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Helleknuten Prospect, Forsand, Rogaland, Norwayi
Regional Level Types
Helleknuten ProspectProspect
ForsandMunicipality
RogalandCounty
NorwayCountry

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Latitude & Longitude (WGS84):
58° 52' 1'' North , 6° 8' 31'' East
Latitude & Longitude (decimal):
58.86708,6.14216
GeoHash:
G#: u4kqgu2td
GRN:
N40E03
Type:
Prospect
Age:
1600 to 1000 Ma
Geologic Time:
Mesoproterozoic
Reference for age:
Geological Survey of Norway. The Ore Database. Deposit Area 1129 - 005. Helleknuten
Köppen climate type:
Cfc : Subpolar oceanic climate
Nearest Settlements:
PlacePopulationDistance
Oltedal725 (2013)7.4km
Høle318 (2012)8.4km
Gilja248 (2013)9.5km
Hommersåk5,692 (2013)17.9km
Sviland347 (2012)18.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Sandnes SteinklubbSandnes24km
Stavanger GeologiforeningStavanger28km
Mindat Locality ID:
267818
Long-form identifier:
mindat:1:2:267818:7
GUID (UUID V4):
0
Other Languages:
Norwegian:
Helleknuten skjerp, Forsand, Rogaland, Norge


The prospect is situated on a steep slope that starts from a rock plateau featuring a powerline. It consists of a 4m long and 3m deep pit at the bottom of a 10-15m wide steep ledge. The main rock over the pit is dominated by medium to coarse-grained granitic gneiss, with a few mafic bands. The host rock in the tailings is difficult to identify: it is partly intensely folded, partly brecciated and usually rusted, but presumably represents an altered and deformed gabbroic lense in the gneiss. It contains irregular, 5-10cm thick lenses of massive pyrrhotite with minor chalcopyrite. (Source: NGU database).

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals.

Rock Types Recorded

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

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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Feldspar Group'-
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OOxygen
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ Garnet GroupX3Z2(SiO4)3
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiSilicon
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Garnet GroupX3Z2(SiO4)3
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ PyrrhotiteFe1-xS
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
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
Feⓘ ChalcopyriteCuFeS2
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyrrhotiteFe1-xS
NiNickel
Niⓘ Pentlandite(NixFey)Σ9S8
CuCopper
Cuⓘ ChalcopyriteCuFeS2

Other Databases

Link to Geological Survey of Norway:5013

Other Regions, Features and Areas containing this locality

Baltic Shield (Fennoscandian Shield)Shield
Eurasian PlateTectonic Plate
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 Ore Database. Deposit Area 1129 - 005. Helleknuten (Last updated 25. Feb. 2005).
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