A locality described by Müller et al. (2006).

He described the quarry as a 7 m wide, 4 m high and 10 m long underground workings, ending in a 20 m high, water-filles stope.
This pegmatite is interesting, while during the second worldwar the Germans mined here for uranium minerals and muscovite.
Müller spells the name as "Bjortjørn", but the name on modern maps is spelled as Bjortjønn.

Originally this locality was registered as being located in the Mykland parish, but it is actually closer to Hynnekleiv, which is located in between Mykland and Bjortjønn.

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

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Standard Detailed Gallery Strunz 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!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ 'Pegmatite'

Detailed Mineral List:

ⓘ 'Alkali Feldspar'

References:

Müller, Axel, Kearsley, A., Spratt, J., Seltmann, R. (2012) Petrogenetic implications of magmatic garnet in granitic pegmatites from Southern Norway. The Canadian Mineralogist, 50 (4) 1095-1115 doi:10.3749/canmin.50.4.1095

ⓘ Allanite-(Ce)

Formula: (CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)

References:

ⓘ 'Almandine-Spessartine Series'

References:

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

ⓘ 'Monazite'

Formula: REE(PO₄)

References:

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

ⓘ Pyrite

Formula: FeS₂

References:

ⓘ Quartz

Formula: SiO₂

References:

ⓘ Samarskite-(Y)

Formula: YFe³⁺Nb₂O₈

References:

Rosenquist, Ivan Th. (1949) Notiser: Samarskit - Yttrotantalit ved Bjortjenn i Mykland herred. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 28 (1) 40-43

ⓘ Thorite

Formula: Th(SiO₄)

Description: Found as inclusions in garnet

References:

ⓘ Uraninite

Formula: UO₂

Description: Found as inclusions in garnet

References:

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

Description: Found as inclusions in garnet

References:

ⓘ Yttrotantalite-(Y)

Formula: (Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄

References:

Rosenquist, Ivan Th. (1949) Notiser: Samarskit - Yttrotantalit ved Bjortjenn i Mykland herred. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 28 (1) 40-43

Nilssen, Borghild (1962) Ny lokalitet for yttrotantalitt. Mineralogisk-Geologisk Museum - Universitetet i Oslo- Interne notater, Geologisk Museums venner. 8

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Samarskite-(Y)	4.DB.25	YFe³⁺Nb₂O₈
ⓘ	Yttrotantalite-(Y)	4.DG.10	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄
ⓘ	Uraninite	4.DL.05	UO₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
Group 9 - Silicates
ⓘ	Thorite	9.AD.30	Th(SiO₄)
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Allanite-(Ce)	9.BG.05b	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
Unclassified
ⓘ	'Alkali Feldspar'	-
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Monazite'	-	REE(PO₄)
ⓘ	'Almandine-Spessartine Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄
O	Oxygen
O	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Monazite	REE(PO₄)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Samarskite-(Y)	YFe³⁺Nb₂O₈
O	ⓘ Thorite	Th(SiO₄)
O	ⓘ Uraninite	UO₂
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Na	Sodium
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	Aluminium
Al	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Thorite	Th(SiO₄)
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
P	Phosphorus
P	ⓘ Monazite	REE(PO₄)
P	ⓘ Xenotime-(Y)	Y(PO₄)
S	Sulfur
S	ⓘ Pyrite	FeS₂
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	Iron
Fe	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Samarskite-(Y)	YFe³⁺Nb₂O₈
Fe	ⓘ Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄
Y	Yttrium
Y	ⓘ Samarskite-(Y)	YFe³⁺Nb₂O₈
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Y	ⓘ Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)
Nb	Niobium
Nb	ⓘ Samarskite-(Y)	YFe³⁺Nb₂O₈
Nb	ⓘ Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄
Ce	Cerium
Ce	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Ta	Tantalum
Ta	ⓘ Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄
Th	Thorium
Th	ⓘ Thorite	Th(SiO₄)
U	Uranium
U	ⓘ Uraninite	UO₂
U	ⓘ Yttrotantalite-(Y)	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄

Other Regions, Features and Areas containing this locality

Baltic Shield (Fennoscandian Shield)Shield

Eurasian PlateTectonic Plate

EuropeContinent

Norway

⭔Aust-AgderCounty

ScandinaviaRegion

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References

Rosenqvist, I. Th. (1949): Samarskit-yttrotantalit ved Bjortjenn i Mykland herred. Norsk Geologisk Tidsskrift. 28, 40-43

Butler, J. R. (1958) Rare earths in some niobate-tantalates. Mineralogical Magazine and Journal of the Mineralogical Society, 31 (240). 763-780 doi:10.1180/minmag.1958.031.240.05p.766 - with a partial analysis of the content of REE in samarskite-(Y) from Bjortjenn

Müller, A., Ihlen, P.M., Kronz, A. (2006): Potential resources of quartz and feldspar raw material in Sørland IV: Relationships between quartz, feldspar and mica chemistry and pegmatite type. NGU report 2005.075, 94 pp.

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Bjortjønn (Bjortjenn), Hynnekleiv, Froland, Agder, NorwayiRegional Level TypesBjortjønn (Bjortjenn)Quarry HynnekleivRailway Station FrolandMunicipality AgderCounty NorwayCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Commodity List

Mineral List

Rock Types Recorded

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Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Bjortjønn (Bjortjenn), Hynnekleiv, Froland, Agder, Norway i
Regional Level Types
Bjortjønn (Bjortjenn) Quarry
Hynnekleiv Railway Station
Froland Municipality
Agder County
Norway Country