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): |
Mertainen |
Political location(s): |
Sweden; Province or state: Nörrbotten County; Nearest community: Svappavaara (14 km NW) |
Deposit clan (type): |
Kiruna-type |
Deposit (sub) types: |
stratiform massive ore lenses in trachytes or alkali-rich rhyolites; with associated veins, and surrounded by ore breccias that decrease in Fe-content outward; Reference: Lundberg, B.; Smellie, J., 1979: Painirova and Mertainnen Iron Ores - Two Deposits of Kiruna Ore Type in Northern Sweden; Economic Geology, Volume 74, p. 1131 - 1152 |
Deposit status: |
suspended; Size category: 166 Mt |
Geologic province: |
Svecofennian Orogen |
Geologic subprovince: |
Northern Svecofennian |
Geologic district: |
Svappavaara (Ore District) |
Commodities: |
Fe; P |
Mineralization styles: |
massive; breccia; veins |
Geological ages: |
Late Paleoproterozoic (mineralization) Late Paleoproterozoic (host rocks) |
Coincident features: |
stratification in host sequence (mineralization in trachytic flows, rich in alkalies); Coincident feature name: Kiruna Porphyries breccia (extensive breccia with magnetite matrix around massive magnetite lenses in trachytic host rocks); Coincident feature name: Ore breccia amygdules (quartz amygdules in trachytes partly or wholly replaced by magnetite and tourmaline) |
Host rocks: |
(1) volcanic; felsic volcanic rocks (trachyitic flows, associated with andesites); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental arc; Metamorphic grade: greenschist-amphiboliteExternal host rock forms: | porphyritic and amygdaloidal | Host rock protoliths: | trachytes (plagiclase porphyritic; contains quartz amygdules with or withour iron-rich rim; referred to as syenitic porphyry in older literature); Host rock protolith name: Kiruna Porphyries | Internal host rock structures: | indistinct layering | Individual lithologies: | alkali-rich rhyolites (host rock of iron oxide mineralization; quartz amygdules replaced partially or wholly by magnetite and tourmaline ) | Host rock stratigraphy: | Kiruna Porphyries |
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Metallogenic signatures: |
Fe |
Mineralogy: |
(alteration): biotite, scapolite, martite (mineralization): magnetite, apatite, actinolite |
Deposit shape: |
crescent-shapedDeposit dimensions: | length: 1,300 metres width: 250 metres depth: 500 metres |
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Qualified comments: |
(Applies to: discovery and development) Discovered in 1897, with Painirova deposit using dip needle; resources comprise 11 % massive ore, 28 % magnetite-rich breccia and 61 % magnetite-poor breccia, averaging 61, 40 and 28 % Fe respectively. Test mined during 1956-1959; ore production of 432 tonnes; regarded as a significant prospect; ore low in P averaging about 0.05 %, but in parts of the deposit 0.2-0.9 % P; Ti less than 1 %, in sphene. |
References: |
Anonymous, 2000 |
Swedish Database of Mineral Deposits |
Email |
Eriksson, B.; Hallgren, U., 1975 |
Description of the Geological Maps Vittangi N.W., N.E., S.W. and S.E. with an Appendix on Geophysical Aspects by Herbert Henkel |
Sveriges Geologiska Undersökning, Serie Af., No. 13-16, Geological Survey of Sweden, 203 p., 8 maps. |
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. |
Geijer, P.; Ödman, O. H., 1974 |
The Emplacement of the Kiruna Ores and Related Deposits |
Serie C, Sveriges Geologiska Undersokning, Geological Survey of Sweden, Publication code 700, 48 p. |
Lundberg, B.; Smellie, J., 1979 |
Painirova and Mertainnen Iron Ores - Two Deposits of Kiruna Ore Type in Northern Sweden |
Economic Geology, Volume 74, p. 1131 - 1152 |
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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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: 1959; 166.432 million metric tons ore; Combined with production?: yes; Provisional entry?: yesGrade-commodity information: | Fe: 40 percent S: 0.017 percent | Reference: Anonymous, 2000: Swedish Database of Mineral Deposits; Email Percent weights allocated to deposit: 100.0% |