. In A. Raukas & A. Teedumäe (Eds.): Geology and mineral resources of Estonia, p. 313-326. Estonian Academy Publishers, Tallin 1997.Dyni, J.R., 2005: Geology and Resources of Some World Oil-Shale Deposits. USGS, Scientifi c Investigation Report 2005-5294, p. 1-42.
Energy Citation Database – Document # 5169534.Hessland, I. & Armands, G., 1978: Alunskiffer-Underlagsmaterial Geologi. SIND PM 1978:3, Stockholm, p. 1-146.
Petersell, V., 1997: Dictyonema argillite. In A. Raukas & A. Teedumäe (Eds.): Geology and mineral resources of Estonia, p. 327-330. Estonian Academy Publishers, Tallin 1997.Tippin, R.B. & Rex, R.C., 1995: Combined benefi cation and hydroretorting of oil shale. (from Internet) p. 237-246.
Isolines of quantities of uranium in the shale in the Myrviken area (concentrations are multiplied by
thicknesses of the formation)
Isolines of quantities of vanadium in the shale in the Myrviken area (concentrations are multiplied
by thicknesses of the formation)
Isolines of quantities of molybdenum in the shale in the Myrviken area (concentrations are
multiplied by thicknesses of the formation)
Isolines of quantities of nickel in the shale in the Myrviken area (concentrations are multiplied by
thicknesses of the formation)