Deposit number | Country | Location | Names | Commodities |
49 | Sweden (Nörrbotten County) | 68.13.22 N -- 019.42.32 E | Nakerivaara | Fe; P |
Database name: | World Fe-oxide+/-Cu-Au-U (IOCG) deposits | ||||||
Compilers: | Sunil S. Gandhi | ||||||
Release date: | 2015-03-04 | ||||||
Deposit name(s): | Nakerivaara | ||||||
Political location(s): | Sweden; Province or state: Nörrbotten County; Nearest community: Kiruna (52 km NW) | ||||||
Deposit clan (type): | Kiruna-type | ||||||
Deposit (sub) types: | stratiform dissemination zone 1.5 km long trending NNW, 20 m thick in the south and up tom 100 m in the north, with ore breccias in oligoclase-diorite, syenite and granite dykes in the southern part; 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: 12.7 Mt; Status comments: discovered in 1897; noi mining; estimated resources of 12.7 Mt averaging 31 % Fe, 0.3 % P, 0.004 to 0.1 % S, 3 % SiO2, < 0.5 % CaO, 0.3 to 1 % Al2O3 and 0.063 to 0.24 % TiO2; magnetite > hematite | ||||||
Geologic province: | Svecofennian Orogen | ||||||
Geologic subprovince: | Northern Svecofennian | ||||||
Geologic district: | Svappavaara (Ore District) | ||||||
Commodities: | Fe; P | ||||||
Mineralization styles: | dissemination; breccia-fillings | ||||||
Geological ages: | Late Paleoproterozoic (mineralization) Late Paleoproterozoic (host rocks) | ||||||
Host rocks: | (1) volcanic; intermediate volcanic rocks (intermediate volcanic rocks intruded by diorite, syenite and granite dykes); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: lower amphibolite
(2) intrusive; gabbro-diorite suite (oligoclase-diorite in the southern part of the deposit); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: greenschist (3) intrusive; syenite suite (dykes in volcanic unit in the southern part of the deposit); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: greenschist (4) intrusive; granite suite (dykes in volcanic unit in the southern part of the deposit); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: none | ||||||
Metallogenic signatures: | Fe | ||||||
Alteration signatures: | potassic alteration: biotite; What was altered: mafic silicates hematization: hematite; What was altered: magnetite | ||||||
Mineralogy: | (alteration): actinolite, tremolite, biotite (mineralization): magnetite>hematite, apatite | ||||||
Deposit shape: | tabular
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References: |
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Resource data: |
12.7 million metric tons ore; Combined with production?: no; Provisional entry?: yes
Percent weights allocated to deposit: 100.0% |