Deposit number | Country | Location | Names | Commodities |
3 | Sweden (Nörrbotten County) | 67.38.60 N -- 020.59.42 E | Gruvberget Cu; Gruvberget | Cu; Co; Au; Mo |
Database name: | World Fe-oxide+/-Cu-Au-U (IOCG) deposits | ||||||
Compilers: | Sunil S. Gandhi | ||||||
Release date: | 2015-03-04 | ||||||
Deposit name(s): | Gruvberget Cu; Gruvberget | ||||||
Political location(s): | Sweden; Province or state: Nörrbotten County; Nearest community: Luleä | ||||||
Deposit clan (type): | Cloncurry-type | ||||||
Deposit (sub) types: | polymetallic veinlets and schlieren cutting trachytic to basaltic volcanic rocks of the Kiruna Porphyry Group in contact zone of a large massive magnetite-apatite ore body; 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 | ||||||
Deposit status: | past producer; Size category: small | ||||||
Geologic province: | Svecofennian Orogen | ||||||
Geologic subprovince: | Northern Svecofennian | ||||||
Geologic district: | Svappavaara (Ore District) | ||||||
Commodities: | Cu; Co; Au; Mo | ||||||
Mineralization styles: | disseminated; veinlets | ||||||
Geological ages: | Late Paleoproterozoic (mineralization) Early Proterozoic (host rocks) Late Paleoproterozoic (host rocks) | ||||||
Host rocks: | (1) volcanic; intermediate volcanic rocks (scapolitization); Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: continental; Metamorphic grade: greenschist
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Metallogenic signatures: | Cu | ||||||
Alteration signatures: | skarn: garnet, epidote, calcite; What was altered: host rocks scapolitization: scapolite ; What was altered: feldspars epidotization: epidote; What was altered: mafic silicates potassic alteration: microcline; What was altered: feldspar hematization: hematite; What was altered: magnetite | ||||||
Mineralogy: | (alteration): scapolite, tremolite, actinolite, amphibole, epidote, microcline (mineralization): bornite, chalcopyrite, cuprite, covelline, malachite, azurite, pyrite, arsenopyrite, erythrite, molybdenite, gold, copper, native, calcite | ||||||
Qualified comments: | (Applies to: discovery and development) Copper ore was mined from 1640 to 1741; located in the contact zone of the larger Kiruna-type Gruvberget Fe deposit containing 74.08 Mt of iron ore; average Cu grade mined was 0.5 %, with 1 % S | ||||||
References: |
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