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Riukka prospect, Somero, Southwestern Finland Region, Finland

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Name(s) in local language(s):Riukka, Somero, Lounais-Suomen alue (Sydvästra Finlands region), Suomi
Latitude & Longitude (WGS84): 60° 43' 5'' North , 23° 26' 58'' East
Latitude & Longitude (decimal): 60.71813,23.44969
GeoHash:G#: udb9mt7sc
Locality type:Prospect
Köppen climate type:Dfb : Warm-summer humid continental climate


Gold bearing quartz veins in sericite schist.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


16 valid minerals.

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Bismuth
Formula: Bi
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Chalcopyrite
Formula: CuFeS2
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Galena
Formula: PbS
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Gold
Formula: Au
Reference: K. Saalmann (2007): Structural control on gold mineralization in the Satulinmäki and Riukka prospects, Häme Schist Belt, southern Finland. Bulletin of the Geological Society of Finland 79, 69–93. [http://www.geologinenseura.fi/bulletin/Volume79/Saalmann_2007.pdf]
Hedleyite
Formula: Bi7Te3
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Hessite
Formula: Ag2Te
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Ilmenite
Formula: Fe2+TiO3
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Joséite-B
Formula: Bi4Te2S
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Löllingite
Formula: FeAs2
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Pyrite
Formula: FeS2
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Pyrrhotite
Formula: Fe7S8
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Rutile
Formula: TiO2
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Scheelite
Formula: Ca(WO4)
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
Sphalerite
Formula: ZnS
Reference: Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla. Geological Survey of Finland, Report M06/2024/2007/10/69.
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Talikka, M. and Vuori, S. (2010): Geochemical and boron isotopic compositions of tourmalines from selected gold-mineralised and barren rocks in SW Finland. Bulletin of the Geological Society of Finland, 82, 113-128.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Bismuth'1.CA.05Bi
'Gold'1.AA.05Au
Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
'Chalcopyrite'2.CB.10aCuFeS2
'Galena'2.CD.10PbS
'Hedleyite'2.DC.05Bi7Te3
'Hessite'2.BA.60Ag2Te
'Joséite-B'2.DC.05Bi4Te2S
'Löllingite'2.EB.15aFeAs2
'Pyrite'2.EB.05aFeS2
'Pyrrhotite'2.CC.10Fe7S8
'Sphalerite'2.CB.05aZnS
Group 4 - Oxides and Hydroxides
'Ilmenite'4.CB.05Fe2+TiO3
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Rutile'4.DB.05TiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Scheelite'7.GA.05Ca(WO4)
Unclassified Minerals, Rocks, etc.
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Hessite2.4.2.1Ag2Te
AmBnXp, with (m+n):p = 4:3
Hedleyite2.6.3.3Bi7Te3
Joséite-B2.6.2.2Bi4Te2S
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Löllingite2.12.2.9FeAs2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Unclassified Minerals, Rocks, etc.
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O RutileTiO2
O ScheeliteCa(WO4)
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
SSulfur
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S GalenaPbS
S Joséite-BBi4Te2S
S PyriteFeS2
S PyrrhotiteFe7S8
S SphaleriteZnS
CaCalcium
Ca ScheeliteCa(WO4)
TiTitanium
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe IlmeniteFe2+TiO3
Fe LöllingiteFeAs2
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As LöllingiteFeAs2
AgSilver
Ag HessiteAg2Te
TeTellurium
Te HedleyiteBi7Te3
Te HessiteAg2Te
Te Joséite-BBi4Te2S
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
PbLead
Pb GalenaPbS
BiBismuth
Bi BismuthBi
Bi HedleyiteBi7Te3
Bi Joséite-BBi4Te2S

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: 657317
Igneous: extrusive; Extrusive: mafic

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: Mafic volcanic rocks

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]

Statherian
1600 - 1800 Ma



ID: 3185627
Paleoproterozoic intrusive rocks

Age: Statherian (1600 - 1800 Ma)

Comments: Rapakivi Granite

Lithology: Intrusive igneous rocks

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 3130412
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]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
K. Saalmann (2007): Structural control on gold mineralization in the Satulinmäki and Riukka prospects, Häme Schist Belt, southern Finland. Bulletin of the Geological Society of Finland 79, 69–93. [http://www.geologinenseura.fi/bulletin/Volume79/Saalmann_2007.pdf]
Kärkkäinen, N., Koistinen, E. & Jokinen, T. 2007. Tutkimustyöselostus malmitutkimuksista
Tammelan kunnan Riukan, kaivosrek.nro 7483/1, ja Pursion, kaivosrek.nro 7482/1, valtauksilla.
Geological Survey of Finland, Report M06/2024/2007/10/69.
Talikka, M. and Vuori, S. (2010): Geochemical and boron isotopic compositions of tourmalines from selected gold-mineralised and barren rocks in SW Finland. Bulletin of the Geological Society of Finland, 82, 113-128.


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