CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
19 Sweden (Nörrbotten County) 67.44.31 N -- 021.11.15 E Tervaskoski E Fe; Cu
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Tervaskoski E
Political location(s): Sweden; Province or state: Nörrbotten County; Nearest community: Kiruna
Deposit clan (type): Iron Skarn-type
Deposit (sub) types: Tervaskoski E, N and S deposits are stratiform iron deposits similar to 8 others in the Vittangi Greenstone Group at the margin of a granodiorite intrusion; alteration typical of iron skarns; Reference: Zitzmann, A. (Editor(s)), 1978: The Iron Ore Deposits of Europe and Adjacent Areas: Explanatory Notes to the International Map of the Iron Ore Deposits of Europe, 1:2,500,000 (Lists and Tables); International Geological Congress, Commission for the Geological Map of the World, Subcommission for the Metallogenic Map of the World, Bundesanstalt fur Geowissenschaften und Rohstoffe, Postfach 51 01 53, D-3000 Hannover 51, Volume II, 386 p.
Deposit status: significant prospect; Size category: 30 Mt
Geologic province: Svecofennian Orogen
Geologic subprovince: Northern Svecofennian
Geologic district: Vittangi (Ore District)
Commodities: Fe; Cu
Mineralization styles: stratiform massive magnetite layers; banded
Geological ages: Late Paleoproterozoic (mineralization)
Late Paleoproterozoic (host rocks)
Coincident features: bedding in host strata (Stratiform massive and banded deposit); Coincident feature name: Marble-graphitic schists
Host rocks: (1) metamorphic; metavolcanic gneiss (intermediate to felsic volcanics); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: amphibolite; Component: foot wall
Host rock protoliths:intermediate-felsic volcanic rocks
Individual lithologies:skarn

(2) sedimentary; mudstone-carbonate-sandstone (associated with volcanics below and limestone above); Depositional setting: continental; Metamorphic grade: greenschist-amphibolite
Individual lithologies:shale (graphitic)
marl
sandstone
Host rock stratigraphy:Vittangi Greenstone Group

(3) sedimentary; carbonate (Upper Schist: metasedimentary); Depositional setting: carbonate platform; Metamorphic grade: greenschist-amphibolite
Host rock stratigraphy:Vittangi Greenstone Group
Metallogenic signatures: Fe-Cu
Alteration signatures: skarn: diopside, tremolite, actinolite and calcite; What was altered: calcareous sediments, volcanics
serpentinization: serpentine, talc
Mineralogy: (alteration): tremolite, actinolite, diopside, calcite, chlorite, serpentine, talc
(gangue): pyrite, pyrrhotite
(mineralization): magnetite
Qualified comments: (Applies to: discovery and development) The Tervaskoski deposits were discovered at the beginning of the 20th century, like the others in the Vittangi district, but they have not been mined to date. Tervaskoski E, N and S deposits contain estimated 30 Mt, which is nearly 50 % of the known iron resources in the Vittangi ore district; average ore grade: 48 % Fe, 0.1 % P, 0.1 % Cu and 3 % S.
References:
Anonymous, 2000
Swedish Database of Mineral Deposits
Email

Carlon, C. J., 2000
Iron Oxide Systems and Base Metal Mineralisation in Northern Sweden
Section Eurasia and Africa, in Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective, Volume 1, Edited by Porter, T. M., Australian Mineral Foundation, Adelaide, Australia, PGC Publishing, Adelaide, 349 p, p. 283 - 296

Zitzmann, A. Editor(s)), 1978
The Iron Ore Deposits of Europe and Adjacent Areas: Explanatory Notes to the International Map of the Iron Ore Deposits of Europe, 1:2,500,000 (Lists and Tables)
International Geological Congress, Commission for the Geological Map of the World, Subcommission for the Metallogenic Map of the World, Bundesanstalt fur Geowissenschaften und Rohstoffe, Postfach 51 01 53, D-3000 Hannover 51, Volume II, 386 p.

Resource data:
Disclaimer - Reserves/Resource Data

Her Majesty the Queen in Right of Canada, represented by the Minister of Natural Resources (NRCan) does not warrant or guarantee the accuracy, completeness or fitness for any purpose of Reserve and Resource information (Data) contained in this database, including whether the Data is compliant with any securities regulations or standards, and NRCan does not assume any liability with respect to any damage or loss incurred as a result of the use made of the Data.

Resource and reserve figures are historical in nature. The Data source provided with each set of figures should be cited if the Data are re-reported.

30 million metric tons ore; Combined with production?: no; Provisional entry?: yes
Grade-commodity information:Fe: 48 percent
Cu: 0.1 percent
P: 0.05 percent
S: 3 percent
Reference: Anonymous, 2000: Swedish Database of Mineral Deposits; Email
Percent weights allocated to deposit: 100.0%

Generated 2015-03-04 14:16:59 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
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