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Frikstad 09 Feldspar Quarry (Steli), Frikstad, Iveland, Aust-Agder, Norwayi
Regional Level Types
Frikstad 09 Feldspar Quarry (Steli)Quarry
Frikstad- not defined -
IvelandMunicipality
Aust-AgderCounty
NorwayCountry

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Key
Latitude & Longitude (WGS84):
58° 31' 55'' North , 7° 53' 59'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Byglandsfjord332 (2014)15.7km
Birkeland2,254 (2010)29.6km
Vennesla10,931 (2014)29.6km
Tveit1,397 (2010)35.6km
Justvik1,630 (2014)38.0km
Name(s) in local language(s):
Frikstad 9 feltspatbrudd (Steli), Frikstad (Frigstad), Iveland kommune, Aust-Agder fylke, Norge


Several feldspar quarries in a large granite pegmatite dyke. The pegmatite forms a hill about 100m broad and has been worked at several places. A gadolinite crystal weighing 200kg has been found here. A pyrite mass of more than 100kg has been found here. Some of the microcline crystals contained more than 200 tons of feldspar.

Bjørlykke locality nr 96.

Bjørlykke places nr. 97 "Frikstad 10" SW of "Frikstad 9" on his map. But he writes that Frikstad 10 is situated E of Frikstad 9. Actually, there is no quarry E of the here given coordinates. But to the NNE there is actually a quarry.

(Note RW 24-3-2018):
After an extensive study of the altitude map, aerial pictures, Løchen's map , Andersen's and Barth's maps, the conclusion must be that both Barth's and Løchen's maps are wrong.
Where Barth places his nr. 96 and 97 quarries, there is actually only one quarry discernable.
Løchen (2009) describes Frikstad 10 (Bjørlykke 97) as a 25x5m large quarry. There is no such quarry in that area.
But 370 m to the west, there are four quarries situated close together.
The quarry that can be seen at the place where Bjørlykke places his 96/97 quarries, is considerable smaller than the dimensions Løchen gives up (11x4m).
It is impossible to find any trace of a quarry in a 100m circle around this one.
However, on Andersen's map, the Steli location is about 800m (not 500m) north of the Vestre Frikstad farm. And in that pegmatite are four quarries.
The only problem now is, that there is no quarry 100m NE of Frikstad 9...
The nearest quarry fitting the description of being 25x5m is situated 335m to the NE.

Coordinates © Kartverket - https://www.kartverket.no

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Fennoscandian ShieldShield
ScandinaviaRegion

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


4 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
'Gadolinite'
Reference: Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
Microcline
Formula: K(AlSi3O8)
Reference: Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
Pyrite
Formula: FeS2
Reference: Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
Quartz
Formula: SiO2
Reference: Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Gadolinite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Gadolinite'-

List of minerals for each chemical element

HHydrogen
H MuscoviteKAl2(AlSi3O10)(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
OOxygen
O MuscoviteKAl2(AlSi3O10)(OH)2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O QuartzSiO2
O MicroclineK(AlSi3O8)
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al MicroclineK(AlSi3O8)
SiSilicon
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si QuartzSiO2
Si MicroclineK(AlSi3O8)
SSulfur
S PyriteFeS2
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K MicroclineK(AlSi3O8)
FeIron
Fe PyriteFeS2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311.
Barth, T. F. W. (1931) Feltspat III. Forekomster i Iveland og Vegusdal i Aust-Agder og i flere herreder i Vest-Agder. Norges Geologiske Undersøkelse nr 128b, 111-150.
Stensrud, S., (2009): De opptredende mineraler på granittpegmatittganger i Iveland og Evje. Unpublished paper based on 4 previous papers written together with Johan Løchen.

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