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Hella 1 Feldspar Quarry, Helle, Stokken, Arendal, Aust-Agder, Norway

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Name in Norwegian:Hella 1 (Helle feltspatbrudd), Helle, Stokken, Arendal, Aust-Agder, Norge
Latitude & Longitude (WGS84): 58° 30' 11'' North , 8° 51' 17'' East
Latitude & Longitude (decimal): 58.50329,8.85497
GeoHash:G#: u4qkc6pyr
Locality type:Quarry (Abandoned)
Köppen climate type:Dfb : Warm-summer humid continental climate


Pegmatite-dike, 10-15 m thick, near Arendal, located on the western shore of Neskilen, about 200 m south of the Helle farm. Quarry operation started around 1860. Already abandoned in 1930s.

Coordinates needs to be confirmed.

Regions containing this locality

Scandinavia

Region - 2,033 mineral species & varietal names listed

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


6 valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

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
Formula: Na(AlSi3O8)
Reference: Schetelig, J. (1916): Skapolit fra syd-norske granitpegmatitganger. Norsk Geologisk tidsskrift. 3, 1-20
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Andersen, O. (1931): Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b,1-109 [p.76]
'Alkali Feldspar'
Reference: Andersen, O. (1931) Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b: 1-109. [p.76]
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Forbes, D. & Dahll, T.(1855): Mineralogiske Iagttagelser omkring Arendal og Kragerö. Nyt Magazin for Naturvidenskaberne, 8, 213-229 + 2 plates
'Biotite'
Reference: Andersen, O. (1931): Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b,1-109 [p.76]
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Reference: Andersen, O. (1931): Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b,1-109 [p.76]
'commodity:Feldspar'
Reference: From USGS MRDS database
'Fergusonite'
Reference: Forbes, D. & Dahll, T.(1855): Mineralogiske Iagttagelser omkring Arendal og Kragerö. Nyt Magazin for Naturvidenskaberne, 8, 213-229 + 2 plates
'Gneiss'
Reference: Andersen, O. (1931) Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b: 1-109. [p.76]
'Graphic granite'
Reference: Andersen, O. (1931) Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b: 1-109. [p.76]
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Andersen, O. (1931): Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b,1-109 [p.76]
'Pegmatite'
Reference: Andersen, O. (1931) Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b: 1-109. [p.76]
Quartz
Formula: SiO2
Reference: Andersen, O. (1931): Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b,1-109 [p.76]
'Scapolite'
Description: As mica and albite pseudomorphs after scapolite
Reference: Schetelig, J. (1916): Skapolit fra syd-norske granitpegmatitganger. Norsk Geologisk tidsskrift. 3, 1-20
Yttrotantalite-(Y)
Formula: (Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
Reference: Andersen, O. (1931): Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b,1-109 [p.76]
Zircon
Formula: Zr(SiO4)
Description: Metamict zircon variety.
Reference: Forbes, D. & Dahll, T.(1855): Mineralogiske Iagttagelser omkring Arendal og Kragerö. Nyt Magazin for Naturvidenskaberne, 8, 213-229 + 2 plates
Zircon var: Alvite (FRL)
Formula: Zr(SiO4)
Description: Metamict zircon variety.
Reference: Forbes, D. & Dahll, T.(1855): Mineralogiske Iagttagelser omkring Arendal og Kragerö. Nyt Magazin for Naturvidenskaberne, 8, 213-229 + 2 plates

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Euxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Quartz4.DA.05SiO2
Yttrotantalite-(Y)4.DG.10(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
var: Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Zircon9.AD.30Zr(SiO4)
var: Alvite (TL)9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Alkali Feldspar'-
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Biotite-
Fergusonite-
Gneiss-
Graphic granite-
Pegmatite-
Scapolite-

List of minerals arranged by Dana 8th Edition classification

Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Yttrotantalite-(Y)8.1.3.1(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
AB2O6
Euxenite-(Y)8.3.8.2(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
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
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Rocks, etc.
var: Oligoclase-(Na,Ca)[Al(Si,Al)Si2O8]
'Alkali Feldspar'-
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Biotite'-
'Fergusonite'-
'Gneiss'-
'Graphic granite'-
'Pegmatite'-
'Scapolite'-
Zircon
var: Alvite (FRL)
-Zr(SiO4)

List of minerals for each chemical element

HHydrogen
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
OOxygen
O AlbiteNa(AlSi3O8)
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O Zircon (var: Alvite)Zr(SiO4)
O Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
O MuscoviteKAl2(AlSi3O10)(OH)2
O Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
O QuartzSiO2
O Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
O ZirconZr(SiO4)
NaSodium
Na AlbiteNa(AlSi3O8)
Na Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
AlAluminium
Al AlbiteNa(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si Zircon (var: Alvite)Zr(SiO4)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Si QuartzSiO2
Si ZirconZr(SiO4)
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ca Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
TiTitanium
Ti Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
FeIron
Fe Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
YYttrium
Y Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Y Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
ZrZirconium
Zr Zircon (var: Alvite)Zr(SiO4)
Zr ZirconZr(SiO4)
NbNiobium
Nb Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Nb Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
CeCerium
Ce Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
TaTantalum
Ta Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ta Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4
ThThorium
Th Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
UUranium
U Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
U Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4

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)
Forbes, D. & Dahll, T. (1855) Mineralogiske Iagttagelser omkring Arendal og Kragerö. Nyt Magazin for Naturvidenskaberne, 8: 213-229 + 2 plates (in norwegian).
Andersen, O. (1931) Feltspat II. Forekomster i fylkene Buskerud og Telemark, i flere herreder i Aust-Agder og i Hidra i Vest-Agder. Norges Geologiske Undersøkelse 128b: 1-109. [p.76]
Geological Survey of Norway. The Industrial Mineral Database. Deposit Area 906 - 309. Hella. (Last updated 27. Apr. 2007)

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