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Orthopyroxenite outcrop, Laouni, Ahaggar Mtn (Hoggar Mtn), Tamanghasset Province, Algeriai
Regional Level Types
Orthopyroxenite outcropOutcrop
Laouni- not defined -
Ahaggar Mtn (Hoggar Mtn)Mountain
Tamanghasset ProvinceProvince
AlgeriaCountry

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 20° 28' North , 5° 34' East (est.)
Margin of Error:~0km
Locality type:Outcrop
Köppen climate type:BWh : Hot deserts climate


Orthopyroxene- and cordierite-bearing granulitic rocks.

The crystallization of orthoamphibole-garnet, and at a later stage, of chlorite, is due to retrogression with hydration at 650-700ºC/3kb. This regional hydration is related to the release of fluids during the crystallization of the Pan-African granitic and mafic magmas of the Laouni area.

Regions containing this locality

African PlateTectonic Plate
Sahara Desert, North AfricaDesert
Northwest Africa MeteoritesMeteorite Fall Location

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


1 valid mineral.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: C. Lemanski, Jr. (re-entry lost Mindat data).
'Chlorite Group'
Reference: C. Lemanski, Jr. (re-entry lost Mindat data).
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: C. Lemanski, Jr. (re-entry lost Mindat data).
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: C. Lemanski, Jr. (re-entry lost Mindat data).
'Orthopyroxene Subgroup'
Reference: C. Lemanski, Jr. (re-entry lost Mindat data).

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Cordierite9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Orthopyroxene Subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with Al substituted rings
Cordierite61.2.1.1(Mg,Fe)2Al3(AlSi5O18)
Unclassified Minerals, Mixtures, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Orthopyroxene Subgroup'-

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
OOxygen
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O Garnet GroupX3Z2(SiO4)3
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
MgMagnesium
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
AlAluminium
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
SiSilicon
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si Garnet GroupX3Z2(SiO4)3
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
TiTitanium
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)

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