Database name: |
World Fe-oxide+/-Cu-Au-U (IOCG) deposits |
Compilers: |
Sunil S. Gandhi |
Release date: |
2015-03-04 |
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Deposit name(s): |
Tuolluvaara |
Political location(s): |
Sweden; Province or state: Nörrbotten County; Nearest community: Kiruna Stad (4 km E) |
Deposit clan (type): |
Kiruna-type |
Deposit (sub) types: |
volcanic-hosted; located 4 km east of the giant Kirunavaara deposit, in the rhyolitic units equivalent to the host units of the Kirunavaara deposit; comprises a cluster of deposits in breccia zones.; Reference: 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 stratabound irregular ore bodies, surrounded by mineralized breccias, in a quartz-bearing porphyry; 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: |
past producer; Size category: 40.23 Mt; Status comments: discovered in 1897; underground mining from 1902 to 1982; 65.5 % Fe and 0.5 % P; ore contained 0.5 % Mn, 0.39 % Ti (0.06 to 0.66), 0.03 % V and 0.01 % S |
Geologic province: |
Svecofennian Orogen |
Geologic subprovince: |
Northern Svecofennian |
Geologic district: |
Kiruna (Ore District) |
Deposit object located: |
centre of main deposit |
Commodities: |
Fe; P |
Mineralization styles: |
breccia; massive |
Geological ages: |
Late Paleoproterozoic (mineralization) |
Tectonic setting: |
continental marginal platform-Kiruna Mine sequence; convergent; Formal name: late Svecofennian arc (country rocks) continental arc-Kiruna Mine sequence (host rocks) |
Coincident features: |
brecciation along a stratigraphic horizon (overlain and underlain by quartz porphyries (viz., rhyolites); strike NNE, dip 60° E); Coincident feature name: Kiruna Mine series |
Regional tectonic structure: |
A group of breccia bodies indicaing forceful injection of mineralizing fluids (host rhyo;itic volcanic sequence dips moderately steeply to the east-northeast) Tectonic structure name: Kiruna Mine series |
Host rocks: |
(1) volcanic; felsic volcanic rocks (quartz porphyries); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: unmetamorphosedIndividual lithologies: | quartz porphyry | Host rock stratigraphy: | Kiruna Mine series |
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Country rocks: |
(1) felsic volcanics; (rhyolites and dacites); Country rock name: Kiruna Mine series; Metamorphic grade: unmetamorphosed |
Metallogenic signatures: |
Fe apatite |
Alteration signatures: |
albite-actinolite vein/replacement: veins and breccia filling which lacks magnetite; What was altered: wall rock |
Mineralogy: |
(alteration): serpentine (mineralization): magnetite>>hematite, hematite, apatite, amphibole, biotite, quartz, zircon |
Deposit shape: |
tabularDeposit dimensions: | strike length: 1,000 metres width: 400 metres depth: 200 metres |
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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 |
Frietsch, R., 1978 |
On the Magmatic Origin of Iron Ores of the Kiruna Type |
Economic Geology, Volume 73, p. 478 - 485 |
Frietsch, R.; Papunen, H.; Vokes, F. M., 1979 |
The Ore Deposits in Finland, Norway and Sweden - A Review |
Economic Geology, Volume 74, p. 975 - 1001 |
Parák, T., 1975 |
The Origin of Kiruna Iron Ores |
Sveriges Geologiska Undersökning, Serie C, Arsbok 69, NR 1, Geological Survey of Sweden, Publication code 709, 209 p. |
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. |
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Production data: |
Report period: from 1902 until 1982; 40.23 million metric tons ore; Provisional entry?: yes Percent weights allocated to deposit: 100.0% |
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. |
Estimate date: 1982; 40.231 million metric tons ore; Combined with production?: yes; Provisional entry?: yesGrade-commodity information: | Fe: 65.5 percent S: 0.05 percent | Reference: Anonymous, 2000: Swedish Database of Mineral Deposits; Email Percent weights allocated to deposit: 100.0% |