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Jansson, N., Allen, R. L., Skogsmo, G., Vorbrodt, N. & Bäckström, M. (2019). An updated genetic model for metamorphosed and deformed, c. 1.89 Ga magnesian Zn-Pb-Ag skarn deposits, Sala area, Bergslagen, Sweden. In: Proceedings of the 15th SGA Biennial Meeting, 27-30 August 2019, Glasgow, Scotland, Life with Ore Deposits on Earth: . Paper presented at 15th SGA Biennial Meeting, 27-30 August 2019, Glasgow, Scotland, Life with Ore Deposits on Earth (pp. 166-169). , 1
Open this publication in new window or tab >>An updated genetic model for metamorphosed and deformed, c. 1.89 Ga magnesian Zn-Pb-Ag skarn deposits, Sala area, Bergslagen, Sweden
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2019 (English)In: Proceedings of the 15th SGA Biennial Meeting, 27-30 August 2019, Glasgow, Scotland, Life with Ore Deposits on Earth, 2019, Vol. 1, p. 166-169Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

This contribution presents an updated view on the genesis of stratabound Zn-Pb-Ag mineralization in the Sala area, Bergslagen, Sweden. Integrated legacy and new geological, geochemical and geophysical data reveal that the deposits are hosted by a complex array of magnesian skarn-altered zones in dolomitic marble. These mineralized zones parallel early faults and metavolcanic interbeds in the host marble, and converge downwards in the stratigraphy adjacent to a 1.89 Ga calc-alkaline granite-granodiorite batholith. Prograde alteration involved formation of early barren ferroan diopside- and forsterite-bearing skarns. Mineralization is mainly associated with subsequent alteration to tremolite, chlorite, serpentine, magnetite and calcite. The hydrous associations overlap mineralogically with assemblages formed during subsequent greenschist facies regional metamorphism between 1.87 Ga and 1.8 Ga. However, ferroan diopside and forsterite are unique to the alteration system, and indicate mineralization in conjunction with an early, high T, metasomatic alteration event at 1.89 Ga. The Sala deposits can be classified as Zn skarn deposits, albeit atypical in the magnesian nature of the skarns and the lack of minerals with essential Mn. The Fe and Mn content in magnesian silicates and carbonates is however sufficient to induce clear enrichment haloes of these elements around the deposits. The magnesian nature of the skarns probably reflect formation in a shallow marine continental backarc tectonic setting, and an importance of seawater in early pre-skarn alteration stages, such as dolomitization.

National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-75923 (URN)
Conference
15th SGA Biennial Meeting, 27-30 August 2019, Glasgow, Scotland, Life with Ore Deposits on Earth
Funder
Vinnova
Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-09-20
Jansson, N., Allen, R., Skogsmo, G., Vorbrodt, N. & Bäckström, M. (2019). Geological controls on light dolomite deposits related to polymetallic sulphide deposits, Sala area, Bergslagen, Sweden: insights from whole-rock lithogeochemistry, spectrophotometry and magnetic susceptibility. In: Geophysical Research Abstracts: . Paper presented at EGU General Assembly (pp. 1). , 21, Article ID 9056.
Open this publication in new window or tab >>Geological controls on light dolomite deposits related to polymetallic sulphide deposits, Sala area, Bergslagen, Sweden: insights from whole-rock lithogeochemistry, spectrophotometry and magnetic susceptibility
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2019 (English)In: Geophysical Research Abstracts, 2019, Vol. 21, p. 1-, article id 9056Conference paper, Published paper (Other academic)
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-73454 (URN)
Conference
EGU General Assembly
Projects
VectOre
Funder
Vinnova
Available from: 2019-04-05 Created: 2019-04-05 Last updated: 2019-09-09
Tiu, G., Jansson, N., Wanhainen, C. & Ghorbani, Y. (2019). Sulfide chemistry and trace element deportment at the metamorphosed Lappberget Zn-Pb-Ag-(Cu-Au) ore body, Sweden: Implications for Mineral Processing. In: Life with Ore Deposits on Earth: Proceedings of the 15th SGA Biennial Meeting 2019. Paper presented at 15th SGA Biennial Meeting, 27-30 August 2019, Glasgow, Scotland (pp. 1486-1489). Glasgow, Scotland, 4
Open this publication in new window or tab >>Sulfide chemistry and trace element deportment at the metamorphosed Lappberget Zn-Pb-Ag-(Cu-Au) ore body, Sweden: Implications for Mineral Processing
2019 (English)In: Life with Ore Deposits on Earth: Proceedings of the 15th SGA Biennial Meeting 2019, Glasgow, Scotland, 2019, Vol. 4, p. 1486-1489Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

