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Lillebukt Nepheline Mine, Lillebukt Alkaline Complex, Stjernøya Island, Alta, Troms og Finnmark, Norwayi
| Regional Level Types | |
|---|---|
| Lillebukt Nepheline Mine | Mine |
| Lillebukt Alkaline Complex | Complex |
| Stjernøya Island | Island |
| Alta | Municipality |
| Troms og Finnmark | County |
| Norway | Country |
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Latitude & Longitude (WGS84):
70° 16' 25'' North , 22° 35' 27'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Other Languages:
Norwegian:
Lillebukt nefelingruve, Stjernøya, Alta, Troms og Finnmark, Norge
A nepheline syenite deposit being mined (open pit mine) by the North Cap Minerals, owned by Unimin and Franzefoss Bruk (2001). Currently ownership (2018): Sibelco AS.
The mine is under the Mt. Nabbaren on the southern side of Stjernøy island in the northern Norway. It was discovered in 1958. The nepheline syenite forms a lensoid body about 1.7 km x 250 m in dimension.
A part of the Lillebukt Alkaline Complex is a 13 km2 area with carbonatites, nepheline syenites, metagabbro and hornblendite. Along the margin of the carbonatites, apatite-rich hornblende-clinopyroxenite dykes (50-100 cm wide) occur, whose cores include high contents of ilmenite and ilmenomagnetite (up to 20%). The dykes are surrounded by fenites and are believed to represent injections from an olivine melanephelinite magma undergoing fractional crystallisation.
The mine is under the Mt. Nabbaren on the southern side of Stjernøy island in the northern Norway. It was discovered in 1958. The nepheline syenite forms a lensoid body about 1.7 km x 250 m in dimension.
A part of the Lillebukt Alkaline Complex is a 13 km2 area with carbonatites, nepheline syenites, metagabbro and hornblendite. Along the margin of the carbonatites, apatite-rich hornblende-clinopyroxenite dykes (50-100 cm wide) occur, whose cores include high contents of ilmenite and ilmenomagnetite (up to 20%). The dykes are surrounded by fenites and are believed to represent injections from an olivine melanephelinite magma undergoing fractional crystallisation.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
18 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Aegirine Formula: NaFe3+Si2O6 |
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Albite var. Andesine Formula: (Na,Ca)[Al(Si,Al)Si2O8] |
| ⓘ Anorthite Formula: Ca(Al2Si2O8) |
| ⓘ Anorthite var. Labradorite Formula: (Ca,Na)[Al(Al,Si)Si2O8] |
| ⓘ 'Apatite' Formula: Ca5(PO4)3A |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Corundum Formula: Al2O3 |
| ⓘ Diopside Formula: CaMgSi2O6 |
| ⓘ Hastingsite Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2 |
| ⓘ 'Hornblende Root Name Group' Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2 |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ 'K Feldspar' |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Montmorillonite Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O Description: an alteration of nepheline consist of a mixture of montmorillonite and illite |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Description: an alteration of nepheline consist of a mixture of montmorillonite and illite |
| ⓘ Muscovite var. Illite Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2 Description: an alteration of nepheline consist of a mixture of montmorillonite and illite |
| ⓘ Nepheline Formula: Na3K(Al4Si4O16) |
| ⓘ Palygorskite Formula: ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O Description: As mountain leatherlike aggregates together with montmorillonitic clay in fractures cutting the nepheline syenite |
| ⓘ Pargasite Formula: NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| ⓘ Spinel Formula: MgAl2O4 |
| ⓘ Stilpnomelane Formula: K4Fe2+48[Si64Al8]O164(OH)52 · nH2O |
| ⓘ Titanite Formula: CaTiO(SiO4) |
| ⓘ Zircon Formula: Zr(SiO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| ⓘ | Corundum | 4.CB.05 | Al2O3 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Titanite | 9.AG.15 | CaTiO(SiO4) |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Aegirine | 9.DA.25 | NaFe3+Si2O6 |
| ⓘ | Hastingsite | 9.DE.15 | NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2 |
| ⓘ | Pargasite | 9.DE.15 | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| ⓘ | Muscovite var. Illite | 9.EC.15 | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| ⓘ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
| ⓘ | Montmorillonite | 9.EC.40 | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ | Palygorskite | 9.EE.20 | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| ⓘ | Stilpnomelane | 9.EG.40 | K4Fe2+48[Si64Al8]O164(OH)52 · nH2O |
| ⓘ | Nepheline | 9.FA.05 | Na3K(Al4Si4O16) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | var. Andesine | 9.FA.35 | (Na,Ca)[Al(Si,Al)Si2O8] |
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | var. Labradorite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Hornblende Root Name Group' | - | ◻Ca2(C2+4C3+)(AlSi7O22)W2 |
| ⓘ | 'K Feldspar' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3A |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Hastingsite | NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2 |
