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Rääpysjärvi Graphite exploration area, Tuusniemi, Northern Savonia, Finlandi
Regional Level Types
Rääpysjärvi Graphite exploration areaExploration Area
TuusniemiMunicipality
Northern SavoniaRegion
FinlandCountry

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Latitude & Longitude (WGS84): 62° 36' 45'' North , 28° 28' 10'' East
Latitude & Longitude (decimal): 62.61257,28.46964
GeoHash:G#: uehhpy6bw
Owned/operated by:Beowulf Mining plc
Locality type:Exploration Area
Köppen climate type:Dfc : Subarctic climate


Geologically, the area is situated within the eastern Savo province of the North Karelia Schist Belt (NKSB). Petrologically, the rocks are classified as North Karelian supracrustal rocks. The lithology comprises mostly of Paleoproterozoiz sedimentogen mica schists, named historically as Savo schists, deposited into a rift basin adjacent to the Karelian craton.

Historically, the area contained a known, graphite quarry and drilling had been carried out in the vicinity of lake Rääpysjärvi.

More recently, several exploration programmes have been carried out in the area. In 2015, bedrock mapping tested the area, however several anomalous areas were still left unexplored. In 2017, further mapping was carried out to follow up the strong aero-electromagnetic anomalies and the GTK black shale interpretations over the area, and to locate the historic graphite quarry. The quarry was eventually located at a low small outcrop ridge and is currently a 10x4m water filled pit 2-3m deep.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


1 valid mineral.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Graphite
Formula: C
Reference: https://beowulfmining.com/projects/finland/raapysjarvi/
'commodity:Graphite'
Reference:  
'Mica schist'
Reference: https://beowulfmining.com/projects/finland/raapysjarvi/

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Graphite'1.CB.05aC
Unclassified Minerals, Rocks, etc.
'Mica schist'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Unclassified Minerals, Rocks, etc.
'Mica schist'-

List of minerals for each chemical element

CCarbon
C GraphiteC

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleoproterozoic
1600 - 2500 Ma



ID: 658571
Sedimentary; Slope and deep water

Age: Proterozoic (1600 - 2500 Ma)

Description: Northern Europe, Svecofennian and Lapland-Kola orogens

Comments: Orogen, fold-thrust belt, folded region; Koistinen et al., 2001; Sigmond, 2002; Solli, unpublished compilation, 2007-08; Bergman et al., unpublished revisions, 2007-08

Lithology: Greywacke, phyllite, mica schist, meta-arkose, graphitic schist, paragneiss, conglomerate, amphibolite

Reference: J.C. Harrison, M.R. St-Onge, O.V. Petrov, S.I. Strelnikov, B.G. Lopatin, F.H. Wilson, S. Tella, D. Paul, T. Lynds, S.P. Shokalsky, C.K. Hults, S. Bergman, H.F. Jepsen, and A. Solli. Geological map of the Arctic. doi:10.4095/287868. Geological Survey of Canada Map 2159A. [2]

Paleoproterozoic
1600 - 2500 Ma



ID: 3148485
Proterozoic I meta-sandstone

Age: Proterozoic (1600 - 2500 Ma)

Description: undifferentiated metamorphic

Lithology: Major:{meta-sandstone}, Minor{mica schist,gneiss,amphibolite}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Paleoproterozoic
1600 - 2500 Ma



ID: 3185055
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Mica schist; metasedimentary schist

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

External Links



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