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Michese Intrusion, Phalombe, Southern Region, Malawii
Regional Level Types
Michese IntrusionIntrusion
PhalombeDistrict
Southern RegionRegion
MalawiCountry

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Latitude & Longitude (WGS84):
15° 48' South , 35° 42' East
Latitude & Longitude (decimal):
-15.80000,35.70000
GeoHash:
G#:kv1qh7eyq
GRN:
S11E25
Type:
Intrusion
Köppen climate type:
Cwa : Monsoon-influenced humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Phalombe2,663(2011)5.3km
Mulanje16,483(2011)33.5km
Luchenza11,939(2012)47.7km
Zomba80,932(2011)61.5km
Mindat Locality ID:
407547
Long-form identifier:
mindat:1:2:407547:2
GUID (UUID V4):
0


Almost perfectly circular intrusion 8 km in diameter that forms a spectacular, shear conical peak rising to some 1700 m above the plain.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Mineral List


6 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 ListTree Diagram

Detailed Mineral List:

ⓘAegirine
Formula:NaFe3+Si2O6
ⓘAenigmatite
Formula:Na4[Fe2+10Ti2]O4[Si12O36]
ⓘ'Amphibole Supergroup'
Formula:AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘArfvedsonite
Formula:[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
ⓘ'Biotite'
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Fayalite-Forsterite Series'
ⓘ'Feldspar Group'
ⓘ'Feldspar Group var. Perthite'
ⓘFluorite
Formula:CaF2
ⓘ'Pyrochlore Group'
Formula:A2Nb2(O,OH)6Z
ⓘQuartz
Formula:SiO2
ⓘRiebeckite
Formula:◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘ'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘArfvedsonite9.DE.25[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
ⓘRiebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘAenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Feldspar Group'-
ⓘ'var. Perthite'-
ⓘ'Fayalite-Forsterite Series'-

List of minerals for each chemical element

HHydrogen
HⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
HⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
HⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
HⓘPyrochlore GroupA2Nb2(O,OH)6Z
HⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
OOxygen
OⓘAegirineNaFe3+Si2O6
OⓘAenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
OⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
OⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
OⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OⓘPyrochlore GroupA2Nb2(O,OH)6Z
OⓘQuartzSiO2
OⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
OⓘFayalite-Forsterite Series
FFluorine
FⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FⓘFluoriteCaF2
NaSodium
NaⓘAegirineNaFe3+Si2O6
NaⓘAenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
NaⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
NaⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
MgⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgⓘFayalite-Forsterite Series
AlAluminium
AlⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
AlⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiSilicon
SiⓘAegirineNaFe3+Si2O6
SiⓘAenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
SiⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SiⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
SiⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiⓘQuartzSiO2
SiⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
SiⓘFayalite-Forsterite Series
ClChlorine
ClⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
KⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CaCalcium
CaⓘFluoriteCaF2
TiTitanium
TiⓘAenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
TiⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
TiⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
FeⓘAegirineNaFe3+Si2O6
FeⓘAenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
FeⓘArfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
FeⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeⓘRiebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
FeⓘFayalite-Forsterite Series
NbNiobium
NbⓘPyrochlore GroupA2Nb2(O,OH)6Z

Other Regions, Features and Areas containing this locality

AfricaContinent
African Plate
Somali PlateTectonic Plate

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, pleaseregister so you can add to our database. This locality information is for reference purposes only. You should never attempt tovisit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holdersfor access and that you are aware of all safety precautions necessary.

References

Garson, M. S., & Walshaw, R. D. (1969). The geology of the Mlanje area. Bulletin, Geological Survey of Malawi, 21.
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.173
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