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Asuk, Disko Island, Qeqertalik, Greenland, Denmarki
Regional Level Types
AsukOutcrop
Disko IslandIsland
QeqertalikMunicipality
GreenlandConstituent Country
DenmarkCountry

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Latitude & Longitude (WGS84):
70° 10' 14'' North , 53° 14' 4'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Other Languages:
Greenlandic:
Asuk, Qeqertarsuaq, Qeqertalik, Kalaallit Nunaat, Danmarki


At the northern coast of Qeqertarsuaq Island (Disko Island). Tertiary basalt with plagioclase-spinel-graphite bearing xenoliths occurs here. At this locality Steensrup, in 1872, first discovered and reported small lumps and grains of native iron in basalt. Earlier large boulders of native iron, thought to be meteoric in origin, has been found at Niakornak and Uvifaq.

Unique Ti oxides (likely related to Magnéli phases) were found in black, very fine-grained carbonaceous mudstone xenoliths among the reduced andesite breccia. The size of the xenoliths reaches 12 x l0 x 6 cm. They contain up to 2.3 vol% organic fragments (macerals), mainly vitrinite and inertinite.

Regions containing this locality

North America PlateTectonic Plate
North Atlantic Igneous ProvinceLarge Igneous Province

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: Am Min 51:664-676; Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Anorthite
Formula: Ca(Al2Si2O8)
Reference: Bøggild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3. 445 pages. (p.277)
Anorthite var: Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Bøggild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3. 445 pages. (p.277)
Armalcolite
Formula: (Mg,Fe2+)Ti2O5
Reference: Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Calcite
Formula: CaCO3
Reference: Bøggild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3. 445 pages. (p.121-122)
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Corundum
Formula: Al2O3
Reference: Melson, William G. and George Switzer (1966): Plagioclase-spinel-graphite xenoliths in metallic iron-bearing basalts, Disko Island, Greenland. American Mineralogist. 51: 664-676
Enstatite
Formula: MgSiO3
Description: phenocrysts in an andesitic rock
Reference: Bøggild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3. 445 pages. (p.277),
'Glass'
Reference: Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Graphite
Formula: C
Reference: Am Min 51:664-676; Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Hisingerite
Formula: Fe3+2(Si2O5)(OH)4 · 2H2O
Reference: Bøggild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3. 445 pages. (p.346))
Ilmenite
Formula: Fe2+TiO3
Reference: Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Iron
Formula: Fe
Reference: Am Min 51:664-676; Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Quartz
Formula: SiO2
Reference: Bøggild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3. 445 pages. (p.121-122)
Quartz var: Chalcedony
Formula: SiO2
Reference: Bøggild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3. 445 pages. (p.121-122)
Rutile
Formula: TiO2
Reference: Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
Spinel
Formula: MgAl2O4
Reference: Melson, William G. and George Switzer (1966): Plagioclase-spinel-graphite xenoliths in metallic iron-bearing basalts, Disko Island, Greenland. American Mineralogist. 51: 664-676
Troilite
Formula: FeS
Reference: Pedersen, A.K. (1979) A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology, 69, No. 1, 83-94
'UM1987-04-O:Ti'
Formula: TiO1.71-1.83
Reference: Pedersen, A.K., Rønsbo, J.G. (1987): Oxygen deficient Tioxides (natural Magnéli phases) from mudstone xenoliths with native iron from Disko, central West Greenland. Contrib. Mineral. Petrol.: 96: 35-46; in: Jambor, J.L., Burke, E.A.J. (1990): New mineral Names. American Mineralogist: 75: 1434

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Iron1.AE.05Fe
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Armalcolite4.CB.15(Mg,Fe2+)Ti2O5
Corundum4.CB.05Al2O3
Ilmenite4.CB.05Fe2+TiO3
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Rutile4.DB.05TiO2
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Anorthite9.FA.35Ca(Al2Si2O8)
var: Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Cordierite9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
Enstatite9.DA.05MgSiO3
Hisingerite9.ED.10Fe3+2(Si2O5)(OH)4 · 2H2O
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Glass'-
'UM1987-04-O:Ti'-TiO1.71-1.83

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Spinel7.2.1.1MgAl2O4
AB2X5
Armalcolite7.7.1.2(Mg,Fe2+)Ti2O5
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Hisingerite71.1.5.2Fe3+2(Si2O5)(OH)4 · 2H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
Anorthite-Ca(Al2Si2O8)
var: Labradorite-(Ca,Na)[Al(Al,Si)Si2O8]
'Glass'-
Iron-Fe
Quartz
var: Chalcedony
-SiO2
'UM1987-04-O:Ti'-TiO1.71-1.83