| H | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| H | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| H | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| H | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Aegirine | NaFe3+Si2O6 |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Corundum | Al2O3 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Hastingsite | NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2 |
| O | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| O | ⓘ Nepheline | Na3K(Al4Si4O16) |
| O | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| O | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| O | ⓘ Titanite | CaTiO(SiO4) |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| O | ⓘ Apatite | Ca5(PO4)3A |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Na | Sodium | |
| Na | ⓘ Aegirine | NaFe3+Si2O6 |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Na | ⓘ Hastingsite | NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2 |
| Na | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Na | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Na | ⓘ Nepheline | Na3K(Al4Si4O16) |
| Na | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Mg | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Mg | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Mg | ⓘ Spinel | MgAl2O4 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Corundum | Al2O3 |
| Al | ⓘ Hastingsite | NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2 |
| Al | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Al | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Al | ⓘ Nepheline | Na3K(Al4Si4O16) |
| Al | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Al | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Al | ⓘ Spinel | MgAl2O4 |
| Al | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Al | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Si | Silicon | |
| Si | ⓘ Aegirine | NaFe3+Si2O6 |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Hastingsite | NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2 |
| Si | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Si | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Si | ⓘ Nepheline | Na3K(Al4Si4O16) |
| Si | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Si | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Si | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Si | ⓘ Titanite | CaTiO(SiO4) |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3A |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Nepheline | Na3K(Al4Si4O16) |
| K | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Ca | Calcium | |
| Ca | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Hastingsite | NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2 |
| Ca | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Ca | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Ca | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Ca | ⓘ Titanite | CaTiO(SiO4) |
| Ca | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Ca | ⓘ Apatite | Ca5(PO4)3A |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Titanite | CaTiO(SiO4) |
| Fe | Iron | |
| Fe | ⓘ Aegirine | NaFe3+Si2O6 |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Hastingsite | NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Stilpnomelane | K4Fe482+[Si64Al8]O164(OH)52 · nH2O |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
Geochronology
Mineralization age: Paleozoic : 539 ± 39 Ma to 402 ± 8 MaImportant 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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | |||||||||||||
| Paleozoic | |||||||||||||
| Devonian | |||||||||||||
| Early/Lower Devonian |
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| Cambrian | |||||||||||||
| Cambrian Series 2 |
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| Terreneuvian |
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Other Databases
| Link to Geological Survey of Norway: | 7028 |
|---|
Other Regions, Features and Areas containing this locality
Eurasian PlateTectonic Plate
- CaledonidesOrogenic Belt
EuropeContinent
Norway
- ⭔FinnmarkCounty
ScandinaviaRegion
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References
Heier, Knut S. (1961) Layered gabbro, hornblendite, carbonatite and nepheline syenite on Stjernøy, North Norway. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 41 (2-3-4). 109-155
Heier, Knut S. (1964) Geochemistry of the nepheline syenite on Stjernøy, North Norway. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 44 (2). 205-215
Salter, Donald L.; Appleyard, Edward C. (1974) An occurrence of vein palygorskite from the nepheline syenite at Lillebugt, Stjernøy, northern Norway. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 54 (4). 329-336
Geis, H. P. (1979) Nepheline syenite on Stjernøy, northern Norway. Economic Geology, 74 (5). 1286-1295 doi:10.2113/gsecongeo.74.5.1286

Lillebukt Nepheline Mine, Lillebukt Alkaline Complex, Stjernøya Island, Alta, Troms og Finnmark, Norway