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![(a) Geological map of the Sakatti deposit displaying major lithological units and the location of the deposit within the CLGB. The lithological map is based on information from structural data obtained by Luukas (2017) and the internal Sakatti 3D model. The mineralized peridotite unit sits between tuffites (Savukoski Group) and quartzites (Sodankylä Group). Besides the main deposit, the NE and SW deposits are indicated. (b) Cross section from A'–B' cutting through the Sakatti deposit (main body). Modified after Figure 19a, b; Fröhlich & Siikaluoma (2020).]()
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![Cu versus Rh plot of vein sulfide samples and massive and disseminated sulfide ore samples of the Sakatti deposit.]()
![Schematic model for the genesis of Cu-rich sulfide veins at the Sakatti deposit. Note that silicates, carbonates, and detailed information about the origin of magnetite were excluded for simplification reasons. Not all accessory minerals are displayed.]()
![Selected results of the base-of-till (BOT) geochemical survey undertaken over the Sakatti deposit (Finland) prior to its discovery (results are overlain on a reduced-to-pole airborne magnetic grid). BOT samples were collected from the basal till layer immediately overlying the bedrock contact. Initial sampling was done at 300 m line spacing along lines perpendicular to the strike of the magnetic body (during 2005 and 2006), followed by additional sampling, first to a line spacing of 150 m (in 2007) and finally to 50 m (in 2008). As a result of this survey, the 150 m × 150 m large subcropping part of the mineralized body was delineated below the till cover, leading to the discovery of the Sakatti Ni–Cu–PGE sulfide deposit. Used with permission of Elsevier from Brownscombe et al. (2015).]()
![S/Se versus (Pt+Pd)100% S diagram of massive and disseminated sulfide ore samples as well as the vein sulfide data from the Sakatti deposit in comparison with data from McCreedy East in Sudbury and Oktyabr'sk in Noril'sk-Talnakh. The diagram displays pre-defined classification fields according to Queffurus & Barnes (2015) of the processes affecting magmatic sulfide deposits. Data for comparison examples retrieved from Ahvenjärvi (2015), Dare et al. (2011), and Czamanske et al. (1992).]()
![Rh versus (Rh/Cu) × 107 ratio plot of massive and disseminated sulfide ore samples (Ahvenjärvi 2015) and Cu-rich vein sulfide samples from the Sakatti deposit. Compositional trends of the fractionation of cumulus mss (dashed black line), accompanying liquid (solid black line), liquid iss fractionation (dotted black line), and mixing lines were retrieved from Naldrett et al. (1999). Note the increasing Rh content with progressing liquid iss fractionation. Rhodium is assumed to be completely incompatible with iss in the diagram (Fig. 2; Fröhlich et al. 2017).]()
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![(A) Schematic model for the formation and position of sulfide ores in large layered intrusions. Note that the sulfide melt sinks and settles near the bottom of the cooling magma chamber. (B) Schematic model of dynamic magma conduit systems, including lava channels. Specific deposits illustrated are given by abbreviations Hi = Hitura, Ke = Kevitsa, Kot = Kotalahti, P = Pechenga, Sa = Sakatti. Modified after Maier and Groves (2011).]()
![Simplified regional geologic map showing lithostratigraphic units of the Central Lapland greenstone belt in 1:200,000 and major rock types in surrounding areas and major structures in the region in 1:5,000,000 (Geological Survey of Finland, 2023). The supracrustal lithostratigraphic units and suites of mafic-ultramafic magmatism are compiled to a lithostratigraphic pile after Hanski and Huhma (2005) and Köykkä et al. (2019). Locations of the Sakatti and Kaarrekumpu Ni-Cu-platinum group element (PGE) deposits are indicated by red stars. Abbreviations: BIFs = banded iron formations, CLGB = Central Lapland greenstone belt, TTG = tonalite-trondhjemite-granodiorite.]()
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![Comparison of average pattern from all 20 vein sulfide samples (red) with the average pattern of (1) the massive and disseminated sulfides of Sakatti (dashed line), (2) the “Copper” and “Deep Copper” zone of the Strathcona deposit in Sudbury containing vein sulfides (dashed and dotted line), (3) the vein sulfides of the Oktyabr'sk deposit in Noril'sk-Talnakh (dotted line), as well as (4) the Cu-rich footwall dominated by vein sulfides at the McCreedy East deposit in Sudbury (black solid line). Note the best-fitting pattern of the vein sulfides from Oktyabr'sk and McCreedy East, expressing a slightly higher IPGE depletion, but overall higher PPGE enrichment. Data were converted to 100% sulfides and normalized with the primitive mantle values of McDonough & Sun (1995).]()
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1-20 OF 47 RESULTS FOR
Sakatti Deposit
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1
Journal Article
Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland Available to Purchase
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 13 December 2021
The Canadian Mineralogist (2021) 59 (6): 1485–1510.
