Locality type:

Volcano

Classification

Species:

Aegirine-augite

Formula:

(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆

Confirmation

Validity:

Believed Valid

Data

Mineral Data:

Click here to view Aegirine-augite data

Locality Data:

Click here to view Tinderet volcano, Nandi County, Kenya

Data Identifiers

Mindat Occurrence Record ID:

1426771

Long-form Identifier:

1:3:1426771:8

GUID (UUID V4):

c05eca16-744b-42de-a783-d88228bac1de

Nearest other occurrences of Aegirine-augite

37.8km (23.5 miles)

ⓘ Eldoret and Kapsabet Plateau, Kenya

46.3km (28.7 miles)

ⓘ Londiani Volcano, Baringo County, Kenya

48.7km (30.2 miles)

ⓘ Molo Volcanic Area, Nakuru County, Kenya

83.3km (51.8 miles)

ⓘ Menengai Volcano, Nakuru County, Kenya

89.0km (55.3 miles)

ⓘ Mau Volcanic Area, Narok County, Kenya

References

Binge, F. W. (1962). Geology of the Kericho Area. Report, Geological Survey of Kenya, 50.

Le Bas, M. J., & Dixon, J. A. (1965). A new carbonatite in the Legetet hills, Kenya. Nature, 207(4992), 68-68. https://link.springer.com/content/pdf/10.1038/207068a0.pdf

Baker, B. H., Williams, L. A. J., Miller, J. A., & Fitch, F. J. (1971). Sequence and geochronology of the Kenya rift volcanics. Tectonophysics, 11(3), 191-215. doi.org/10.1016/0040-1951(71)90030-8

King, B. C., Le Bas, M. J., & Sutherland, D. S. (1972). The history of the alkaline volcanoes and intrusive complexes of eastern Uganda and western Kenya. Journal of the Geological Society, 128(2), 173-205. doi.org/10.1144/gsjgs.128.2.0173

Deans, T., & Roberts, B. (1984). Carbonatite tuffs and lava clasts of the Tinderet foothills, western Kenya: a study of calcified natrocarbonatites. Journal of the Geological Society, 141(3), 563-580. doi.org/10.1144/gsjgs.141.3.0563

Reference Search (possible matching items)

	Simandl, George J., Paradis, Suzanne (2018) Carbonatites: related ore deposits, resources, footprint, and exploration methods. Applied Earth Science, 127 (4) 123-152 doi:10.1080/25726838.2018.1516935	Journal (article/letter/editorial)
	[(Na,K,Cax)2–x(CO3)], known from Ol Doinyo Lengai volcano (Tanzania). A reﬁnement to the IUGS chemical classiﬁcation...Mountain, Kenya (Clarke 4 G. J. SIMANDL AND S. PARADIS and Roberts 1986); Tinderet, Kenya (Deans and...Lengai, Tanzania, which is considered an active volcano). Frequency plots of carbonatites with well-established...documented carbonatite provinces: (a) East Africa (Kenya, Uganda, Tanzania, and one occurrence in Zambia);...by the development of Na- and Kamphiboles, aegirine-augite, K-feldspar, albite, perthite, mesoperthite
	Mikhailova, Julia A., Kalashnikov, Andrey O., Sokharev, Victor A., Pakhomovsky, Yakov A., Konopleva, Nataly G., Yakovenchuk, Victor N., Bazai, Ayya V., Goryainov, Pavel M., Ivanyuk, Gregory Yu. (2016) 3D mineralogical mapping of the Kovdor phoscorite–carbonatite complex (Russia) Mineralium Deposita, 51 (1) 131-149 doi:10.1007/s00126-015-0594-z	Journal (article/letter/editorial)
	The Kovdor massif is a central-type, multiphase volcano– plutonic complex that intruded/erupted through...chalcopyrite). Less common are microcline, albite, aegirine, muscovite, annite, mesolite, barytocalcite, calzirtite...fine-grained rock comprising albite, microcline, aegirine-augite, nepheline, and—sometimes—relict quartz. Minor...chalcopyrite. Leached cavities accommodate hydrothermal aegirine, minerals of the labuntsovite group, epididymite...relation to the Ol Doinyo Lengai, Kerimasi, and Tinderet volcanic carbonatite complexes (Hay 1983; Gittins
	*Heinrich, E. William (1980) The Geology of Carbonatites* - Reprint Edition with Supplementary Material. Robert E. Krieger Publishing Co. Inc.**	Book (edition)
	field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although his final results...1955), L. J. Fick and C. van der Heyde (1959). Kenya: B. H. Baker (1953), G. L. Coetzee and C...country rock around alkalic complexes; up to 25% aegirine-augite, minimum of 52% StOz: Mafic-metasomatites of...rock around alkalic complexes; more than 25% aegirine-augite. Ringite Table 1-2. Nomenclature for Hybrid...Silicates > calcite Kasenite Hollaite Ringite Aegirine sOvite Silicocarbonatite Rocks Silicates 90-100%
	*Clifford, T. N., Gass, I. G. - Eds.* (1970) African Magmatism and Tectonics. Oliver & Boyd, Edinburgh.**	Book
	northern portion in northern Tanzania, western Kenya, and eastern Uganda where the Nyanzian System, composed...through Rhodesia, Mozambique, Malawi, Tanzania and Kenya, and is characterised by ages of 400-700 m.y. (Cahen...rejuvenated antique sequences: the Nyanzian of Kenya (Sanders, 1965); the Bulawayan of Rhodesia (Johnson...and the Mozambique Belt in western Kenya. Bull. geol. Surv. Kenya, 7. ScureIner, G. D. L., and VAN NIgkERK...common, and there are local ferruginous and unusual aegirine- and nepheline-gneisses. In southern Malawi the

Aegirine-augite from Tinderet volcano, Nandi County, Kenya

Aegirine-augite from
Tinderet volcano, Nandi County, Kenya