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Nyeri and Kijabe Volcanic Areas, Nyeri County, Kenyai
Regional Level Types
Nyeri and Kijabe Volcanic AreasVolcanic Complex
Nyeri CountyCounty
KenyaCountry

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Latitude & Longitude (WGS84):
0° 30' South , 36° 45' East
Latitude & Longitude (decimal):
-0.50000,36.75000
GeoHash:
G#: kzfjhkbx3
GRN:
S01E26
Type:
Volcanic Complex
Kรถppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
406962
Long-form identifier:
mindat:1:2:406962:4
GUID (UUID V4):
0


These 2 quarter degree areas (Shackleton 1945; Thompson 1964) encompass the whole of the Aberdare Range, that reaches heights of over 4000 m and lies to the east and parallel with the eastern margin of the East African Rift, which occupies the western part of the area.

Approx coords range: 0ยบ00' - 1ยบ00'S; 36ยบ30' - 37ยบ00'E.

The oldest Simbara series are probably Miocene with overlying volcanic rocks Pleistocene in age (Thompson 1964).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 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

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
โ“˜Aegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
โ“˜Aegirine9.DA.25NaFe3+Si2O6
โ“˜Aenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
โ“˜Nepheline9.FA.05Na3K(Al4Si4O16)
Unclassified
โ“˜'Sodic amphibole'-

List of minerals for each chemical element

OOxygen
Oโ“˜ AegirineNaFe3+Si2O6
Oโ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Oโ“˜ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Oโ“˜ NephelineNa3K(Al4Si4O16)
NaSodium
Naโ“˜ AegirineNaFe3+Si2O6
Naโ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Naโ“˜ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Naโ“˜ NephelineNa3K(Al4Si4O16)
MgMagnesium
Mgโ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
AlAluminium
Alโ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Alโ“˜ NephelineNa3K(Al4Si4O16)
SiSilicon
Siโ“˜ AegirineNaFe3+Si2O6
Siโ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Siโ“˜ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Siโ“˜ NephelineNa3K(Al4Si4O16)
KPotassium
Kโ“˜ NephelineNa3K(Al4Si4O16)
CaCalcium
Caโ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
TiTitanium
Tiโ“˜ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
FeIron
Feโ“˜ AegirineNaFe3+Si2O6
Feโ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Feโ“˜ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]

Other Regions, Features and Areas containing this locality

AfricaContinent
African Plate
Kenya
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, 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

Shackleton, R. M. (1945). Geology of the Nyeri area. Geological Survey of Kenya Report, 12.
Thompson, A. O. (1964). Geology of the Kijabe area. Geol. Surv. Kenya Rept, 67.
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.130
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