The Feragen ophiolite crops out over an area of about 15 km2 in Sør-Trøndelag, east- central Norway. It is one of several ultramafic bodies occurring along the southern and eastern margins of the Trondheim Nappe Complex and regarded as typical of “alpine-type” peridotite situated within gneissic Cambrian–Silurian sequences. The ophiolite consists chiefly of harzburgite, dunite, and minor chromitites with various degrees of serpentinization. Limited occurrences of Mg-carbonates (magnesite, nesquehonite) which formed during weathering have been reported along fractures of the Feragen peridotites close to the contact with the country rocks.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

7 valid minerals.

Rock Types Recorded

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Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Chlorite Group'

References:

Qiu, Tian, , , Xiong, Fa-hui, G. Gee, David, Li, Yuan, Yang, Jing-sui, , , , , , , , (2024) Multi-stage formation of the Feragen ophiolite, Norway: Implication from petrology and geochemistry of peridotites and chromitites and its potential for prospecting. China Geology, 7 (4). doi:10.31035/cg2023017

ⓘ 'Chrome-Spinel (of Dana)'

References:

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

ⓘ 'Clinopyroxene Subgroup'

References:

ⓘ Diopside

Formula: CaMgSi₂O₆

References:

ⓘ Enstatite

Formula: Mg₂Si₂O₆

References:

ⓘ Forsterite

Formula: Mg₂(SiO₄)

References:

ⓘ Magnesite

Formula: MgCO₃

References:

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

ⓘ Nesquehonite

Formula: MgCO₃ · 3H₂O

References:

ⓘ 'Olivine Group'

Formula: M₂SiO₄

References:

ⓘ 'Orthopyroxene Subgroup'

References:

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
Group 5 - Nitrates and Carbonates
ⓘ	Magnesite	5.AB.05	MgCO₃
ⓘ	Nesquehonite	5.CA.05	MgCO₃ · 3H₂O
Group 9 - Silicates
ⓘ	Forsterite	9.AC.05	Mg₂(SiO₄)
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Chrome-Spinel (of Dana)'	-
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄
ⓘ	'Olivine Group'	-	M₂SiO₄

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Nesquehonite	MgCO₃ · 3H₂O
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
C	Carbon
C	ⓘ Magnesite	MgCO₃
C	ⓘ Nesquehonite	MgCO₃ · 3H₂O
O	Oxygen
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Forsterite	Mg₂(SiO₄)
O	ⓘ Magnesite	MgCO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Nesquehonite	MgCO₃ · 3H₂O
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
O	ⓘ Olivine Group	M₂SiO₄
Mg	Magnesium
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Mg	ⓘ Forsterite	Mg₂(SiO₄)
Mg	ⓘ Magnesite	MgCO₃
Mg	ⓘ Nesquehonite	MgCO₃ · 3H₂O
Si	Silicon
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Forsterite	Mg₂(SiO₄)
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Si	ⓘ Olivine Group	M₂SiO₄
Ca	Calcium
Ca	ⓘ Diopside	CaMgSi₂O₆
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄

Fossils

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References

[1]Qiu, Tian, , , Xiong, Fa-hui, G. Gee, David, Li, Yuan, Yang, Jing-sui, , , , , , , , (2024) Multi-stage formation of the Feragen ophiolite, Norway: Implication from petrology and geochemistry of peridotites and chromitites and its potential for prospecting. China Geology, 7 (4). doi:10.31035/cg2023017

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Feragen Ophiolite, Røros, Trøndelag, NorwayiRegional Level TypesFeragen OphioliteOphiolite Complex RørosMunicipality TrøndelagCounty NorwayCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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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

Fossils

Other Regions, Features and Areas that Intersect

References

Feragen Ophiolite, Røros, Trøndelag, Norway i
Regional Level Types
Feragen Ophiolite Ophiolite Complex
Røros Municipality
Trøndelag County
Norway Country