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Tirkine Intrusion, Tessalit Cercle, Kidal Region, Malii
Regional Level Types
Tirkine IntrusionIntrusion
Tessalit CercleCercle
Kidal RegionRegion
MaliCountry

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Latitude & Longitude (WGS84):
20° 43' 0'' North , 0° 4' 59'' East
Latitude & Longitude (decimal):
20.71667,0.08333
GRN:
N14E01
Type:
Intrusion
Age:
215 ± 11 Ma
Geologic Time:
Late/Upper Triassic
Dating method:
Rb-Sr
Reference for age:
Liégeois, J. P., Sauvage, J. F., & Black, R. (1991). The Permo-Jurassic alkaline province of Tadhak, Mali: geology, geochronology and tectonic significance. Lithos, 27(2), 95-105. doi.org/10.1016/0024-4937(91)90022-D
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
407607
Long-form identifier:
mindat:1:2:407607:3
GUID (UUID V4):
0


Nepheline syenite intrusion surrounded by sand that obscures outer contacts. It consists of an outer nepheline syenite ring displaying igneous lamination with a central nepheline syenite intrusion with no apparent directional fabric.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


7 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

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Hastingsite
Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘ Kaersutite
Formula: NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ Sodalite
Formula: Na4(Si3Al3)O12Cl
ⓘ Titanite
Formula: CaTi(SiO4)O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘDiopside9.DA.15CaMgSi2O6
ⓘHastingsite9.DE.15NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
ⓘKaersutite9.DE.15NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘSodalite9.FB.10Na4(Si3Al3)O12Cl
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ DiopsideCaMgSi2O6
Oⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Oⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ SodaliteNa4(Si3Al3)O12Cl
Oⓘ TitaniteCaTi(SiO4)O
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Naⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ SodaliteNa4(Si3Al3)O12Cl
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Alⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ SodaliteNa4(Si3Al3)O12Cl
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ DiopsideCaMgSi2O6
Siⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Siⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ SodaliteNa4(Si3Al3)O12Cl
Siⓘ TitaniteCaTi(SiO4)O
ClChlorine
Clⓘ SodaliteNa4(Si3Al3)O12Cl
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ DiopsideCaMgSi2O6
Caⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Caⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Caⓘ TitaniteCaTi(SiO4)O
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate
North Africa
West AfricaUN Subregion

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Liégeois, J. P., Sauvage, J. F., & Black, R. (1991). The Permo-Jurassic alkaline province of Tadhak, Mali: geology, geochronology and tectonic significance. Lithos, 27(2), 95-105. doi.org/10.1016/0024-4937(91)90022-D
Woolley, A. R. (2001) Alkaline Rocks and Carbonatites of the World, Part 3: Africa - Alkaline Rocks and Carbonatites of the World. The Geological Society of London.p.178
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