List of minerals for each chemical element

HHydrogen
H HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
CCarbon
C GraphiteC
C CalciteCaCO3
OOxygen
O SpinelMgAl2O4
O CorundumAl2O3
O RutileTiO2
O Armalcolite(Mg,Fe2+)Ti2O5
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O IlmeniteFe2+TiO3
O Quartz (var: Chalcedony)SiO2
O QuartzSiO2
O CalciteCaCO3
O EnstatiteMgSiO3
O Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
O HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
O AnorthiteCa(Al2Si2O8)
O UM1987-04-O:TiTiO1.71-1.83
NaSodium
Na Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
MgMagnesium
Mg SpinelMgAl2O4
Mg Armalcolite(Mg,Fe2+)Ti2O5
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mg EnstatiteMgSiO3
AlAluminium
Al SpinelMgAl2O4
Al CorundumAl2O3
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
Al Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Al AnorthiteCa(Al2Si2O8)
SiSilicon
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si Quartz (var: Chalcedony)SiO2
Si QuartzSiO2
Si EnstatiteMgSiO3
Si Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Si HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Si AnorthiteCa(Al2Si2O8)
SSulfur
S TroiliteFeS
CaCalcium
Ca CalciteCaCO3
Ca Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Ca AnorthiteCa(Al2Si2O8)
TiTitanium
Ti RutileTiO2
Ti Armalcolite(Mg,Fe2+)Ti2O5
Ti IlmeniteFe2+TiO3
Ti UM1987-04-O:TiTiO1.71-1.83
FeIron
Fe IronFe
Fe Armalcolite(Mg,Fe2+)Ti2O5
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)
Fe IlmeniteFe2+TiO3
Fe TroiliteFeS
Fe HisingeriteFe23+(Si2O5)(OH)4 · 2H2O

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

Paleogene - Cretaceous
23.03 - 145 Ma



ID: 640286
Sedimentary; Clastic: shallow marine

Age: Phanerozoic (23.03 - 145 Ma)

Description: Canada Shield, Greenland Shield, and cover, Baffin Bay-Labrador Sea basins, West Greenland volcanic belt

Comments: Oceanic basin; Escher & Pulvertaft, 1995; Hamann et al., 2005; Jepsen, unpublished revisions, 2007-08

Lithology: Sandstone, siltstone, shale; marine fossils

Reference: J.C. Harrison, M.R. St-Onge, O.V. Petrov, S.I. Strelnikov, B.G. Lopatin, F.H. Wilson, S. Tella, D. Paul, T. Lynds, S.P. Shokalsky, C.K. Hults, S. Bergman, H.F. Jepsen, and A. Solli. Geological map of the Arctic. doi:10.4095/287868. Geological Survey of Canada Map 2159A. [2]

Paleocene - Late Cretaceous
56 - 100.5 Ma



ID: 3189625
Mesozoic-Cenozoic sedimentary rocks

Age: Phanerozoic (56 - 100.5 Ma)

Comments: West Greenland Tertiary And Mesozoic Province; Nuussuaq Basin

Lithology: Mudstone-sandstone-siltstone

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Paleocene
56 - 66 Ma



ID: 3136424
Palaeocene tholeiitic

Age: Paleocene (56 - 66 Ma)

Lithology: Tholeiitic basalt

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)
Melson, William G. and George Switzer (1966): Plagioclase-spinel-graphite xenoliths in metallic iron-bearing basalts, Disko Island, Greenland. American Mineralogist. 51: 664-676
Pauly, H. (1969): White cast iron with cohenite, schreibersite, and sulphides from tertiary basalts on Disko, Greenland. Meddelelser fra Dansk Geologisk Forening, 19 (1), 28-26
Pedersen, A.K., Rønsbo, J.G. (1987): Oxygen deficient Tioxides (natural Magnéli phases) from mudstone xenoliths with native iron from Disko, central West Greenland. Contrib. Mineral. Petrol.: 96: 35-46; in: Jambor, J.L., Burke, E.A.J. (1990): New mineral Names. American Mineralogist: 75: 1434
Pedersen, A.K. (1979): A shale buchite xenolith with Al-armalcolite and native iron in a lava from Asuk, Disko, central West Greenland. Contributions to Mineralogy and Petrology. 69 (1), 83-94


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