Nephelinites have been dredged from the continental shelf c. 60 km NW of Kristiansund (Bugge et al. 1980). 5 peaks penetrate the sedimentary cover in the area and nephelinites were obtained from 2 of them.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

8 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

ⓘ Basanite

ⓘ Nephelinite

ⓘ 'Olivine nephelinite'

Detailed Mineral List:

ⓘ Analcime

Formula: Na(AlSi₂O₆) · H₂O

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃(Cl/F/OH)

Reference: Bugge, T., Prestvik, T., & Rokoengen, K. (1980). Lower tertiary volcanic rocks off Kristiansund—mid Norway. Marine Geology, 35(4), 277-286. Prestvik, T., Torske, T., Sundvoll, B., & Karlsson, H. (1999). Petrology of early Tertiary nephelinites off mid-Norway. Additional evidence for an enriched endmember of the ancestral Iceland plume. Lithos, 46(2), 317-330.; Bugge, T., Prestvik, T., & Rokoengen, K. (1980). Lower tertiary volcanic rocks off Kristiansund—mid Norway. Marine Geology, 35(4), 277-286. Prestvik, T., Torske, T., Sundvoll, B., & Karlsson, H. (1999). Petrology of early Tertiary nephelinites off mid-Norway. Additional evidence for an enriched endmember of the ancestral Iceland plume. Lithos, 46(2), 317-330.

ⓘ Calcite

Formula: CaCO₃

ⓘ 'Chlorite Group'

ⓘ 'Clinopyroxene Subgroup'

ⓘ Diopside

Formula: CaMgSi₂O₆

ⓘ 'Fayalite-Forsterite Series'

ⓘ Larnite

Formula: Ca₂SiO₄

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

ⓘ 'Melilite Group'

Formula: Ca₂M(XSiO₇)

ⓘ 'Mica Group'

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

ⓘ Perovskite

Formula: CaTiO₃

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

ⓘ Rhönite

Formula: Ca₄[Mg₈Fe³⁺₂Ti₂]O₄[Si₆Al₆O₃₆]

ⓘ 'Zeolite Group'

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Perovskite	4.CC.30	CaTiO₃
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 9 - Silicates
ⓘ	Analcime	9.GB.05	Na(AlSi₂O₆) · H₂O
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Larnite	9.AD.05	Ca₂SiO₄
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
ⓘ	Rhönite	9.DH.40	Ca₄[Mg₈Fe³⁺₂Ti₂]O₄[Si₆Al₆O₃₆]
ⓘ	'Zeolite Group'	9.G0.
Unclassified Minerals, Rocks, etc.
ⓘ	'Apatite'	-	Ca₅(PO₄)₃(Cl/F/OH)
ⓘ	'Chlorite Group'	-
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Melilite Group'	-	Ca₂M(XSiO₇)
ⓘ	'Mica Group'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Pyroxene Group'	-	ADSi₂O₆

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
H	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
O	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
O	ⓘ Calcite	CaCO₃
O	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
O	ⓘ Perovskite	CaTiO₃
O	ⓘ Rhönite	Ca₄[Mg₈Fe₂³⁺Ti₂]O₄[Si₆Al₆O₃₆]
O	ⓘ Larnite	Ca₂SiO₄
O	ⓘ Melilite Group	Ca₂M(XSiO₇)
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
F	Fluorine
F	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Na	Sodium
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Rhönite	Ca₄[Mg₈Fe₂³⁺Ti₂]O₄[Si₆Al₆O₃₆]
Al	Aluminium
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Al	ⓘ Rhönite	Ca₄[Mg₈Fe₂³⁺Ti₂]O₄[Si₆Al₆O₃₆]
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Analcime	Na(AlSi₂O₆) · H₂O
Si	ⓘ Rhönite	Ca₄[Mg₈Fe₂³⁺Ti₂]O₄[Si₆Al₆O₃₆]
Si	ⓘ Larnite	Ca₂SiO₄
Si	ⓘ Melilite Group	Ca₂M(XSiO₇)
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
P	Phosphorus
P	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Cl	Chlorine
Cl	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
K	Potassium
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Ca	Calcium
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Perovskite	CaTiO₃
Ca	ⓘ Rhönite	Ca₄[Mg₈Fe₂³⁺Ti₂]O₄[Si₆Al₆O₃₆]
Ca	ⓘ Larnite	Ca₂SiO₄
Ca	ⓘ Melilite Group	Ca₂M(XSiO₇)
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Perovskite	CaTiO₃
Ti	ⓘ Rhönite	Ca₄[Mg₈Fe₂³⁺Ti₂]O₄[Si₆Al₆O₃₆]
Fe	Iron
Fe	ⓘ Rhönite	Ca₄[Mg₈Fe₂³⁺Ti₂]O₄[Si₆Al₆O₃₆]
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄

Geochronology

Mineralization age: Eocene : 54.4 ± 0.9 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

ⓘ Olivine nephelinite

54.4 ± 0.9 Ma

References

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

Woolley, A. R. (2019, September). Alkaline Rocks and Carbonatites of the World, Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. Geological Society of London, p. 403

Bugge, T., Prestvik, T., & Rokoengen, K. (1980). Lower tertiary volcanic rocks off Kristiansund—mid Norway. Marine Geology, 35(4), 277-286.

Prestvik, T., Torske, T., Sundvoll, B., & Karlsson, H. (1999). Petrology of early Tertiary nephelinites off mid-Norway. Additional evidence for an enriched endmember of the ancestral Iceland plume. Lithos, 46(2), 317-330.

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate

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