|Name in Norwegian:||Glassberget, Bjerkreim, Rogaland, Norge|
|Latitude & Longitude (WGS84):||58° 41' 40'' North , 6° 23' 37'' East|
|Latitude & Longitude (decimal):||58.69457,6.39388|
|Köppen climate type:||Cfc : Subpolar oceanic climate|
Quartz crystal occurrence on private land, permission to collect must be obtained from the landowner.
The locality is known since the World War 1, and was claimed by Mr. H.G. Andersen in 1985.
The locality has often been referred to as Glassberget, Ørsdalen. This is not entirely correct, as the locality lies in the neighboring Austdalen.
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.
1 valid mineral. 1 erroneous literature entry.
Detailed Mineral List:
Reference: Berrenrath, R.(1995): Bemerkenswerte eigenfunde in Lapis. Phantomquartz aus Norwegen. LAPIS 20 (1), 60
| ⓘ |
Description: There has not been found any yellow quartz at the Glassberget locality. The yellow quartz originate from a nearby locality, see "citrine" locality
Reference: P. Andresen collection (2006)
| ⓘ Quartz var: Rock Crystal|
Reference: Knudsen, Å. (1985): Glassberget jevnes med jorden!. NAGS-nytt 12(3): 32-34
List of minerals arranged by Strunz 10th Edition classification
|Group 4 - Oxides and Hydroxides|
|ⓘ||var: Citrine ?||4.DA.05||SiO2|
|ⓘ||var: Rock Crystal||4.DA.05||SiO2|
List of minerals arranged by Dana 8th Edition classification
|Group 75 - TECTOSILICATES Si Tetrahedral Frameworks|
|Si Tetrahedral Frameworks - SiO2 with  coordinated Si|
|Unclassified Minerals, Mixtures, etc.|
|ⓘ||var: Citrine ?||-||SiO2|
|ⓘ||var: Rock Crystal||-||SiO2|
List of minerals for each chemical element
|O||ⓘ Quartz (var: Rock Crystal)||SiO2|
|O||ⓘ Quartz (var: Citrine)||SiO2|
|Si||ⓘ Quartz (var: Rock Crystal)||SiO2|
|Si||ⓘ Quartz (var: Citrine)||SiO2|
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 granite|
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.