A feldspar quarry (originally a test pit) worked in a granite pegmatite dike located near the Eptevann farm, about 50 m W of the main road. The quarry was originally operated for thortveitite, which is said to have been abundant.

Stensrud (2009) writes that this was probably one of the best thortveitite localities in the world.

In Bjørlykke's time, it was just a tiny quarry, but Stensrud (2009) writes that the quarry was considerably expanded in later years.

Bjørlykke locality n° 85.

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

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Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

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

ⓘ Feldspar

Mineral List

10 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

ⓘ Amphibolite

ⓘ 'Pegmatite'

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

Reference: Schetelig, J. (1922): Thortveitit- Ein scandiumsilikat, (Sc, Y)2Si2O7. in Brøgger, W.C, Vogt, Th. & Schetelig, J. (1922): Die Mineralien der südnorwegischen Granitpegmatitgänge. II. Silikate der seltenen Erde. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1922. 11, 51-87

ⓘ Albite var. Oligoclase

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

ⓘ '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

ⓘ 'Allanite Group'

Formula: {A1²⁺REE³⁺}{M³⁺₂M3²⁺}(Si₂O₇)(SiO₄)O(OH)

ⓘ 'Almandine-Spessartine Series'

Reference: Stensrud, S. (2009) De opptredende mineraler på granittpegmatittganger i Iveland og Evje. Unpublished paper based on 4 previous papers written together with Johan Løchen.

ⓘ Beryl

Formula: Be₃Al₂(Si₆O₁₈)

ⓘ '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

ⓘ Euxenite-(Y)

Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆

ⓘ Fergusonite-(Y)

Formula: YNbO₄

Reference: Stensrud, S. (2009) De opptredende mineraler på granittpegmatittganger i Iveland og Evje. Unpublished paper based on 4 previous papers written together with Johan Løchen.

ⓘ Microcline

Formula: K(AlSi₃O₈)

Reference: Stensrud, S. (2009) De opptredende mineraler på granittpegmatittganger i Iveland og Evje. Unpublished paper based on 4 previous papers written together with Johan Løchen.

ⓘ 'Monazite'

ⓘ 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

ⓘ 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

ⓘ Rutile

Formula: TiO₂

Reference: Schetelig, J. (1913): Mineralogische Studien, I. Norsk Geologisk Tidsskrift 2: 3-37 (p. 11)

ⓘ Rutile var. Ilmenorutile

Formula: Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂

Reference: Schetelig, J. (1913): Mineralogische Studien, I. Norsk Geologisk Tidsskrift 2: 3-37 (p. 11)

ⓘ Thortveitite

Formula: Sc₂Si₂O₇

Habit: Prismatic crystals

Colour: greyish-green

ⓘ Xenotime-(Y) ?

Formula: Y(PO₄)

Gallery:

