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

Regions containing this locality

Eurasian Plate	Tectonic Plate
Europe	Continent
Scandinavia	Region

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.

ⓘ Feldspar

Mineral List

10 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

ⓘ 'Pegmatite'

ⓘ Amphibolite

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 Unpublished paper based on 4 previous papers written together with Johan Løchen.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'

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 Unpublished paper based on 4 previous papers written together with Johan Løchen.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)

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'	-
ⓘ	'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'	-
ⓘ	'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	ⓘ 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	ⓘ 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)
Na	Sodium
Na	ⓘ Albite (var: Oligoclase)	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Albite	Na(AlSi₃O₈)
Al	Aluminium
Al	ⓘ Albite (var: Oligoclase)	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
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	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Microcline	K(AlSi₃O₈)
P	Phosphorus
P	ⓘ Xenotime-(Y)	Y(PO₄)
K	Potassium
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
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

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: 3133829	Proterozoic I gabbro Age: Proterozoic (1000 - 2500 Ma) Description: undifferentiated metamorphic Lithology: Major:{gabbro}, Minor{diorite,plutonic ultramafic group,meta-gabbro} 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)

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]

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