...Fabian Fröhlich; Janne Siikaluoma; Inga Osbahr; Jens Gutzmer ABSTRACT The Sakatti Ni-Cu-platinum-group element deposit is situated in northern Finland and comprises massive, disseminated, and vein sulfide mineralization. A stockwork is formed by chalcopyrite-rich sulfide veins, which contain...
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Image
(a) Geological map of the Sakatti deposit displaying major lithological uni... Available to Purchase
in Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland
> The Canadian Mineralogist
Published: 13 December 2021
Fig. 1. (a) Geological map of the Sakatti deposit displaying major lithological units and the location of the deposit within the CLGB. The lithological map is based on information from structural data obtained by Luukas (2017) and the internal Sakatti 3D model. The mineralized peridotite unit
Book Chapter
Lapland’s Au and Ni-Cu-PGE Systems in Finland Available to Purchase
Series: Society of Economic Geologists Guidebook Series
Publisher: Society of Economic Geologists
Published: 01 January 2020
EISBN: 978-1-629495-00-2
.... In addition, deposit-scale controls and structural features are considered to understand the ore genesis. Areas covered include the Portimo Layered Complex, Kevitsa intrusion, Pahtavaara gold mine, Sakatti deposit, Risti and Launi gold projects, Mustajärvi orogenic gold occurrence, Suurikuusikko gold deposit...
Series: Society of Economic Geologists Guidebook Series
Publisher: Society of Economic Geologists
Published: 01 January 2020
DOI: 10.5382/GB.63
EISBN: 978-1-629495-00-2
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GEOCHEMICAL ASSAY DATA FOR ALL 20 STUDIED CU-SULFIDE VEIN SAMPLES FROM THE ... Available to Purchase
in Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland
> The Canadian Mineralogist
Published: 13 December 2021
TABLE 3. GEOCHEMICAL ASSAY DATA FOR ALL 20 STUDIED CU-SULFIDE VEIN SAMPLES FROM THE SAKATTI DEPOSIT
Image
Cu versus Rh plot of vein sulfide samples and massive and disseminated su... Available to Purchase
in Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland
> The Canadian Mineralogist
Published: 13 December 2021
Fig. 10. Cu versus Rh plot of vein sulfide samples and massive and disseminated sulfide ore samples of the Sakatti deposit.
Image
Schematic model for the genesis of Cu-rich sulfide veins at the Sakatti dep... Available to Purchase
in Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland
> The Canadian Mineralogist
Published: 13 December 2021
Fig. 12. Schematic model for the genesis of Cu-rich sulfide veins at the Sakatti deposit. Note that silicates, carbonates, and detailed information about the origin of magnetite were excluded for simplification reasons. Not all accessory minerals are displayed.
Image
Selected results of the base-of-till (BOT) geochemical survey undertaken ov... Available to Purchase
Published: 01 August 2015
F igure 3 Selected results of the base-of-till (BOT) geochemical survey undertaken over the Sakatti deposit (Finland) prior to its discovery (results are overlain on a reduced-to-pole airborne magnetic grid). BOT samples were collected from the basal till layer immediately overlying the bedrock
Image
S/Se versus (Pt+Pd)100% S diagram of massive and disseminated sulfide ore... Available to Purchase
in Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland
> The Canadian Mineralogist
Published: 13 December 2021
Fig. 11. S/Se versus (Pt+Pd)100% S diagram of massive and disseminated sulfide ore samples as well as the vein sulfide data from the Sakatti deposit in comparison with data from McCreedy East in Sudbury and Oktyabr'sk in Noril'sk-Talnakh. The diagram displays pre-defined classification fields
Image
Rh versus (Rh/Cu) × 10 7 ratio plot of massive and disseminated sulfide ... Available to Purchase
in Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland
> The Canadian Mineralogist
Published: 13 December 2021
Fig. 9. Rh versus (Rh/Cu) × 10 7 ratio plot of massive and disseminated sulfide ore samples ( Ahvenjärvi 2015 ) and Cu-rich vein sulfide samples from the Sakatti deposit. Compositional trends of the fractionation of cumulus mss (dashed black line), accompanying liquid (solid black line
Journal Article
SHRIMP U-Pb Geochronology of the Sakatti and Kaarrekumpu Cu-Ni-Platinum Group Element Deposits—Constraints on the Timing of Fertile Magmatism in the Central Lapland Greenstone Belt Open Access
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 December 2024
Economic Geology (2024) 119 (8): 1769–1790.
... such as zircon, baddeleyite, apatite, titanite, or rutile. However, these minerals may be present in evolved mineralized phases of mafic-ultramafic systems. We present here new SHRIMP U-Pb geochronology results for host rocks of the Sakatti and Kaarrekumpu Cu-Ni-platinum group element (PGE) deposits...
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Includes: Supplemental Content
Journal Article
Applied Geochemistry in Mineral Exploration and Mining Available to Purchase
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 August 2015
Elements (2015) 11 (4): 241–246.