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
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Rutile	4.DB.05	TiO₂
ⓘ	var. Ilmenorutile	4.DB.05	Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Fergusonite-(Y)	7.GA.05	YNbO₄
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y) ?	8.AD.35	Y(PO₄)
Group 9 - Silicates
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Oligoclase	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
ⓘ	Beryl	9.CJ.05	Be₃Al₂(Si₆O₁₈)
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Thortveitite	9.BC.05	Sc₂Si₂O₇
Unclassified Minerals, Rocks, etc.
ⓘ	'Albite-Anorthite Series'	-
ⓘ	'Allanite Group'	-	{A1²⁺REE³⁺}{M³⁺₂M3²⁺}(Si₂O₇)(SiO₄)O(OH)
ⓘ	'Almandine-Spessartine Series'	-
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
ⓘ	'Monazite'	-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX₂
ⓘ	Rutile	4.4.1.1	TiO₂
ⓘ	var. Ilmenorutile	4.4.1.2	Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO₄
ⓘ	Fergusonite-(Y)	8.1.1.1	YNbO₄
AB₂O₆
ⓘ	Euxenite-(Y)	8.3.8.2	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Group 55 - SOROSILICATES Si₂O₇ Groups,Generally with no Additional Anions
Si₂O₇ Groups, Generally with no Additional Anions with cations in [6] coordination
ⓘ	Thortveitite	55.2.1a.4	Sc₂Si₂O₇
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si₆O₁₈] rings; possible (OH) and Al substitution
ⓘ	Beryl	61.1.1.1	Be₃Al₂(Si₆O₁₈)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
ⓘ	Muscovite	71.2.2a.1	KAl₂(AlSi₃O₁₀)(OH)₂
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO₂ with [4] coordinated Si
ⓘ	Quartz	75.1.3.1	SiO₂
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
ⓘ	Albite	76.1.3.1	Na(AlSi₃O₈)
ⓘ	Microcline	76.1.1.5	K(AlSi₃O₈)
Unclassified Minerals, Mixtures, etc.
ⓘ	Albite var. Oligoclase	-	(Na,Ca)[Al(Si,Al)Si₂O₈]
ⓘ	'Albite-Anorthite Series'	-
ⓘ	'Allanite Group'	-	{A1²⁺REE³⁺}{M³⁺₂M3²⁺}(Si₂O₇)(SiO₄)O(OH)
ⓘ	'Almandine-Spessartine Series'	-
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
ⓘ	'Monazite'	-
ⓘ	Xenotime-(Y) ?	-	Y(PO₄)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Allanite Group	{A1²⁺REE³⁺}{M₂³⁺M3²⁺}(Si₂O₇)(SiO₄)O(OH)
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Be	Beryllium
Be	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
O	Oxygen
O	ⓘ Rutile var. Ilmenorutile	Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂
O	ⓘ Thortveitite	Sc₂Si₂O₇
O	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Quartz	SiO₂
O	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
O	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
O	ⓘ Allanite Group	{A1²⁺REE³⁺}{M₂³⁺M3²⁺}(Si₂O₇)(SiO₄)O(OH)
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Rutile	TiO₂
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Fergusonite-(Y)	YNbO₄
O	ⓘ Xenotime-(Y)	Y(PO₄)
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
Na	Sodium
Na	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Albite	Na(AlSi₃O₈)
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
Al	Aluminium
Al	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Microcline	K(AlSi₃O₈)
Si	Silicon
Si	ⓘ Thortveitite	Sc₂Si₂O₇
Si	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	ⓘ Quartz	SiO₂
Si	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Si	ⓘ Allanite Group	{A1²⁺REE³⁺}{M₂³⁺M3²⁺}(Si₂O₇)(SiO₄)O(OH)
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Microcline	K(AlSi₃O₈)
P	Phosphorus
P	ⓘ Xenotime-(Y)	Y(PO₄)
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Microcline	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Sc	Scandium
Sc	ⓘ Thortveitite	Sc₂Si₂O₇
Ti	Titanium
Ti	ⓘ Rutile var. Ilmenorutile	Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂
Ti	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Ti	ⓘ Rutile	TiO₂
Fe	Iron
Fe	ⓘ Rutile var. Ilmenorutile	Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg)([Si/Al]Si₂O₁₀)(OH/F)₂
Y	Yttrium
Y	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Y	ⓘ Fergusonite-(Y)	YNbO₄
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Nb	Niobium
Nb	ⓘ Rutile var. Ilmenorutile	Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂
Nb	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Nb	ⓘ Fergusonite-(Y)	YNbO₄
Ce	Cerium
Ce	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Ta	Tantalum
Ta	ⓘ Rutile var. Ilmenorutile	Fe_x(Nb,Ta)_2x · 4Ti_1-xO₂
Ta	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
Th	Thorium
Th	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆
U	Uranium
U	ⓘ Euxenite-(Y)	(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆

Geochronology

Mineralization age: Paleoproterozoic : 1750 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic Time

Rocks, Minerals and Events

1750 Ma

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)

Schetelig, J. (1922) Thortveitit- Ein scandiumsilikat, (Sc,Y)2Si2O7. in Brøgger, W.C, Vogt, Th., and Schetelig, J. (1922) Die Mineralien der südnorwegischen Granitpegmatitgänge. II. Silikate der seltenen Erde. Videnskapsselskapets Skrifter. I. Mat-Naturv. Klasse 1922. 11, 51-87.

Bjørlykke, H. (1934) The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311.

Marble, J.P. and Glass, J.J. (1942) Some new data on thortveitite. American Mineralogist 27: 696-698 [analysis of thortveitite from Eptevann 2].

Stensrud, S. (2009) De opptredende mineraler på granittpegmatittganger i Iveland og Evje. Unpublished paper based on 4 previous papers written together with Johan Løchen.

External Links

http://njg.geologi.no/images/NJG_articles/NGT_14_3_4_211-311.pdf [Bjørlykke 1934]
http://www.minsocam.org/ammin/AM27/AM27_696.pdf [Marble & Glass 1942]

Other Regions, Features and Areas containing this locality

Baltic Shield (Fennoscandian Shield)Shield

Eurasian PlateTectonic Plate

EuropeContinent

ScandinaviaRegion

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

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Eptevatnet 02 Thortveitite Quarry, Eptevatnet, Iveland, Agder, NorwayiRegional Level TypesEptevatnet 02 Thortveitite QuarryQuarry EptevatnetLake IvelandMunicipality AgderCounty NorwayCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals arranged by Dana 8th Edition classification

List of minerals for each chemical element

Geochronology

References

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Other Regions, Features and Areas containing this locality

Eptevatnet 02 Thortveitite Quarry, Eptevatnet, Iveland, Agder, Norway i
Regional Level Types
Eptevatnet 02 Thortveitite Quarry Quarry
Eptevatnet Lake
Iveland Municipality
Agder County
Norway Country