The 58 Mt Lappberget Zn-Pb-Ag-(Cu-Au) ore body represents one of the largest and most significant polymetallic base metal sulfide deposits in Sweden. The complex mineralogical characteristics of the ore body pose particularly tough challenges for successful production forecast because of the mixed Zn-Pb-Cu base metals, the complex association of the beneficial Ag and Au, and the presence of influential elements such as Sb, Mn and Mg. Thus, a detailed mineralogical characterization study was conducted, focusing on the deportment of trace and minor elements (including credit and penalty elements). Mineral chemistry data derived from electron microprobe and   laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses reveal the complexity in the composition and associations of the ore minerals, consisting of textural and chemical varieties of sphalerite, galena, chalcopyrite, iron sulfides, antimonides and sulfosalts. Recrystallization, re-mobilization and re-concentration of sulfide minerals, compositional banding, and ductile and brittle deformation textures (i.e. deformation twins on sphalerite, brecciation, bent cleavage planes, etc.) are observed throughout the deposit. The mineralogical and textural complexity and heterogeneity of the sulfide ore are reflected in the variability in grades and recovery from the processing plant.

Place, publisher, year, edition, pages
Glasgow, Scotland: , 2019
Keywords
LA-ICPMS, electron microprobe, Garpenberg, mineral deportment
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-75960 (URN)
Conference
15th SGA Biennial Meeting, 27-30 August 2019, Glasgow, Scotland
Projects
MetalIntelligence Project
Funder
EU, Horizon 2020, 722677
Available from: 2019-09-11 Created: 2019-09-11 Last updated: 2019-09-20Bibliographically approved
Frank, K., Spry, P., Raat, H., Allen, R., Jansson, N. & Ripa, M. (2019). Variability in the Geological, Mineralogical, and Geochemical Characteristics of Base Metal Sulfide Deposits in the Stollberg Ore Field, Bergslagen District, Sweden. Economic geology and the bulletin of the Society of Economic Geologists, 114(3), 473-512
Open this publication in new window or tab >>Variability in the Geological, Mineralogical, and Geochemical Characteristics of Base Metal Sulfide Deposits in the Stollberg Ore Field, Bergslagen District, Sweden
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2019 (English)In: Economic geology and the bulletin of the Society of Economic Geologists, ISSN 0361-0128, E-ISSN 1554-0774, Vol. 114, no 3, p. 473-512Article in journal (Refereed) Published
Abstract [en]

The Stollberg ore field occurs in the Bergslagen region of south-central Sweden, a polydeformed ca. 1.9 Ga igneous province dominated by bimodal felsic and mafic rocks. Sulfide mineralization is hosted by metavolcanic rocks, marble, and skarn and consists of massive to semimassive polymetallic sulfides and iron oxide in a semiregional F2 syncline termed the Stollberg syncline. The dominant country rocks are rhyolitic pumice breccia and rhyolitic ash-siltstone with minor mafic sills metamorphosed to the amphibolite facies. On the eastern limb of the Stollberg syncline, sulfide mineralization occurs as stratabound premetamorphic replacement of volcaniclastic rocks and limestone that grades into iron formation. The development of skarn assemblages is the result of low-temperature replacement of limestone and volcaniclastic rocks rather than formation by high-temperature metasomatism or synmetamorphic or late hydrothermal replacement of marble. Metamorphosed, hydrothermally altered rocks on the eastern limb are dominated by the assemblages garnet-biotite and gedrite-albite. Silica-altered rocks are generally subordinate in the Stollberg ore field; however, sulfides at Gränsgruvan, on the western limb of the syncline, are located in a silicified zone along with metamorphosed, altered rocks dominated by sericite and the assemblage quartz-garnet-pyroxene. Although the Tvistbo and Norrgruvan prospects along the northern end of the syncline are small, they show geologic characteristics that are transitional to deposits found on the western and eastern limbs of the syncline. Ore at Tvistbo is hosted by skarn and is spatially associated with quartz-garnet-pyroxene rocks, whereas sulfides at Norrgruvan are hosted by quartz-fluorite rocks that are similar to those hosting the Brusgruvan deposit on the eastern limb of the syncline.

