Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Krokavatnet southwest, Hå, Rogaland, Norwayi
Regional Level Types
Krokavatnet southwestDeposit
HåMunicipality
RogalandCounty
NorwayCountry

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Latitude & Longitude (WGS84):
58° 29' 38'' North , 5° 50' 57'' East
Latitude & Longitude (decimal):
58.49415,5.84942
GeoHash:
G#: u4khv0e3j
GRN:
N39E03
Type:
Deposit
Age:
2500 to 541 ± 1.0 Ma
Geologic Time:
Proterozoic
Reference for age:
Geological Survey of Norway. The Natural Stone Database. Deposit Area 1119 - 615. Krokavatnet sydvest.
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Hellvik643 (2013)2.4km
Sirevåg385 (2014)3.0km
Ogna330 (2012)3.8km
Brusand384 (2013)8.0km
Egersund9,502 (2010)9.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Sandnes SteinklubbSandnes42km
Mindat Locality ID:
267704
Long-form identifier:
mindat:1:2:267704:3
GUID (UUID V4):
0
Other Languages:
Norwegian:
Krokavatnet sydvest, Hå, Rogaland, Norge


This locality is large and relatively homogeneous with good play of colour in blue and violet. It is connected to the Krokavatnet Southeast in Hellvik.

The localities for anorthosite with labradorite showing schiller effect (labradorescence) is located both in the municipalities of Hå and Eigersund. There are currently (2015) two active quarries for labradorescenct anorthosite for ornamental use, the Krokavatnet Southeast in Eigersund, and Sørskog in Hå. The area is extensively mapped and several localities have been identified. The anorthosite from here is sold as " Blue Antique" or " Labrador Antique".

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List


Rock Types Recorded

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

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Gallery:

List of minerals arranged by Strunz 10th Edition classification

Unclassified
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

OOxygen
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
AlAluminium
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
CaCalcium
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8

Other Databases

Link to Geological Survey of Norway:14713

Other Regions, Features and Areas containing this locality

Baltic Shield (Fennoscandian Shield)Shield
Eurasian PlateTectonic Plate
EuropeContinent
ScandinaviaRegion

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, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Geological Survey of Norway. The Natural Stone Database. Deposit Area 1119 - 615. Krokavatnet sydvest. (Last updated 28.mai.2017)
Bjerkgård, T., Heldal, T., Kjølle, I., Lund, B., Meyer, G., and Schiellerup, H. (2003) Natursteinsundersøkelser i Egersund-Ogna anortositt-kompleks: Status våren 2003. Norges geologiske undersøkelse, NGU-report. No.2003.030, 17 pages
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