Eiksunddal eclogite complex within the Western Gneiss Region of Norway.
The eclogite is quartz-bearing, contains very minor kyanite and amphibole, and is characterized by red garnets in a groundmass dominated by green omphacite.
Some UHP eclogite pods on Hareidland show coesite inclusions in zircons.
The mineralist lists also minerals found in connection to surrounding gneises.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

12 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Eclogite

ⓘ Gneiss

ⓘ Pyroxenite

Detailed Mineral List:

ⓘ Calcite

Formula: CaCO₃

References:

Stuart Mills 10 Nov 2002

ⓘ 'Clinopyroxene Subgroup'

Description: jadeite-poor

References:

Mysen, B. O., Heier, K. S. (1972) Petrogenesis of eclogites in high grade metamorphic gneisses, exemplified by the Hareidland eclogite, western Norway. Contributions to Mineralogy and Petrology, 36 (1) 73-94 doi:10.1007/bf00372836

ⓘ Coesite

Formula: SiO₂

References:

Carswell, D. A., Brueckner, H. K., Cuthbert, S. J., Mehta, K., O'Brien, P. J. (2003) The timing of stabilisation and the exhumation rate for ultra-high pressure rocks in the Western Gneiss Region of Norway. Journal of Metamorphic Geology, 21 (6) 601-612 doi:10.1046/j.1525-1314.2003.00467.x

ⓘ Corundum

Formula: Al₂O₃

Description: Occure in sorounding gneisses to the eclogite.

References:

Neumann, Henrich (1985) Norges Mineraler [The Minerals of Norway]. Norges geologiske Undersøkelse Skrifter Vol. 68. Universitetsforlaget

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

References:

ⓘ Kyanite

Formula: Al₂(SiO₄)O

Description: Occure in surrounding gneisses to the eclogite.

References:

Neumann, Henrich (1985) Norges Mineraler [The Minerals of Norway]. Norges geologiske Undersøkelse Skrifter Vol. 68. Universitetsforlaget

ⓘ Omphacite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆

References:

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

References:

Stuart Mills 10 Nov 2002

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

ⓘ Quartz

Formula: SiO₂

References:

ⓘ Rutile

Formula: TiO₂

References:

ⓘ Sapphirine

Formula: Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]

Description: Occure in surrounding gneisses to the eclogite.

References:

Neumann, Henrich (1985) Norges Mineraler [The Minerals of Norway]. Norges geologiske Undersøkelse Skrifter Vol. 68. Universitetsforlaget

ⓘ Sillimanite

Formula: Al₂(SiO₄)O

References:

Jamtveit, Bjørn (1987) Metamorphic evolution of the Eiksunddal eclogite complex. Western Norway, and some tectonic implications. Contributions to Mineralogy and Petrology, 95 (1) 82-99 doi:10.1007/bf00518032

ⓘ Spinel

Formula: MgAl₂O₄

Description: Occure both in the eclogite and in the surrounding gneisses.

References:

ⓘ 'Stilbite Subgroup'

Formula: M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O

References:

Stuart Mills 10 Nov 2002

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Spinel	4.BB.05	MgAl₂O₄
ⓘ	Corundum	4.CB.05	Al₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Coesite	4.DA.35	SiO₂
ⓘ	Rutile	4.DB.05	TiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Sillimanite	9.AF.05	Al₂(SiO₄)O
ⓘ	Kyanite	9.AF.15	Al₂(SiO₄)O
ⓘ	Omphacite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Sapphirine	9.DH.45	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]
ⓘ	Orthoclase	9.FA.30	K(AlSi₃O₈)
Unclassified
ⓘ	'Stilbite Subgroup'	-	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Calcite	CaCO₃
O	ⓘ Coesite	SiO₂
O	ⓘ Corundum	Al₂O₃
O	ⓘ Kyanite	Al₂(SiO₄)O
O	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
O	ⓘ Orthoclase	K(AlSi₃O₈)
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Sapphirine	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]
O	ⓘ Sillimanite	Al₂(SiO₄)O
O	ⓘ Spinel	MgAl₂O₄
O	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
Na	Sodium
Na	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Sapphirine	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]
Mg	ⓘ Spinel	MgAl₂O₄
Al	Aluminium
Al	ⓘ Corundum	Al₂O₃
Al	ⓘ Kyanite	Al₂(SiO₄)O
Al	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Orthoclase	K(AlSi₃O₈)
Al	ⓘ Sapphirine	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]
Al	ⓘ Sillimanite	Al₂(SiO₄)O
Al	ⓘ Spinel	MgAl₂O₄
Al	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Coesite	SiO₂
Si	ⓘ Kyanite	Al₂(SiO₄)O
Si	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Orthoclase	K(AlSi₃O₈)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Sapphirine	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]
Si	ⓘ Sillimanite	Al₂(SiO₄)O
Si	ⓘ Stilbite Subgroup	M_6-7[Al_8-9Si_27-28O₇₂] · nH₂O
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
K	Potassium
K	ⓘ Orthoclase	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Rutile	TiO₂
Fe	Iron
Fe	ⓘ Omphacite	(Na_aCa_bFe_c²⁺Mg_d)(Al_eFe_f³⁺Fe_g²⁺Mg_h)Si₂O₆
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

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References

Mysen, B.O., Heier, Knut S. (1971) A note on the field occurrence of a large eclogite on Hareid, Sunnmøre, Western Norway. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 51 (1) 93-96

Jamtveit, Bjørn (1987) Magmatic and metamorphic controls on chemical variations within the Eiksunddal eclogite complex, Sunnmøre, western Norway. Lithos, 20 (5) 369-389 doi:10.1016/0024-4937(87)90017-x

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