Whole-rock analyses of variably altered host rocks in the Stollberg ore field suggest that most components were sourced from felsic volcaniclastic rocks and that Zr, Ti, Al, Hf, Nb, Sc, Th, Ga, U, and rare-earth elements (REEs) were immobile during alteration. These rocks are enriched in light REEs, depleted in heavy REEs, and have negative Eu anomalies, whereas sulfide-bearing rocks (Fe- and base metal-rich) and altered rocks in the ore zone show the same REE pattern but with positive Eu anomalies. Indicators of proximity to sulfides in altered rocks in the Stollberg ore field include positive Eu anomalies, an increase in the concentration of Pb, Sb, As, Tl, Ba, Ba/Sr, and K2O, as well as an increase in a modified version of the Ishikawa alteration index, which accounts for the presence of primary Ca in an original limestone component. Garnet and pyroxene enriched in either Ca or Mn are also considered to be pathfinders to ore. Cooling of an acidic, reduced hydrothermal fluid that carried sulfur and metals, which became neutralized as it reacted with limestone, is likely responsible for the formation of sulfides in the Stollberg ore field. The nature of the host rock types, the style of the alteration spatially associated with sulfide mineralization, and the spatial association with iron formation bear some resemblance to volcanogenic massive sulfide and Broken Hill-type deposits. However, the stratabound replacement of limestone by sulfides distinguishes it from these deposit types and is a so-called SVALS-type ore system, which is a class of stratabound, volcanic-hosted, limestone-skarn deposits restricted to the Bergslagen district.

Place, publisher, year, edition, pages
Littleton, Colorado: Society of Economic Geologists, 2019
Keywords
ZN-PB-AG, HYDROTHERMAL ALTERATION, IMMOBILE ELEMENTS, OXIDE DEPOSITS, ROCKS, METAMORPHISM, AUSTRALIA, PROVINCE, FACIES, REDISTRIBUTION
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-73450 (URN)10.5382/econgeo.4646 (DOI)000467386300004 ()2-s2.0-85071856037 (Scopus ID)
Note

Validerad;2019;Nivå 2;2019-06-11 (oliekm)

Available from: 2019-04-05 Created: 2019-04-05 Last updated: 2019-09-19Bibliographically approved
Jansson, N. (2018). EXplORE: Master programme in Exploration. In: : . Paper presented at EIT RawMaterials Exploration workshop 2018, Copenhagen, Denmark, 21-22 November.
Open this publication in new window or tab >>EXplORE: Master programme in Exploration
2018 (English)Conference paper, Oral presentation only (Other academic)
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-72376 (URN)
Conference
EIT RawMaterials Exploration workshop 2018, Copenhagen, Denmark, 21-22 November
Projects
EXplORE
Available from: 2018-12-27 Created: 2018-12-27 Last updated: 2019-05-13
Jansson, N. (2018). Genetic models for the Bergslagen sulfide deposits: The importance of continuously improving ore genetic models for exploration in mature mining districts. In: : . Paper presented at EIT RawMaterials Exploration workshop 2018, Copenhagen, Denmark, 21-22 November 2018.
Open this publication in new window or tab >>Genetic models for the Bergslagen sulfide deposits: The importance of continuously improving ore genetic models for exploration in mature mining districts
2018 (English)Conference paper, Oral presentation only (Other academic)
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-72375 (URN)
Conference
EIT RawMaterials Exploration workshop 2018, Copenhagen, Denmark, 21-22 November 2018
Funder
Vinnova
Available from: 2018-12-27 Created: 2018-12-27 Last updated: 2019-09-26
Jansson, N., Zetterqvist, A., Allen, R. & Malmström, L. (2018). Geochemical vectors for stratiform Zn-Pb-Ag sulfide and associated dolomite-hosted Cu mineralization at Zinkgruvan, Bergslagen, Sweden. Journal of Geochemical Exploration, 190, 207-228
Open this publication in new window or tab >>Geochemical vectors for stratiform Zn-Pb-Ag sulfide and associated dolomite-hosted Cu mineralization at Zinkgruvan, Bergslagen, Sweden
2018 (English)In: Journal of Geochemical Exploration, ISSN 0375-6742, E-ISSN 1879-1689, Vol. 190, p. 207-228Article in journal (Refereed) Published
Abstract [en]

