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Laouni West intrusion, Laouni, In Guezzam District, In Guezzam Province, Algeriai
Regional Level Types
Laouni West intrusionIntrusion
LaouniGeologic Province
In Guezzam DistrictDistrict
In Guezzam ProvinceProvince
AlgeriaCountry

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Latitude & Longitude (WGS84):
20° 28' North , 5° 34' East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~0km
GRN:
N14E04
Type:
Intrusion
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
68515
Long-form identifier:
mindat:1:2:68515:0
GUID (UUID V4):
0


The Laouni West intrusion forms one of four small intrusive massifs regrouped into the "Pan-African Laouni igneous Complex". The age of the intrusions ranges between 600 and 540 Ma. The ortho-ultrabasic cumulates are cyclic and show a succession of olivine-, chromite-, bronzite- and plagioclase-rich cumulates.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

ⓘ Anorthite
Formula: Ca(Al2Si2O8)
Description: An 60
ⓘ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Description: An 60
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Description: Inclusion in picotite.
ⓘ Aspidolite
Formula: NaMg3(AlSi3O10)(OH)2
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ 'Clinopyroxene Subgroup'
ⓘ Enstatite
Formula: Mg2Si2O6
Description: En 84-91
ⓘ 'Fayalite-Forsterite Series'
ⓘ Forsterite
Formula: Mg2SiO4
ⓘ 'Geikielite-Ilmenite Series'
Description: Ilmenite with up to 10 wt% MgO. Inclusions in intercumulus picotite (subsolidus quenching and exchange with picotite).
ⓘ Hercynite
Formula: Fe2+Al2O4
ⓘ Hercynite var. Picotite
Formula: (Fe,Mg)(Al,Cr)2O4
ⓘ Ilmenite
Formula: Fe2+TiO3
Description: Xenomorpx, rimmed by phlogopite or amphibole. 5-8 wt % MgO. Infiltration of residual Ti-rich liquids in magnesian cumulate.
ⓘ Kaersutite
Formula: NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘ Loveringite
Formula: (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Description: Inclusions in picotite. Up to 8 wt% ZrO2.
ⓘ 'Orthopyroxene Subgroup'
ⓘ Pargasite
Formula: NaCa2(Mg4Al)(Si6Al2)O22(OH)2
Description: Ti-pargasite.
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Phlogopite var. Chromium-bearing Phlogopite
Formula: K(Mg,Cr)3(AlSi3O10)(OH)2
Description: Ti-Cr phlogopite.
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Pseudobrookite
Formula: Fe2TiO5
Description: Mg-rich pseudobrookite inclusions in picotite. Ferri-armalcolite.
ⓘ Rutile
Formula: TiO2
Description: Inclusions in picotite.
ⓘ Zirconolite
Formula: CaZrTi2O7

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘHercynite4.BB.05Fe2+Al2O4
ⓘvar. Picotite4.BB.05(Fe,Mg)(Al,Cr)2O4
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘPseudobrookite4.CB.15Fe2TiO5
ⓘLoveringite4.CC.40(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
ⓘRutile4.DB.05TiO2
ⓘZirconolite4.DH.30CaZrTi2O7
Group 9 - Silicates
ⓘForsterite9.AC.05Mg2SiO4
ⓘEnstatite9.DA.05Mg2Si2O6
ⓘKaersutite9.DE.15NaCa2(Mg3AlTi4+)(Si6Al2)O22O2
ⓘPargasite9.DE.15NaCa2(Mg4Al)(Si6Al2)O22(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘvar. Chromium-bearing Phlogopite9.EC.20K(Mg,Cr)3(AlSi3O10)(OH)2
ⓘAspidolite9.EC.20NaMg3(AlSi3O10)(OH)2
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar. Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Unclassified
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Geikielite-Ilmenite Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Orthopyroxene Subgroup'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ Phlogopite var. Chromium-bearing PhlogopiteK(Mg,Cr)3(AlSi3O10)(OH)2
Hⓘ AspidoliteNaMg3(AlSi3O10)(OH)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
OOxygen
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ EnstatiteMg2Si2O6
Oⓘ ForsteriteMg2SiO4
Oⓘ HercyniteFe2+Al2O4
Oⓘ IlmeniteFe2+TiO3
Oⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Oⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Oⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ PseudobrookiteFe2TiO5
Oⓘ RutileTiO2
Oⓘ ZirconoliteCaZrTi2O7
Oⓘ Fayalite-Forsterite Series
Oⓘ Geikielite-Ilmenite Series
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
Oⓘ Phlogopite var. Chromium-bearing PhlogopiteK(Mg,Cr)3(AlSi3O10)(OH)2
Oⓘ AspidoliteNaMg3(AlSi3O10)(OH)2
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Naⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Naⓘ AspidoliteNaMg3(AlSi3O10)(OH)2
MgMagnesium
Mgⓘ EnstatiteMg2Si2O6
Mgⓘ ForsteriteMg2SiO4
Mgⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Mgⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Mgⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ Fayalite-Forsterite Series
Mgⓘ Geikielite-Ilmenite Series
Mgⓘ Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
Mgⓘ Phlogopite var. Chromium-bearing PhlogopiteK(Mg,Cr)3(AlSi3O10)(OH)2
Mgⓘ AspidoliteNaMg3(AlSi3O10)(OH)2
AlAluminium
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ HercyniteFe2+Al2O4
Alⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Alⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Alⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alⓘ Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
Alⓘ Phlogopite var. Chromium-bearing PhlogopiteK(Mg,Cr)3(AlSi3O10)(OH)2
Alⓘ AspidoliteNaMg3(AlSi3O10)(OH)2
SiSilicon
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ EnstatiteMg2Si2O6
Siⓘ ForsteriteMg2SiO4
Siⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Siⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ Fayalite-Forsterite Series
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Phlogopite var. Chromium-bearing PhlogopiteK(Mg,Cr)3(AlSi3O10)(OH)2
Siⓘ AspidoliteNaMg3(AlSi3O10)(OH)2
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Kⓘ Phlogopite var. Chromium-bearing PhlogopiteK(Mg,Cr)3(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Caⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Caⓘ PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2
Caⓘ ZirconoliteCaZrTi2O7
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2
Tiⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Tiⓘ PseudobrookiteFe2TiO5
Tiⓘ RutileTiO2
Tiⓘ ZirconoliteCaZrTi2O7
Tiⓘ Geikielite-Ilmenite Series
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Crⓘ Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
Crⓘ Phlogopite var. Chromium-bearing PhlogopiteK(Mg,Cr)3(AlSi3O10)(OH)2
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ HercyniteFe2+Al2O4
Feⓘ IlmeniteFe2+TiO3
Feⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Feⓘ PseudobrookiteFe2TiO5
Feⓘ Fayalite-Forsterite Series
Feⓘ Geikielite-Ilmenite Series
Feⓘ Hercynite var. Picotite(Fe,Mg)(Al,Cr)2O4
ZrZirconium
Zrⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
Zrⓘ ZirconoliteCaZrTi2O7
LaLanthanum
Laⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
CeCerium
Ceⓘ Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate
Algeria
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

www.getamap.net (n.d.) http://www.getamap.net/maps/algeria/tamanghasset/_laouni/
www.getamap.net (n.d.) http://www.getamap.net/maps/algeria/tamanghasset/_laouni_oued/
Lorand, J.-P. et al. (1987) Occurrence and petrological significance of Loveringite in the Western Laouni Layered Complex, Southern Hoggar, Algeria. Canadian Mineralogist: 25: 683-693.
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