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Auselmyra, Tvedestrand, Aust-Agder, Norwayi
Regional Level Types
AuselmyraPegmatite
TvedestrandMunicipality
Aust-AgderCounty
NorwayCountry

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Name in Norwegian:Auselmyra, Tvedestrand, Aust-Agder, Norge
Latitude & Longitude (WGS84): 58° 39' 2'' North , 8° 52' 33'' East
Latitude & Longitude (decimal): 58.65061,8.87596
GeoHash:G#: u4qm9vp28
Locality type:Pegmatite
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Tvedestrand1,975 (2016)4.5km
Myra544 (2014)11.0km
Eikeland408 (2012)21.0km
Arendal30,916 (2017)21.9km
Risør4,475 (2016)22.1km
Other/historical names associated with this locality:Ausel; Auselheia; Auselmyr gruber


Granite pegmatite worked for feldspar and uranium located in the Auselmyra-Auselheia area. Brøgger (1906) mentions minerals found in a granite pegmatite at Auselheia (Ausel). Later litterature refers this to as "Auselmyra gruber" [Auselmyra mines].
NGU has registered an uranium propect with the name "Auselmyra" with the coordinates: 58.6518250,8.8641790. (Coordinates not confirmed, and a study of the altitude maps reveals nothing at these coordinates)

A study of the altitude map reveal one feature that cannot be anything else than a small mine (synk) at Auselheia at 58.65061, 8.875959999999964, and these coordinates are given here.
NW of this quarry is the Gruveheia.

Two uncertain, possible quarries in the area can be found at:

58.6513°N 8.87372°Ø
58.65069°N 8.87414°Ø

These needs to be confirmed, might turn out to be a fault.
Coordinates © Kartverket - https://www.kartverket.no

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Fennoscandian ShieldShield
ScandinaviaRegion

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

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!

Rock list contains entries from the region specified including sub-localities

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Alphabetical List Tree Diagram

Detailed Mineral List:

'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. 1-162 [p.45]
'Monazite'
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. 1-162 [p.45]
Rutile
Formula: TiO2
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6,[on ilmenorutile p. 46]
Rutile var: Ilmenorutile
Formula: Fex(Nb,Ta)2x · 4Ti1-xO2
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6,[on ilmenorutile p. 46]
Thorite
Formula: Th(SiO4)
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. 1-162 [p.45]
Thorite var: Orangite
Formula: Th(SiO4)
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. 1-162 [p.45]
Uraninite
Formula: UO2
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. 1-162 [p.45]
Uraninite var: Thorian Uraninite
Formula: (U,Th)O2
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. 1-162 [p.45]
Xenotime-(Y)
Formula: Y(PO4)
Reference: Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6. 1-162 [p.45]

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Rutile4.DB.05TiO2
var: Ilmenorutile4.DB.05Fex(Nb,Ta)2x · 4Ti1-xO2
Uraninite4.DL.05UO2
var: Thorian Uraninite4.DL.05(U,Th)O2
Group 8 - Phosphates, Arsenates and Vanadates
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Thorite9.AD.30Th(SiO4)
var: Orangite9.AD.30Th(SiO4)
Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Monazite'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
var: Ilmenorutile4.4.1.2Fex(Nb,Ta)2x · 4Ti1-xO2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
Unclassified Minerals, Mixtures, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Monazite'-
Thorite
var: Orangite
-Th(SiO4)
Uraninite
var: Thorian Uraninite
-(U,Th)O2
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
OOxygen
O Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
O Uraninite (var: Thorian Uraninite)(U,Th)O2
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O Xenotime-(Y)Y(PO4)
O Thorite (var: Orangite)Th(SiO4)
O RutileTiO2
O UraniniteUO2
O ThoriteTh(SiO4)
SiSilicon
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si Thorite (var: Orangite)Th(SiO4)
Si ThoriteTh(SiO4)
PPhosphorus
P Xenotime-(Y)Y(PO4)
TiTitanium
Ti Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
Ti RutileTiO2
FeIron
Fe Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
YYttrium
Y Xenotime-(Y)Y(PO4)
NbNiobium
Nb Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
TaTantalum
Ta Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
ThThorium
Th Uraninite (var: Thorian Uraninite)(U,Th)O2
Th Thorite (var: Orangite)Th(SiO4)
Th ThoriteTh(SiO4)
UUranium
U Uraninite (var: Thorian Uraninite)(U,Th)O2
U UraniniteUO2

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 - Paleoproterozoic
1000 - 2500 Ma



ID: 3131158
Proterozoic I quartzite

Age: Proterozoic (1000 - 2500 Ma)

Description: undifferentiated metamorphic

Lithology: Major:{quartzite}, Minor{mica schist,marble,amphibolite}

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)
Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6, [on ilmenorutile p. 45]
Stadheim, J. (1933) Lisletjern og Auselmyr gruber. Norges geologiske undersøkelse. Bergarkivet BA 2663, 3p.
Bjørlykke, H. (1949) Rapport over befaring av uranforekomster ved Tvedestrand. Norges geologiske undersøkelse. BA 3467, 3 p.
Geological Survey of Norway. The Ore Database. Deposit Area 914 - 008. Auselmyra. (Last updated 17.jan.1997)

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