...F igure 3 Selected results of the base-of-till (BOT) geochemical survey undertaken over the Sakatti deposit (Finland) prior to its discovery (results are overlain on a reduced-to-pole airborne magnetic grid). BOT samples were collected from the basal till layer immediately overlying the bedrock...
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Journal Article
Layered Mafic–Ultramafic Intrusions of Fennoscandia: Europe's Treasure Chest of Magmatic Metal Deposits Available to Purchase
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 December 2017
Elements (2017) 13 (6): 415–420.
... deposits, notably the Kemi chromium deposit and the Pechenga nickel deposits. Other deposits include nickel and copper at Kevitsa, Kotalahti and Sakatti; vanadium at Koillismaa; and platinum-group elements at Portimo and Penikat. These deposits constitute important resources that could shield Europe from...
FIGURES
Image
( A ) Schematic model for the formation and position of sulfide ores in lar... Available to Purchase
in Layered Mafic–Ultramafic Intrusions of Fennoscandia: Europe's Treasure Chest of Magmatic Metal Deposits
> Elements
Published: 01 December 2017
Figure 5 ( A ) Schematic model for the formation and position of sulfide ores in large layered intrusions. Note that the sulfide melt sinks and settles near the bottom of the cooling magma chamber. ( B ) Schematic model of dynamic magma conduit systems, including lava channels. Specific deposits
Image
Simplified regional geologic map showing lithostratigraphic units of the Ce... Open Access
in SHRIMP U-Pb Geochronology of the Sakatti and Kaarrekumpu Cu-Ni-Platinum Group Element Deposits—Constraints on the Timing of Fertile Magmatism in the Central Lapland Greenstone Belt
> Economic Geology
Published: 01 December 2024
units and suites of mafic-ultramafic magmatism are compiled to a lithostratigraphic pile after Hanski and Huhma ( 2005 ) and Köykkä et al. ( 2019 ). Locations of the Sakatti and Kaarrekumpu Ni-Cu-platinum group element (PGE) deposits are indicated by red stars. Abbreviations: BIFs = banded iron
Journal Article
Mineral Deposits of Finland (W.D. Maier, R. Lahtinen, and H. O’Brien, eds.) Available to Purchase
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 September 2017
Economic Geology (2017) 112 (6): 1544–1545.
... in Finland. Maybe it was considered too controversial among Finnish geologists, and no one was ready to challenge key issues about this deposit? Nevertheless, there are sections describing the recent discoveries of the world-class mafic-ultramafic rock-hosted Sakatti Ni-Cu-PGE deposit and the very exciting...
Journal Article
Self-organizing map modelling and prospectivity mapping of surface geochemical data in Au and multi-metal mineral exploration: example from northern Finland Open Access
Publisher: Geological Society of London
Published: 28 February 2025
Geochemistry: Exploration, Environment, Analysis (2025) 25 (1): geochem2024-055.
... Au; Rupert Resources 2022 ) and the Sakatti Ni–Cu–PGE deposit (e.g. Brownscombe et al. 2015 ). The CLB is analogous to other greenstone belts, such as the Superior province in Canada, and Yilgarn in western Australia (e.g. Robert and Poulsen 1997 ; Witt and Vanderhor 1998 ; Goldfarb et al...
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Image
Comparison of average pattern from all 20 vein sulfide samples (red) with t... Available to Purchase
in Genesis of sulfide vein mineralization at the Sakatti Ni-Cu-PGE deposit, Finland
> The Canadian Mineralogist
Published: 13 December 2021
Fig. 8. Comparison of average pattern from all 20 vein sulfide samples (red) with the average pattern of (1) the massive and disseminated sulfides of Sakatti (dashed line), (2) the “Copper” and “Deep Copper” zone of the Strathcona deposit in Sudbury containing vein sulfides (dashed and dotted
Journal Article
Why 3D seismic data are an asset for exploration and mine planning? Velocity tomography of weakness zones in the Kevitsa Ni-Cu-PGE mine, northern Finland Available to Purchase
Journal: Geophysics
Publisher: Society of Exploration Geophysicists
Published: 29 January 2018
Geophysics (2018) 83 (2): B33–B46.
... area has been a target of numerous geologic and geophysical investigations. For example, the Sakatti super-rich Ni-Cu-PGE deposit was recently discovered ( Coppard, 2014 ; Brownscombe et al., 2015 ) just 10 km south-southwest of the Kevitsa mine. It likely sits within the same geologic setting...
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Journal Article
A mining industry overview of cobalt in Finland: exploration, deposits and utilization Open Access
Journal: Geoenergy
Publisher: Geological Society of London
Published: 13 November 2023
Geoenergy (2023) 1 (1): geoenergy2023-016.
... in these komatiites include Hotinvaara, Lomalampi and Sakatti ( Figs 1 , 2 and 4 ; Table 1 ). The Sakatti deposit was discovered during a regional exploration project by Anglo American in 2009 ( Brownscombe et al . 2015 ). Three ultramafic-hosted ore bodies have been identified at Sakatti, named Main...
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