|Name in Norwegian:||Bjortjern feltspatbrudd, Birkenes, Aust-Agder, Norge|
|Latitude & Longitude (WGS84):||58° 32' 25'' North , 8° 22' 4'' East|
|Latitude & Longitude (decimal):||58.54054,8.36790|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
A double quarry where feldspar was mined.
The coordinates given are for the larger quarry. The coordinates of the other are: 58.54059°N 8.36823°Ø.
The NGU mineral database has registered two occurrences in the same area:
Deposit area 928 - 317, Bjortjern: 58.5371570,8.3630790
Deposit area 928 - 318, Bjortjern: 58.5416600,8.3655740
At these coordinates there are no visible signs of quarrying.
Coordinates © Kartverket - https://www.kartverket.no
Regions containing this locality
|Eurasian Plate||Tectonic Plate|
Select Mineral List TypeStandard Detailed Strunz Dana Chemical Elements
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Detailed Mineral List:
| ⓘ 'Feldspar Group'|
Reference: Geological Survey of Norway. The Industrial Mineral Database. Deposit Area 928 - 318. Bjortjern
List of minerals arranged by Strunz 10th Edition classification
|Unclassified Minerals, Rocks, etc.|
List of minerals arranged by Dana 8th Edition classification
|Unclassified Minerals, Mixtures, etc.|
List of minerals for each chemical element
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
541 - 2500 Ma
|Proterozoic crystalline metamorphic rocks|
Age: Proterozoic (541 - 2500 Ma)
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. 
|Mesoproterozoic - Paleoproterozoic|
1000 - 2500 Ma
|Proterozoic I quartzite|
Age: Proterozoic (1000 - 2500 Ma)
Description: undifferentiated metamorphic
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.