The Zinkgruvan deposit is the largest stratiform Zn-Pb-Ag mineralization in Sweden. The most recent genetic model attributes ore formation to the discharge of oxidized, near-neutral pH, metalliferous brines into a reduced basin, forming laterally extensive, stratiform sulfide mineralization on the seafloor. It has a known strike extent of 5 km and is underlain by a regionally extensive zone of K-altered metavolcanic rock and dolomitic marble, the latter hosting Cu-(Co-Ni) replacement mineralization near the inferred hydrothermal vent to the stratiform sulfides. The deposit is stratigraphically overlain by migmatized,  pyrrhotite- and graphite-rich pelite that is in turn overlain by a banded almandine-biotite-quartz-ferrosilite-bearing unit at the base of an regionally extensive metasedimentary succession. These laterally continuous units are interpreted as metamorphosed organic-rich sulphidic mudstone and silicate-dominated Fe formation, respectively.

The favorable stratigraphic interval contains anomalously high Zn, Pb, Ag, Cu, K2O/(K2O+Na2O), Mn, Co, Tl, Ba and B relative to adjacent metatuffite. However, only Zn, Pb, Ag, K2O/(K2O+Na2O) and Mn are significantly enriched relative to adjacent strata beyond the known lateral extent of the ore. Elevated copper, Co and Tl only occur in the vent-proximal part of the deposit, whereas anomalous enrichments of Ba and B are sporadic and occur mainly in the stratigraphic footwall. Many elements such as Si, Fe, Mg, Ca and Cs are of limited use in vectoring due to low enrichment factors relative to inferred background compositions and/or strong lithological controls on their distribution.

Although ore metal (Zn, Pb and Ag) enrichments are the best quantitative and qualitative guides to ore, K, Mn and Co enrichments also provide corroborative support. The most useful elements for vectoring have been synthesized into exploration indices. The Modified Sedex Metal Index (MSMI; Zn+3Pb+100Ag) is a vector towards stratiform Zn-Pb-Ag mineralization, whereas MSMI2 [Zn+3Pb+10(Cu+Co)] alsoallows targeting of proximal Cu mineralization.

The banded iron formation and the pyrrhotite- and graphite-rich pelite of the stratigraphic hangingwall are consistently enriched in base metals (e.g. 500-1000 ppm Zn), total S and Mn throughout the entire Zinkgruvan area. However, these units are not known to grade laterally along strata into economic base metal sulfide mineralization, and they are not obviously products of the same hydrothermal system which formed the stratiform Zn-Pb-Ag deposit.

In a vent-distal setting, the somewhat spurious metal anomalies of the hangingwall units can be difficult to distinguish from those of the favorable interval. The favorable stratigraphic interval can, however, be recognized by also taking into account that positive Zn anomalies are mainly coincident with positive anomalies in both K and Mn only in the favorable interval. Furthermore, samples from the favorable interval generally have Co/Ni > 1 and displays a positive Co/Ni vs. Zn trend, whereas samples of the pyrrhotite- and graphite-rich pelite have Co/Ni < 1 and define a negative Co/Ni vs. Zn trend. Thus, the index (Co/Ni)*Zn allows easy detection of weak Zn anomalies associated with the stratiform Zn-Pb-Ag mineralization.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Geochemical vectoring, exploration index, SEDEX, VMS, Broken Hill-type, Bergslagen
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-67980 (URN)10.1016/j.gexplo.2018.03.015 (DOI)000432601600015 ()2-s2.0-85044466046 (Scopus ID)
Projects
Conceptual Modeling and Exploration Criteria for Stratiform Zn-Pb-Ag-(Cu) Deposits in Bergslagen, Sweden
Funder
Vinnova, 2014-01792
Note

Validerad;2018;Nivå 2;2018-04-03 (rokbeg)

