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Kleggåsen Ruby Quarry, Froland, Aust-Agder, Norwayi
Regional Level Types
Kleggåsen Ruby QuarryQuarry
FrolandMunicipality
Aust-AgderCounty
NorwayCountry

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Latitude & Longitude (WGS84): 58° 31' 53'' North , 8° 38' 12'' East
Latitude & Longitude (decimal): 58.53139,8.63667
GeoHash:G#: u4qhux340
Locality type:Quarry
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Arendal30,916 (2017)11.1km
Rykene647 (2013)13.5km
Fevik4,989 (2014)17.2km
Tvedestrand1,975 (2016)19.8km
Grimstad9,561 (2017)21.4km


Situated about 11 km NW of the town Arendal. The corundum-bearing rocks were discovered in 1956. It has been quarried for red corundum specimens.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
ScandinaviaRegion

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Description: Wilke (1976) describes the oligoclase as a sanidine
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift 43, 431-439
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Description: Wilke (1976) describes the oligoclase as a sanidine
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift 43, 431-439
Beryl
Formula: Be3Al2(Si6O18)
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439
'Biotite'
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift 43, 431-439
Corundum
Formula: Al2O3
Habit: (0001) and (1120), more rarely (1011).
Colour: Purplered - violet.
Description: Usual size of basal plane is 1 - 4 cm, but crystals up to 10 cm is known. Thickness of crystals are usualy to 1 cm.
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439
Corundum var: Ruby
Formula: Al2O3
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439; Eldjarn, K. (1979): Mineraler i Norge- Korund. NAGS-nytt 6 (4): 29-31
Diaspore
Formula: AlO(OH)
Description: As alteration around corundum
Reference: Wilke, H.-J. (1976): Mineral-Fundstellen Band 4: Skandinavien. Chr. Weise Verlag, München, p 55-58
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Nilssen, B. & Raade, G. (1973): Contribution to the mineralogy of Norway, No 54. On Chromian Montmorillonite (Volkonskoite) in Norway. Norsk Geologisk Tidsskrift 54: 329-331
Kyanite
Formula: Al2(SiO4)O
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Nijland, T.G., Liuaw, F., Visser, D., Maijer, C. & Senior, A. (1993): Metamorphic petrology of the Froland corundum-bearing rocks, the cooling and uplift history of the Bamble Sector, Norway. Norges Geologiske Undersøkelse Bulletin 424: 51-63
Muscovite var: Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439
Phlogopite ?
Formula: KMg3(AlSi3O10)(OH)2
Description: Could be "Mg-rich biotite" (Wilke 1976)
Reference: Wilke, H.-J. (1976): Mineral-Fundstellen Band 4: Skandinavien. Chr. Weise Verlag, München, p 55-58
Rutile
Formula: TiO2
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439
'Scapolite'
Reference: Nilssen, B. & Raade, G. (1973): Contribution to the mineralogy of Norway, No 54. On Chromian Montmorillonite (Volkonskoite) in Norway. Norsk Geologisk Tidsskrift 54: 329-331
Sillimanite
Formula: Al2(SiO4)O
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift 43, 431-439
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at arendal. Norsk Geologisk Tidsskrift 43, 431-439
Volkonskoite
Formula: Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Colour: green
Description: Found at the locality in a small body of strong hydrothermal alteration as a thin green crust around altered corundum crystals.
Reference: Nilssen, B. & Raade, G. (1973): Contribution to the mineralogy of Norway, No 54. On Chromian Montmorillonite (Volkonskoite) in Norway. Norsk Geologisk Tidsskrift 54: 329-331

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Corundum4.CB.05Al2O3
var: Ruby4.CB.05Al2O3
Diaspore4.FD.10AlO(OH)
Rutile4.DB.05TiO2
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Beryl9.CJ.05Be3Al2(Si6O18)
Kyanite9.AF.15Al2(SiO4)O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Fuchsite9.EC.15K(Al,Cr)3Si3O10(OH)2
Phlogopite ?9.EC.20KMg3(AlSi3O10)(OH)2
Sillimanite9.AF.05Al2(SiO4)O
Volkonskoite9.EC.40Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Unclassified Minerals, Rocks, etc.
'Biotite'-
'Scapolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
AX2
Rutile4.4.1.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Diaspore6.1.1.1AlO(OH)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Kyanite52.2.2c.1Al2(SiO4)O
Sillimanite52.2.2a.1Al2(SiO4)O
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Phlogopite ?71.2.2b.1KMg3(AlSi3O10)(OH)2
Sheets of 6-membered rings with 2:1 clays
Volkonskoite71.3.1a.4Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
var: Oligoclase-(Na,Ca)[Al(Si,Al)Si2O8]
'Biotite'-
Corundum
var: Ruby
-Al2O3
Muscovite
var: Fuchsite
-K(Al,Cr)3Si3O10(OH)2
'Scapolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
H Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
H DiasporeAlO(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O CorundumAl2O3
O KyaniteAl2(SiO4)O
O RutileTiO2
O VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
O BerylBe3Al2(Si6O18)
O SillimaniteAl2(SiO4)O
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
O Corundum (var: Ruby)Al2O3
O Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
O FluorapatiteCa5(PO4)3F
O DiasporeAlO(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
O AlbiteNa(AlSi3O8)
O PhlogopiteKMg3(AlSi3O10)(OH)2
FFluorine
F FluorapatiteCa5(PO4)3F
NaSodium
Na Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al CorundumAl2O3
Al KyaniteAl2(SiO4)O
Al VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Al BerylBe3Al2(Si6O18)
Al SillimaniteAl2(SiO4)O
Al Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Al Corundum (var: Ruby)Al2O3
Al Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Al DiasporeAlO(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al AlbiteNa(AlSi3O8)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si KyaniteAl2(SiO4)O
Si VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Si BerylBe3Al2(Si6O18)
Si SillimaniteAl2(SiO4)O
Si Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Si Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si AlbiteNa(AlSi3O8)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
PPhosphorus
P FluorapatiteCa5(PO4)3F
KPotassium
K Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Ca Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Ca FluorapatiteCa5(PO4)3F
TiTitanium
Ti RutileTiO2
CrChromium
Cr VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
Cr Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2

Regional Geology

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

Proterozoic
541 - 2500 Ma



ID: 3186372
Proterozoic crystalline metamorphic rocks

Age: Proterozoic (541 - 2500 Ma)

Lithology: Granitoid gneiss; orthogneiss/paragneiss

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. [154]

Mesoproterozoic
1000 - 1600 Ma



ID: 3158480
Proterozoic II granite

Age: Mesoproterozoic (1000 - 1600 Ma)

Lithology: Major:{granite}, Minor{monzonite,meta-granite,meta-monzonite}

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. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift 43, 431-439
Nilssen, B. & Raade, G. (1973): Contribution to the mineralogy of Norway, No 54. On Chromian Montmorillonite (Volkonskoite) in Norway. Norsk Geologisk Tidsskrift 54: 329-331
Wilke, H.-J. (1976): Mineral-Fundstellen Band 4: Skandinavien. Chr. Weise Verlag, München, p 55-58
Eldjarn, K. (1979): Mineraler i Norge- Korund. NAGS-nytt 6 (4): 29-31
Nijland, T.G., Liuaw, F., Visser, D., Maijer, C. & Senior, A. (1993): Metamorphic petrology of the Froland corundum-bearing rocks, the cooling and uplift history of the Bamble Sector, Norway. Norges Geologiske Undersøkelse Bulletin 424: 51-63
Nordrum, F. S. (2007): Nyfunn av mineraler i Norge 2006-2007. STEIN 34 (2), 14-26

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