Laouni West intrusion, Laouni, In Guezzam District, In Guezzam Province, Algeriai
| Regional Level Types | |
|---|---|
| Laouni West intrusion | Intrusion |
| Laouni | - not defined - |
| In Guezzam District | District |
| In Guezzam Province | Province |
| Algeria | Country |
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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
Type:
Köppen climate type:
Mindat Locality ID:
68515
Long-form identifier:
mindat:1:2:68515:0
GUID (UUID V4):
e2d28549-70a7-45f3-b0f6-ecd2a12d1798
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 ElementsDetailed 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 References: |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 References: |
| ⓘ 'Clinopyroxene Subgroup' |
| ⓘ Enstatite Formula: Mg2Si2O6 Description: En 84-91 |
| ⓘ 'Fayalite-Forsterite Series' References: |
| ⓘ 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' References: |
| ⓘ 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 References: |
| ⓘ Pseudobrookite Formula: Fe2TiO5 Description: Mg-rich pseudobrookite inclusions in picotite.
Ferri-armalcolite. |
| ⓘ Rutile Formula: TiO2 Description: Inclusions in picotite. |
| ⓘ Zirconolite Formula: CaZrTi2O7 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Hercynite var. Picotite | 4.BB.05 | (Fe,Mg)(Al,Cr)2O4 |
| ⓘ | 4.BB.05 | Fe2+Al2O4 | |
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| ⓘ | Pseudobrookite | 4.CB.15 | Fe2TiO5 |
| ⓘ | Loveringite | 4.CC.40 | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| ⓘ | Zirconolite | 4.DH.30 | CaZrTi2O7 |
| Group 9 - Silicates | |||
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
| ⓘ | Kaersutite | 9.DE.15 | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| ⓘ | Pargasite | 9.DE.15 | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| ⓘ | Aspidolite | 9.EC.20 | NaMg3(AlSi3O10)(OH)2 |
| ⓘ | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| ⓘ | var. Chromium-bearing Phlogopite | 9.EC.20 | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | var. Labradorite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
| Unclassified | |||
| ⓘ | 'Geikielite-Ilmenite Series' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
| ⓘ | 'Clinopyroxene Subgroup' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| H | ⓘ Phlogopite var. Chromium-bearing Phlogopite | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| H | ⓘ Aspidolite | NaMg3(AlSi3O10)(OH)2 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| O | Oxygen | |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Enstatite | Mg2Si2O6 |
| O | ⓘ Forsterite | Mg2SiO4 |
| O | ⓘ Hercynite | Fe2+Al2O4 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Kaersutite | NaCa2(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 | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | ⓘ Pseudobrookite | Fe2TiO5 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Zirconolite | CaZrTi2O7 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Hercynite var. Picotite | (Fe,Mg)(Al,Cr)2O4 |
| O | ⓘ Phlogopite var. Chromium-bearing Phlogopite | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| O | ⓘ Aspidolite | NaMg3(AlSi3O10)(OH)2 |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | Fluorine | |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Na | Sodium | |
| Na | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Na | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Na | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | ⓘ Aspidolite | NaMg3(AlSi3O10)(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Enstatite | Mg2Si2O6 |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Mg | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Mg | ⓘ Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| Mg | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | ⓘ Hercynite var. Picotite | (Fe,Mg)(Al,Cr)2O4 |
| Mg | ⓘ Phlogopite var. Chromium-bearing Phlogopite | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| Mg | ⓘ Aspidolite | NaMg3(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Hercynite | Fe2+Al2O4 |
| Al | ⓘ Kaersutite | NaCa2(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 | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Al | ⓘ Phlogopite | KMg3(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 Phlogopite | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| Al | ⓘ Aspidolite | NaMg3(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Enstatite | Mg2Si2O6 |
| Si | ⓘ Forsterite | Mg2SiO4 |
| Si | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Si | ⓘ Anorthite var. Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Phlogopite var. Chromium-bearing Phlogopite | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| Si | ⓘ Aspidolite | NaMg3(AlSi3O10)(OH)2 |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Cl | Chlorine | |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| K | ⓘ Phlogopite var. Chromium-bearing Phlogopite | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Kaersutite | NaCa2(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 | ⓘ Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| Ca | ⓘ Zirconolite | CaZrTi2O7 |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Ti | ⓘ Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| Ti | ⓘ Pseudobrookite | Fe2TiO5 |
| Ti | ⓘ Rutile | TiO2 |
| Ti | ⓘ Zirconolite | CaZrTi2O7 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+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 Phlogopite | K(Mg,Cr)3(AlSi3O10)(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Hercynite | Fe2+Al2O4 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| Fe | ⓘ Pseudobrookite | Fe2TiO5 |
| Fe | ⓘ Hercynite var. Picotite | (Fe,Mg)(Al,Cr)2O4 |
| Zr | Zirconium | |
| Zr | ⓘ Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| Zr | ⓘ Zirconolite | CaZrTi2O7 |
| La | Lanthanum | |
| La | ⓘ Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| Ce | Cerium | |
| Ce | ⓘ Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
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References
