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Sunde bridge, Snaresund, Tvedestrand, Aust-Agder, Norway

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Latitude & Longitude (WGS84): 58° 35' 35'' North , 9° 0' 15'' East
Latitude & Longitude (decimal): 58.59298,9.00412
GeoHash:G#: u4qmkfs8g
Locality type:Bridge
Köppen climate type:Cfb : Temperate oceanic climate


A lens 40 cm in length of a sapphirine bearing rock that outcrops within a layered sequence of acid to intermediate gneisses, quartzites and metabasites (Visser et al. 1992)

Regions containing this locality

Scandinavia

Region - 2,024 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: Visser, D., Thijissen, P.H.M. & Schumacher J.C.(1992) Högbomite in sapphirine-bearing rocks from the Bamble Sector, south Norway. Mineralogical Magazine 56: 343-351
'Biotite'
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geologisk Tidsskrift 51, 170-175
'Chlorite Group'
Reference: Visser, D., Thijissen, P.H.M. & Schumacher J.C.(1992) Högbomite in sapphirine-bearing rocks from the Bamble Sector, south Norway. Mineralogical Magazine 56: 343-351
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geologisk Tidsskrift 51, 170-175
Corundum
Formula: Al2O3
Reference: Visser, D., Thijissen, P.H.M. & Schumacher J.C.(1992) Högbomite in sapphirine-bearing rocks from the Bamble Sector, south Norway. Mineralogical Magazine 56: 343-351
Enstatite
Formula: MgSiO3
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geologisk Tidsskrift 51, 170-175
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Visser, D., Thijissen, P.H.M. & Schumacher J.C.(1992) Högbomite in sapphirine-bearing rocks from the Bamble Sector, south Norway. Mineralogical Magazine 56: 343-351
Gedrite
Formula: ☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geologisk Tidsskrift 51, 170-175
Hercynite
Formula: Fe2+Al2O4
Description: as inclusions in sapphirine
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geolgisk Tidsskrift 51, 170-175
'Högbomite'
Formula: (Mg,Fe)2(Al,Ti)5O10
Reference: Visser, D., Thijissen, P.H.M. & Schumacher J.C.(1992) Högbomite in sapphirine-bearing rocks from the Bamble Sector, south Norway. Mineralogical Magazine 56: 343-351
Ilmenite
Formula: Fe2+TiO3
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geolgisk Tidsskrift 51, 170-175
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Visser, D., Thijissen, P.H.M. & Schumacher J.C.(1992) Högbomite in sapphirine-bearing rocks from the Bamble Sector, south Norway. Mineralogical Magazine 56: 343-351
'Orthopyroxene Subgroup'
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geologisk Tidsskrift 51, 170-175
Rutile
Formula: TiO2
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geolgisk Tidsskrift 51, 170-175
Sapphirine
Formula: Mg4(Mg3Al9)O4[Si3Al9O36]
Habit: small corroded millmetric sized crystals
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geologisk Tidsskrift 51, 170-175
Spinel
Formula: MgAl2O4
Reference: Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geolgisk Tidsskrift 51, 170-175

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Corundum'4.CB.05Al2O3
'Hercynite'4.BB.05Fe2+Al2O4
'Ilmenite'4.CB.05Fe2+TiO3
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Rutile'4.DB.05TiO2
'Spinel'4.BB.05MgAl2O4
Group 9 - Silicates
'Cordierite'9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
'Enstatite'9.DA.05MgSiO3
'Gedrite'9.DD.05☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
'Sapphirine'9.DH.45Mg4(Mg3Al9)O4[Si3Al9O36]
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Biotite'-
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Högbomite'-(Mg,Fe)2(Al,Ti)5O10
'Orthopyroxene Subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Hercynite7.2.1.3Fe2+Al2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Miscellaneous
'Högbomite'7.11.7.3(Mg,Fe)2(Al,Ti)5O10
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with Al substituted rings
Cordierite61.2.1.1(Mg,Fe)2Al3(AlSi5O18)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Enstatite65.1.2.1MgSiO3
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Gedrite66.1.2.5☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with P>2
Sapphirine69.2.1b.1Mg4(Mg3Al9)O4[Si3Al9O36]
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Biotite'-
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Orthopyroxene Subgroup'-

List of minerals for each chemical element

HHydrogen
H Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
OOxygen
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O CorundumAl2O3
O EnstatiteMgSiO3
O Garnet GroupX3Z2(SiO4)3
O Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
O HercyniteFe2+Al2O4
O Högbomite(Mg,Fe)2(Al,Ti)5O10
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O RutileTiO2
O SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
O SpinelMgAl2O4
MgMagnesium
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mg EnstatiteMgSiO3
Mg Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Mg Högbomite(Mg,Fe)2(Al,Ti)5O10
Mg SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Mg SpinelMgAl2O4
AlAluminium
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
Al CorundumAl2O3
Al Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Al HercyniteFe2+Al2O4
Al Högbomite(Mg,Fe)2(Al,Ti)5O10
Al SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Al SpinelMgAl2O4
SiSilicon
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si EnstatiteMgSiO3
Si Garnet GroupX3Z2(SiO4)3
Si Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Si SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
TiTitanium
Ti Högbomite(Mg,Fe)2(Al,Ti)5O10
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
FeIron
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)
Fe HercyniteFe2+Al2O4
Fe Högbomite(Mg,Fe)2(Al,Ti)5O10
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Mesoproterozoic
1000 - 1600 Ma



ID: 3131169
Proterozoic II gneiss

Age: Mesoproterozoic (1000 - 1600 Ma)

Description: undifferentiated metamorphic

Lithology: Gneiss

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Touret, J. & De La Roche, H. (1971): Contribution to the mineralogy of Norway , No. 45. Saphirine à Snaresund, prés de Tvedestrand (Norvége Méridionale). Norsk Geologisk Tidsskrift 51, 170-175
Visser, D., Thijissen, P.H.M. & Schumacher J.C. (1992) Högbomite in sapphirine-bearing rocks from the Bamble Sector, south Norway. Mineralogical Magazine 56: 343-351

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