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Kufra Intrusions, Kufra District, Libyai
Regional Level Types
Kufra IntrusionsGroup of Intrusions
Kufra DistrictDistrict
LibyaCountry

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Latitude & Longitude (WGS84):
22° 15' North , 23° 40' East
Latitude & Longitude (decimal):
22.25000,23.66667
GeoHash:
G#: sebydd3x9
GRN:
N15E16
Type:
Group of Intrusions
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
407210
Long-form identifier:
mindat:1:2:407210:5
GUID (UUID V4):
0


80 km west of Jebel Arkenu, Kufra District, Libya 2 circular intrusions of carbonatitic rocks dome gently dipping Cretaceous sandstones and siltstones. The 2 intrusions are some 5 km apart and both are about 3 km in diameter but dome the associated sediments over 9-10 km.

Select Mineral List Type

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

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
References:
Conticelli, S., Manetti, P., Capaldi, G. & Poli, G. 1995. Petrology, mineralogy and isotopes in olivine mela-nephelinites, basanites and carbonatites from Uwaynat region, south east Libya: inferences on their genesis. Africa Geoscience Review, 2, 227-245.
Hunting Geology and Geophysics Limited 1974. Geology of the Jabal Al Uwaynat area, Libyan Arab Republic. Report to Industrial Research Centre, Department of Geological Research and Mining, Tripoli. Boreham Wood, U.K. (unpublished).
Conticelli, S., Manetti, P., Capaldi, G. & Poli, G. 1995. Petrology, mineralogy and isotopes in olivine mela-nephelinites, basanites and carbonatites from Uwaynat region, south east Libya: inferences on their genesis. Africa Geoscience Review, 2, 227-245.
Hunting Geology and Geophysics Limited 1974. Geology of the Jabal Al Uwaynat area, Libyan Arab Republic. Report to Industrial Research Centre, Department of Geological Research and Mining, Tripoli. Boreham Wood, U.K. (unpublished).
ⓘ Calcite
Formula: CaCO3
References:
Conticelli, S., Manetti, P., Capaldi, G. & Poli, G. 1995. Petrology, mineralogy and isotopes in olivine mela-nephelinites, basanites and carbonatites from Uwaynat region, south east Libya: inferences on their genesis. Africa Geoscience Review, 2, 227-245.
Hunting Geology and Geophysics Limited 1974. Geology of the Jabal Al Uwaynat area, Libyan Arab Republic. Report to Industrial Research Centre, Department of Geological Research and Mining, Tripoli. Boreham Wood, U.K. (unpublished).
Conticelli, S., Manetti, P., Capaldi, G. & Poli, G. 1995. Petrology, mineralogy and isotopes in olivine mela-nephelinites, basanites and carbonatites from Uwaynat region, south east Libya: inferences on their genesis. Africa Geoscience Review, 2, 227-245.
Hunting Geology and Geophysics Limited 1974. Geology of the Jabal Al Uwaynat area, Libyan Arab Republic. Report to Industrial Research Centre, Department of Geological Research and Mining, Tripoli. Boreham Wood, U.K. (unpublished).
ⓘ 'Fayalite-Forsterite Series'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Mica Group'
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ Perovskite
Formula: CaTiO3
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ 'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Siderite
Formula: FeCO3
References:
Conticelli, S., Manetti, P., Capaldi, G. & Poli, G. 1995. Petrology, mineralogy and isotopes in olivine mela-nephelinites, basanites and carbonatites from Uwaynat region, south east Libya: inferences on their genesis. Africa Geoscience Review, 2, 227-245.
Hunting Geology and Geophysics Limited 1974. Geology of the Jabal Al Uwaynat area, Libyan Arab Republic. Report to Industrial Research Centre, Department of Geological Research and Mining, Tripoli. Boreham Wood, U.K. (unpublished).
Conticelli, S., Manetti, P., Capaldi, G. & Poli, G. 1995. Petrology, mineralogy and isotopes in olivine mela-nephelinites, basanites and carbonatites from Uwaynat region, south east Libya: inferences on their genesis. Africa Geoscience Review, 2, 227-245.
Hunting Geology and Geophysics Limited 1974. Geology of the Jabal Al Uwaynat area, Libyan Arab Republic. Report to Industrial Research Centre, Department of Geological Research and Mining, Tripoli. Boreham Wood, U.K. (unpublished).
ⓘ Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘPerovskite4.CC.30CaTiO3
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Group 9 - Silicates
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘVermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Mica Group'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Hⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
Cⓘ SideriteFeCO3
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ CalciteCaCO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ PerovskiteCaTiO3
Oⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Oⓘ SideriteFeCO3
Oⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Oⓘ Fayalite-Forsterite Series
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Siⓘ Fayalite-Forsterite Series
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
Caⓘ PerovskiteCaTiO3
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ PerovskiteCaTiO3
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ SideriteFeCO3
Feⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Feⓘ Fayalite-Forsterite Series
NbNiobium
Nbⓘ Pyrochlore GroupA2Nb2(O,OH)6Z

Geochronology

Mineralization age: Oligocene : 28.2 Ma to 27.1 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 TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Oligocene
ⓘ Nephelinite27.1 Ma
ⓘ Basanite28.2 Ma

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate
North Africa

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

Conticelli, S., Manetti, P., Capaldi, G. & Poli, G. 1995. Petrology, mineralogy and isotopes in olivine mela-nephelinites, basanites and carbonatites from Uwaynat region, south east Libya: inferences on their genesis. Africa Geoscience Review, 2, 227-245.
Hunting Geology and Geophysics Limited 1974. Geology of the Jabal Al Uwaynat area, Libyan Arab Republic. Report to Industrial Research Centre, Department of Geological Research and Mining, Tripoli. Boreham Wood, U.K. (unpublished).
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.145
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