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Grasåsen graphite Mine, Vegårshei, Aust-Agder, Norway

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Name(s) in local language(s):Grassåsen grafiittgruve, Vegårshei kommune (Vegårdshei), Aust-Agder fylke, Norge
Latitude & Longitude (WGS84): 58° 44' 41'' North , 8° 56' 51'' East
Latitude & Longitude (decimal): 58.74478,8.94771
GeoHash:G#: u4qq5w5t0
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


Old graphite mine.

There is very little information about this mine on the internet.

It seems as if the original spelling "Grassåsen" is incorrect. At the given coordinates there is a "Grasåsen" farm.

However, exactly where the mine is, is impossible to say from a map study.

The situation is unfortunately more complex. In addition to a farm called Grasåsen, there are 6 more hills in the municipality by that name.

Coordinates:

58.78163757310549,8.762304782867433
58.73046587330873,8.735777735710146
58.766222485114696,8.905320167541506
58.744446722256725,8.946561813354494
58.702347978059095,8.874174356460573
58.67447510838353,8.828925490379335


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

Regions containing this locality

Scandinavia

Region - 2,024 mineral species & varietal names listed

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


2 valid minerals.

Detailed Mineral List:

Graphite
Formula: C
Reference: Torben Kjeldgård specimen & photo
'commodity:Graphite'
Reference: From USGS MRDS database
Tremolite ?
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Torben Kjeldgård specimen & photo

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Graphite'1.CB.05aC
Group 9 - Silicates
'Tremolite' ?9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite ?66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2

List of minerals for each chemical element

HHydrogen
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C GraphiteC
OOxygen
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
MgMagnesium
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
SiSilicon
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CaCalcium
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2

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
1000 - 1600 Ma



ID: 3158480
Proterozoic II granite

Age: Mesoproterozoic (1000 - 1600 Ma)

Lithology: Major:{granite}, Minor{monzonite,meta-granite,meta-monzonite}

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


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