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Torbjørnsbu Mine, Barbudalen, Arendal Iron Mines, Arendal, Aust-Agder, Norwayi
Regional Level Types
Torbjørnsbu MineMine
BarbudalenValley
Arendal Iron MinesGroup of Mines
ArendalMunicipality
Aust-AgderCounty
NorwayCountry

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Name in Norwegian:Torbjørnsbu gruve, Barbudalen, Arendal jerngruver, Arendal, Aust-Agder, Norge
Latitude & Longitude (WGS84): 58° 28' 6'' North , 8° 45' 3'' East
Latitude & Longitude (decimal): 58.46858,8.75094
GeoHash:G#: u4qhx5uhp
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Arendal30,916 (2017)1.5km
Rykene647 (2013)9.3km
Fevik4,989 (2014)11.0km
Grimstad9,561 (2017)16.9km
Tvedestrand1,975 (2016)20.0km
Other/historical names associated with this locality:Thorbjørnsbo;Torbjørnsbo;Torbiornsbo; Grube Thorbjörn; Langsæ gruve


An abandoned Fe mine close to the lake Langsævannet in Arendal, behind Bomuldsfabrikken, Oddenveien 5. Mining started here in the 1570s. It was beside the Steinsås Fe mine, the oldest Fe mine in Arendal (and Aust-Agder). Epidote was described from this mine by d'Andrada in 1800 under the name akanthikone (acanthicone).

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
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


16 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:

Almandine ?
Formula: Fe2+3Al2(SiO4)3
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Analcime
Formula: Na(AlSi2O6) · H2O
Andradite
Formula: Ca3Fe3+2(SiO4)3
'Apatite'
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
'Axinite Group'
Azurite
Formula: Cu3(CO3)2(OH)2
Calcite
Formula: CaCO3
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Gahnite
Formula: ZnAl2O4
'Garnet Group'
Formula: X3Z2(SiO4)3
Grossular
Formula: Ca3Al2(SiO4)3
'Heulandite subgroup'
'Hornblende'
'K Feldspar'
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Magnetite
Formula: Fe2+Fe3+2O4
Malachite
Formula: Cu2(CO3)(OH)2
'Mica Group'
Orthoclase
Formula: K(AlSi3O8)
Quartz
Formula: SiO2
'Scapolite'
Titanite
Formula: CaTi(SiO4)O
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Gahnite4.BB.05ZnAl2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Almandine ?9.AD.25Fe2+3Al2(SiO4)3
Analcime9.GB.05Na(AlSi2O6) · H2O
Andradite9.AD.25Ca3Fe3+2(SiO4)3
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Grossular9.AD.25Ca3Al2(SiO4)3
Orthoclase9.FA.30K(AlSi3O8)
Titanite9.AG.15CaTi(SiO4)O
Vesuvianite9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apatite'-
'Axinite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Heulandite subgroup'-
'Hornblende'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Mica Group'-
'Scapolite'-

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Gahnite7.2.1.4ZnAl2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine ?51.4.3a.2Fe2+3Al2(SiO4)3
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Grossular51.4.3b.2Ca3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
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
Orthoclase76.1.1.1K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Unclassified Minerals, Mixtures, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apatite'-
'Axinite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Heulandite subgroup'-
'Hornblende'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Mica Group'-
'Scapolite'-

List of minerals for each chemical element

HHydrogen
H AzuriteCu3(CO3)2(OH)2
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H AnalcimeNa(AlSi2O6) · H2O
H MalachiteCu2(CO3)(OH)2
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
CCarbon
C AzuriteCu3(CO3)2(OH)2
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O AzuriteCu3(CO3)2(OH)2
O GahniteZnAl2O4
O GrossularCa3Al2(SiO4)3
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Garnet GroupX3Z2(SiO4)3
O MagnetiteFe2+Fe23+O4
O QuartzSiO2
O CalciteCaCO3
O K Feldspar (var: Adularia)KAlSi3O8
O AnalcimeNa(AlSi2O6) · H2O
O TitaniteCaTi(SiO4)O
O MalachiteCu2(CO3)(OH)2
O ZirconZr(SiO4)
O OrthoclaseK(AlSi3O8)
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O AndraditeCa3Fe23+(SiO4)3
O AlmandineFe32+Al2(SiO4)3
FFluorine
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Na AnalcimeNa(AlSi2O6) · H2O
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
AlAluminium
Al GahniteZnAl2O4
Al GrossularCa3Al2(SiO4)3
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al K Feldspar (var: Adularia)KAlSi3O8
Al AnalcimeNa(AlSi2O6) · H2O
Al OrthoclaseK(AlSi3O8)
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al AlmandineFe32+Al2(SiO4)3
SiSilicon
Si GrossularCa3Al2(SiO4)3
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Garnet GroupX3Z2(SiO4)3
Si QuartzSiO2
Si K Feldspar (var: Adularia)KAlSi3O8
Si AnalcimeNa(AlSi2O6) · H2O
Si TitaniteCaTi(SiO4)O
Si ZirconZr(SiO4)
Si OrthoclaseK(AlSi3O8)
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si AndraditeCa3Fe23+(SiO4)3
Si AlmandineFe32+Al2(SiO4)3
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca GrossularCa3Al2(SiO4)3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca TitaniteCaTi(SiO4)O
Ca AndraditeCa3Fe23+(SiO4)3
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe AndraditeCa3Fe23+(SiO4)3
Fe AlmandineFe32+Al2(SiO4)3
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu MalachiteCu2(CO3)(OH)2
ZnZinc
Zn GahniteZnAl2O4
ZrZirconium
Zr ZirconZr(SiO4)

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: 3131169
Proterozoic II gneiss

Age: Mesoproterozoic (1000 - 1600 Ma)

Description: undifferentiated metamorphic

Lithology: Gneiss

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)
d'Andrada, J.B. (1800) Exposé succint des caractères et des propriétés de plusieurs nouveaux minéraux de Suède et de Norwège, avec quelques observations chimiques faites sur ces substances. Journal de Physique, de Chimie, d'Histoire Naturelle et des Arts, 51, 239-246.
Scheerer, T. (1845) Geognostisk-mineralogiske Skizzer samlede paa en Reise sommeren 1842. Nyt Magazin for Naturvidenskaben, 4, 126-164.
Weibye, P.C. (1848) Beiträge zur topograpischen Mineralogie Norwegens. Archiv für Mineralogie, Geognosie, Bergbau und Hüttenkunde (C.J.B. Karsten und von Dechen), 22, 465-544.
Kjerulf, T. and Dahll, T. (1861) Om jernertsenes forekomst ved Arendal, Næs og Kragerø. Nyt Magazin for Naturvidenskaberne, 11, 293-359.
Hamran, U. (1989) Thorbjørnsbo-Langsæ gruve. SG-nytt [A local magazine for the Sørlandet Geological Society, Norway], 4(2), 13-14 (unpaginated).


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