CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
29 Sweden (Nörrbotten County) 67.52.29 N -- 020.13.34 E Luossavaara Fe; P
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Luossavaara
Political location(s): Sweden; Province or state: Nörrbotten County; Nearest community: Kiruna (1 km N)
Deposit clan (type): Kiruna-type
Deposit (sub) types: massive ore body with associated ore breccia along margin; similar to and along the strike of the Kiirunavaara ore body; Reference: 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.
Deposit status: past producer; Size category: 40.5 Mt ; Status comments: discovered in 1736; small scale mining at the beginning of 19th century; open pit and underground mining from 1898 to 1985; orebody pinches uneconomic width below 400 m
Geologic province: Svecofennian Orogen
Geologic subprovince: Northern Svecofennian
Geologic district: Kiruna (Ore District)
Commodities: Fe; P
Mineralization styles: massive; breccia
Geological ages: Late Paleoproterozoic (mineralization)
Tectonic setting: continental marginal platform-Felsic volcanic sequence; convergent; Formal name: Svecofennian, late stage (country rocks)
Coincident features: stratification in host sequence (concordant tabular body between trachyandesite and rhyodacite units); Coincident feature name: Kiruna Mine series
Regional tectonic structure: monoclinal sequence dipping 50 to 60 degrees to the east-northeast (tilting at the end of Svecofennian orogeny ca. 1880 Ma ) Tectonic structure name: Kiruna Mine series
Host rocks: (1) volcanic; intermediate-felsic volcanic rocks (trachyandesite-rhyodacite); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: unmetamorphosed
Individual lithologies:trachyandesite
rhyodacite
Host rock stratigraphy:Kiruna Mine series
Related igneous rocks: (1) intrusive; syenite suite (footwall of the deposit, extrusive or intrusive); Initials: Lower Kiruna mine sequence
Individual lithologies:syenite porphyry (footwall of the deposit, extrusive or intrusive)

(2) intrusive; granite suite (related to small high level granitoid intrusions); Initials: granophyric dykes
Individual lithologies:granophyric dykes (related to small high level granitoid intrusions)

(3) intrusive; granite suite (small high level granitoid intrusions related to the Kiruna Mine series); Initials: granite
Country rocks: (1) felsic volcanics; (rhyolites and dacites); Country rock name: Kiruna Mine series; Metamorphic grade: unmetamorphosed
Individual lithologies:rhyolite-dacite
Metallogenic signatures: Fe-P
Alteration signatures: silicification: quartz; What was altered: wall rock
chloritization: chlorite; dark green strongly schistose bands, a f; What was altered: wall rock
phyllitization: muscovite; What was altered: wall rock
carbonatization: calcite; What was altered: wall rock
tourmalinization: tourmaline; What was altered: wall rcok
barite alteration: barite; What was altered: wall rock
allanite replacement: allanite; What was altered: wall rock
zircon replacement: zircon; What was altered: wall rock
fluorite replacement: fluorite; What was altered: wall rock
hematization: hematite after primary magnetite; What was altered: ore
Mineralogy: (alteration): quartz, chlorite, muscovite, calcite, tourmaline, barite, allanite, zircon, fluorite, hematite
(mineralization): magnetite, apatite, actinolite
Radiometric ages: Object dated: Mineralogy(1); Age - Ma: 1,888; +6; -6; Dating method: U-Pb; Concentrate: titanite; Source rock: magnetite-titanite dyke; Formal name: ore formation event; Event dated: mineralization; Interpretive comment: magnetite dyke is in footwall breccia zone; data confirm age from Kiirunavaara deposit 1 km to S ; Reference: Romer, R. L.; Martinsson, O.; Perdahl, J. A., 1994: Geochronology of the Kiruna Ores and Hydrothermal Alterations; Economic Geology, Volume 89, p. 1249 - 1261
Deposit shape: tabular
Deposit dimensions:strike length: 1,500 metres
thickness: 23 metres
length down-dip: 400 metres
References:
Anonymous, 2000
Swedish Database of Mineral Deposits
Email

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

Frietsch, R., 1982
On the Chemical Composition of the Ore Breccia at Luossavarra, Northern Sweden
Mineralium Deposita, Volume 17, p. 239 - 243

Geijer, P., 1931
The Iron Ores of the Kiruna Type: Geographical Distribution, Geological Character and Origin
Sveriges Geologiska Undersökning, Serie C, Geological Survey of Sweden, Publication code 367, 39 p.

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.

Production data: Report period: from 1925 until 1985; 20.5 million metric tons ore; Provisional entry?: no
Reference: Anonymous, 2000: Swedish Database of Mineral Deposits; Email
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: 1985; 40.494 million metric tons ore; Combined with production?: yes; Provisional entry?: yes
Grade-commodity information:Fe: 61 percent
S: 0.03 percent
Reference: Anonymous, 2000: Swedish Database of Mineral Deposits; Email
Percent weights allocated to deposit: 100.0%

Generated 2015-03-04 14:16:45 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
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