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Hoskulstjern, Froland, Agder, Norwayi
Regional Level Types
HoskulstjernGroup ofQuarries
FrolandMunicipality
AgderCounty
NorwayCountry

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Latitude & Longitude (WGS84):
58° 30' 44'' North , 8° 24' 27'' East
Latitude & Longitude (decimal):
58.51238,8.40768
GRN:
N40E04
Type:
Group ofQuarries
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Rykene647(2013)17.6km
Fevik4,989(2014)21.6km
Arendal30,916(2017)21.9km
Grimstad9,561(2017)21.9km
Birkeland2,254(2010)22.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Sørlandets GeologiforeningKristiansand46km
Mindat Locality ID:
299775
Long-form identifier:
mindat:1:2:299775:2
GUID (UUID V4):
0
Other Languages:
Norwegian:
Hokulstjern, Froland, Agder, Norge


Quarries in a plagioclase dominated pegmatite.

The coordinates are from the NGU, and are the approximate midpoint between what seems to be a group of three quarries.


Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Mineral List


2 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical ListTree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘvar. Smoky Quartz4.DA.05SiO2
Group 9 - Silicates
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

HHydrogen
HⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
HⓘMuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
OⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OⓘMuscoviteKAl2(AlSi3O10)(OH)2
OⓘQuartzSiO2
OⓘQuartz var.Smoky QuartzSiO2
OⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FFluorine
FⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
NaⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
MgⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
AlⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlⓘMuscoviteKAl2(AlSi3O10)(OH)2
AlⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
SiⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiⓘMuscoviteKAl2(AlSi3O10)(OH)2
SiⓘQuartzSiO2
SiⓘQuartz var.Smoky QuartzSiO2
SiⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
KPotassium
KⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
KⓘMuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
CaⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
TiⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
FeⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Other Databases

Link to Geological Survey of Norway:13042

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Norway

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, pleaseregister so you can add to our database. This locality information is for reference purposes only. You should never attempt tovisit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holdersfor access and that you are aware of all safety precautions necessary.

References

Geological Survey of Norway. The Industrial Mineral Database. Deposit 919 - 357. Hoskulstjern (Last updated 27.apr.2007)
Ihlen P.M., Henderson I., Larsen, R.B., Lynum R. (2001): Potensielle ressurser av kvarts- og feltspatråstoffer på Sørlandet, I: Regional prøvetakning av utvalgte feltspatbrudd i Frolandsområdet. NGU Rapport 2001.044, 46 pp.
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