Available from: 2018-03-18 Created: 2018-03-18 Last updated: 2019-09-13Bibliographically approved
Kampmann, T. C., Jansson, N. F., Stephens, M. B., Olin, P. H., Gilbert, S. & Wanhainen, C. (2018). Syn-tectonic sulphide remobilization and trace element redistribution at the Falun pyritic Zn-Pb-Cu-(Au-Ag) sulphide deposit, Bergslagen, Sweden. Ore Geology Reviews, 96, 48-71
Open this publication in new window or tab >>Syn-tectonic sulphide remobilization and trace element redistribution at the Falun pyritic Zn-Pb-Cu-(Au-Ag) sulphide deposit, Bergslagen, Sweden
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2018 (English)In: Ore Geology Reviews, ISSN 0169-1368, E-ISSN 1872-7360, Vol. 96, p. 48-71Article in journal (Refereed) Published
Abstract [en]

Mineralization types at the Palaeoproterozoic Falun base metal sulphide deposit are predominantly pyritic Zn-Pb-Cu-rich massive sulphide mineralization, disseminated to semi-massive Cu-Au mineralization, auriferous quartz veins, and mineralized shear zones of talc-chlorite-dominated schist. The massive and disseminated to semi-massive sulphide mineralization types were subject to polyphase ductile deformation (D1 and D2) and metamorphism under low-P, lower-amphibolite facies conditions, which led to the development of ore textures and paragenetic relationships indicating both mechanical and chemical remobilization of sulphides. In the massive sulphide mineralization, rare inclusion-rich pyrite occurs as relic cores inside inclusion-poor metamorphosed pyrite. Imaging and spot analysis using multielement laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) reveal that inclusion-poor pyrite was depleted in trace elements, which were originally present as non-stoichiometric lattice substitutions or in mineral inclusions. The inclusion-rich pyrite was shielded from depletion and, at least partly, retained its initially higher trace element concentrations, including Au.

Gold is also associated with chalcopyrite in the disseminated to semi-massive Cu-Au mineralization and in the system of auriferous quartz veins hosted therein, the latter being also affected by the D2 ductile strain. It is inferred that emplacement of the vein system took place after the peak of metamorphism, which occurred between D1 and D2, but prior to and possibly even shortly after completion of the D2 deformational event. Similarities in trace element signatures in chalcopyrite are compatible with the interpretation that the quartz veins formed by local chemical remobilization of components from the Cu-Au mineralization. Transport of liberated Au from pyrite during grain growth in the massive sulphide mineralization may have upgraded the Au endowment in the quartz veins, leading to the additional formation of native gold in the veins. A strong correspondence between elements liberated from pyrite (e.g. Pb, Bi, Se and Au) and those forming discrete and characteristic mineral phases in the quartz veins (Pb-Bi sulphosalts, native gold) supports this hypothesis.

Trace element signatures for the main sulphide minerals pyrite, chalcopyrite, sphalerite and galena are similar to previously published data from other metamorphosed massive sulphide deposits. The association of the Falun mineralization with elevated Bi is reflected by its occurrence in sulphide minerals (e.g. galena) and in abundant mineral inclusions of Pb-Bi sulphosalts (e.g. weibullite), especially in the disseminated to semi-massive Cu-Au mineralization. Elevated Sn concentrations in the lattice and/or as cassiterite inclusions in chalcopyrite, sphalerite and galena are compatible with a hot, acidic and reducing fluid during formation of the syn-volcanic, base metal sulphide mineralization and associated host-rock alteration.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Falun deposit, Bergslagen, Fennoscandian Shield, sulphide remobilization, LA-ICP-MS, trace elements
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-61672 (URN)10.1016/j.oregeorev.2018.04.010 (DOI)000434004700004 ()2-s2.0-85045259948 (Scopus ID)
Projects
Structural evolution, hydrothermal alteration and tectonic setting of the Falun base metal and gold deposit, Bergslagen region, Sweden
Funder
The Geological Survey of Sweden (SGU), 61-1441/2011
Note

Validerad;2018;Nivå 2;2018-04-16 (andbra)

Available from: 2017-01-27 Created: 2017-01-27 Last updated: 2018-06-28Bibliographically approved
Jansson, N., Sädbom, S., Allen, R., Billström, K. & Spry, P. G. (2018). The Lovisa stratiform Zn-Pb deposit, Bergslagen, Sweden: Structure, stratigraphy, and ore genesis. Economic geology and the bulletin of the Society of Economic Geologists, 113(3), 699-739
Open this publication in new window or tab >>The Lovisa stratiform Zn-Pb deposit, Bergslagen, Sweden: Structure, stratigraphy, and ore genesis
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2018 (English)In: Economic geology and the bulletin of the Society of Economic Geologists, ISSN 0361-0128, E-ISSN 1554-0774, Vol. 113, no 3, p. 699-739Article in journal (Refereed) Published
Abstract [en]

Medium- to high-grade metamorphosed, 1.9 Ga, stratiform, syngenetic Zn-Pb±Ag sulfide deposits comprise an economically important type of ore deposit in the Bergslagen lithotectonic unit of the Fennoscandian shield. The Lovisa Zn-Pb deposit occurs in a metamorphosed succession of rhyolitic ash-siltstone, rhyolitic mass flow deposits, limestone and iron formation, deposited at a stage of waning volcanism in Bergslagen.

