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Lomstjønn Exploration Shaft, Åvesland, Evje og Hornnes, Aust-Agder, Norwayi
Regional Level Types
Lomstjønn Exploration ShaftShaft
ÅveslandFarm
Evje og HornnesMunicipality
Aust-AgderCounty
NorwayCountry

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Key
Lock Map
Name in Norwegian:Lomstjønn synk, Åvesland, Evje og Hornnes, Aust-Agder, Norge
Latitude & Longitude (WGS84): 58° 35' 41'' North , 7° 55' 4'' East
Latitude & Longitude (decimal): 58.59489,7.91784
GeoHash:G#: u4mtk4veg
Locality type:Shaft
Köppen climate type:Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Byglandsfjord332 (2014)10.0km
Birkeland2,254 (2010)34.6km
Vennesla10,931 (2014)36.4km
Tveit1,397 (2010)41.9km
Justvik1,630 (2014)44.7km


A report from the Direktoratet av Mineralforvaltning (Nixon 1969) describes a minor exploration shaft. The name was written as "Lomtjern", but that is not the way it is spelled on modern maps.

A core drill resulted in 1,5 m of pure ore at a depth of 12 m.

The locality is supposed to be about 1,4 km SSE of a sand pit and rock quarry along the road to Gautestad.

This figure is inaccurate. The Lomstjønn lake is only 840 m SSSE of the place where one is supposed to go into the woods. The locality is then expected to be at a spot about 875 m SSE of the road.

But further map study suggests that the author has made a mistake with the names of the lake.

He has made a map that doesn't correspond with the actual situation.

At the 2018 map the Lomstjønn is all but dried up and has a shape not corresponding with the drawings.

What he calls Langtjern corresponds better with the Lomstjønn with an unnamed little lake to the west.

And then the altitude map clearly shows a feature that is the result of mining activity.

Coordinates © Kartverket - https://www.kartverket.no

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
ScandinaviaRegion

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


9 valid minerals.

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:

'Albite-Anorthite Series'
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Chalcopyrite
Formula: CuFeS2
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
'Clinopyroxene Subgroup'
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Goethite
Formula: α-Fe3+O(OH)
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Ilmenite
Formula: Fe2+TiO3
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Marcasite
Formula: FeS2
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
'Orthopyroxene Subgroup'
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Pyrite
Formula: FeS2
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Pyrrhotite
Formula: Fe7S8
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.
Violarite
Formula: Fe2+Ni3+2S4
Reference: Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Marcasite2.EB.10aFeS2
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Violarite2.DA.05Fe2+Ni3+2S4
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Clinopyroxene Subgroup'-
'Orthopyroxene Subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 3:4
Violarite2.10.1.8Fe2+Ni3+2S4
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Clinopyroxene Subgroup'-
'Orthopyroxene Subgroup'-

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H Goethiteα-Fe3+O(OH)
OOxygen
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O MagnetiteFe2+Fe23+O4
O Goethiteα-Fe3+O(OH)
O IlmeniteFe2+TiO3
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
AlAluminium
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SiSilicon
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SSulfur
S PyrrhotiteFe7S8
S ChalcopyriteCuFeS2
S PyriteFeS2
S MarcasiteFeS2
S ViolariteFe2+Ni23+S4
S Pentlandite(FexNiy)Σ9S8
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
TiTitanium
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti IlmeniteFe2+TiO3
FeIron
Fe PyrrhotiteFe7S8
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe MarcasiteFeS2
Fe ViolariteFe2+Ni23+S4
Fe Pentlandite(FexNiy)Σ9S8
Fe MagnetiteFe2+Fe23+O4
Fe Goethiteα-Fe3+O(OH)
Fe IlmeniteFe2+TiO3
NiNickel
Ni ViolariteFe2+Ni23+S4
Ni Pentlandite(FexNiy)Σ9S8
CuCopper
Cu ChalcopyriteCuFeS2

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

Proterozoic
541 - 2500 Ma



ID: 3186372
Proterozoic crystalline metamorphic rocks

Age: Proterozoic (541 - 2500 Ma)

Lithology: Granitoid gneiss; orthogneiss/paragneiss

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]

Mesoproterozoic - Paleoproterozoic
1000 - 2500 Ma



ID: 3133829
Proterozoic I gabbro

Age: Proterozoic (1000 - 2500 Ma)

Description: undifferentiated metamorphic

Lithology: Major:{gabbro}, Minor{diorite,plutonic ultramafic group,meta-gabbro}

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

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Nixon, F. (1969) A/S Sulfidmalm Evje Iveland Project - Catalogue of Sulphide prospects. Bergvesenet rapport BV 994, 54p.

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