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Alutu Volcanic Centre, Arsi Zone, Oromia Region, Ethiopiai
Regional Level Types
Alutu Volcanic CentreVolcanic Center
Arsi ZoneZone
Oromia RegionRegion
EthiopiaCountry

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Latitude & Longitude (WGS84):
7° 46' North , 38° 47' East
Latitude & Longitude (decimal):
7.76667,38.78333
GeoHash:
G#: sc7s4tchj
GRN:
N06E27
Type:
Volcanic Center
Köppen climate type:
Cwb : Subtropical highland climate or temperate oceanic climate with dry winters
Mindat Locality ID:
406701
Long-form identifier:
mindat:1:2:406701:9
GUID (UUID V4):
0


Lies immediately south of Lake Zway (Lake Ziway; Lake Zwai), East Shewa Zone, Oromia Region, Ethiopia, cover some 90 km² and rises 650 m above the surrounding lake deposits and tuffs.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 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:

ⓘ Aenigmatite
Formula: Na4[Fe2+10Ti2]O4[Si12O36]
ⓘ 'Alkali Feldspar'
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Augite var. Ferrohedenbergite
Formula: (Ca,Mg,Fe)(Fe,Mg)Si2O6
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Quartz
Formula: SiO2
ⓘ 'Sodic amphibole'

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘvar. Ferrohedenbergite9.DA.15(Ca,Mg,Fe)(Fe,Mg)Si2O6
ⓘAenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
Unclassified
ⓘ'Alkali Feldspar'-
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Sodic amphibole'-

List of minerals for each chemical element

OOxygen
Oⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ QuartzSiO2
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
NaSodium
Naⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
SiSilicon
Siⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ QuartzSiO2
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6
TiTitanium
Tiⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
FeIron
Feⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ Augite var. Ferrohedenbergite(Ca,Mg,Fe)(Fe,Mg)Si2O6

Other Regions, Features and Areas containing this locality

AfricaContinent
African 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, 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

Dakin, G., & Gibson, I. L. (1971). A preliminary account of Alutu, a pantelleritic volcano in the Main Ethiopian Rift. Bull. Geophys. Obs. Addis Ababa, 13, 110-114.
Weaver, S. D., Sceal, J. S. C., & Gibson, I. L. (1972). Trace-element data relevant to the origin of trachytic and pantelleritic lavas in the East African rift system. Contributions to Mineralogy and Petrology, 36(3), 181-194. doi.org/10.1007/BF00371430
Abebe, B., Boccaletti, M., Mazzuoli, R., Bonini, R., Tortorici, M., & TRUA, L. (1998). Geological map of the Lake Ziway-Asela region (Main Ethiopian Rift). 1: 50,000 scale.
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.85
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