Accessory graphite, absence of Ce anomalies in shale-normalized rare-earth element (REE) data, and absence of hematite in Mn-rich iron formations stratigraphically below the Lovisa Zn-Pb deposit indicate a suboxic-anoxic depositional environment. The uppermost Mn-rich iron formation contains disseminated, inferred syngenetic Pb-Ag mineralization with mainly negative δ34S values in sphalerite and galena (-6.1 to -1.9‰).

Deposition of this iron formation terminated during a pulse of explosive felsic volcanism. The Lovisa Zn-Pb deposit is interpreted to have formed in an alkali-rich brine pool developed immediately after this volcanic event, based on lithogeochemical and stratigraphic evidence. The first stage of mineralization deposited stratiform sphalerite mineralization with mainly positive δ34S values (-0.9 to +4.7‰). This was succeeded by deposition of more sphalerite-galena stratiform mineralization with δ34S values close to 0‰ (-2.1 to +1.5‰). The more galena-rich mineralization partitioned strain and was partly remobilized during later ductile deformation.

The stratigraphic context, sulfide mineralogy, sulfur isotopes and alteration geochemistry suggest that the metalliferous fluids and the depositional environment were H2S-deficient (S-poor or SO42--dominant). The source of sulfur is interpreted to have been a mixture of H2S derived from bacterial and thermochemical seawater sulfate reduction, and sulfur derived from leaching of volcanic rocks, with the latter becoming more important over time.

Lovisa formed in a setting where basin subsidence was periodically punctuated by the deposition of thick, syn-eruptive felsic volcaniclastic massflow deposits. Coeval volcanism was likely important for driving hydrothermal activity and supplying a reservoir of metals and sulfur. However, the high rate of deposition of volcaniclastic sediment in Bergslagen also precluded the establishment of long-lived, deep and anoxic environments favorable for accumulation of organic matter and H2S. This stratigraphic pattern is common in Bergslagen and may explain why large stratiform Zn-Pb deposits are uncommon in the region and restricted to the uppermost part of the metavolcanic succession, directly stratigraphically beneath post-volcanic pelitic rocks.

Place, publisher, year, edition, pages
Society of Economic Geologists, 2018
Keywords
Bergslagen, iron oxide, sulfide, VMS, SEDEX
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-67129 (URN)10.5382/econgeo.2018.4567 (DOI)000432889300006 ()2-s2.0-85046039155 (Scopus ID)
Projects
Conceptual modelling and exploration criteria for stratiform Zn-Pb-Ag-(Cu) Deposits in Bergslagen, Sweden
Funder
VINNOVA, 2014-01792
Note

Validerad;2018;Nivå 2;2018-05-04 (andbra)

Available from: 2017-12-28 Created: 2017-12-28 Last updated: 2018-06-08Bibliographically approved
Jansson, N. (2018). The relationship between polymetallic sulfide deposits and Fe oxide deposits in the Garpenberg area. In: : . Paper presented at Bergslagen – frontiers for ore genetic modelling and exploration in a historic mining district. Oct 16 2018, Stockholm University, Sweden.
Open this publication in new window or tab >>The relationship between polymetallic sulfide deposits and Fe oxide deposits in the Garpenberg area
2018 (English)Conference paper, Oral presentation only (Other academic)
National Category
Geology
Research subject
Ore Geology
Identifiers
urn:nbn:se:ltu:diva-72003 (URN)
Conference
Bergslagen – frontiers for ore genetic modelling and exploration in a historic mining district. Oct 16 2018, Stockholm University, Sweden
Funder
The Geological Survey of Sweden (SGU)
Available from: 2018-12-27 Created: 2018-12-27 Last updated: 2019-05-13
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-2634-6953

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