Ruri Complex (Record #138) rare-earth element deposit in Kenya

Carbonatite with residual enrichment rare earth element deposit in , Kenya

Idman, Hannu, and Mulaha, T.O., 1991, Assessment of phosphate and niobium in carbonatitc and alkaline silicate complexes of South Nyanza, Kenya:

Deposit type	Carbonatite with residual enrichment
Age of deposit	4.1-11 Ma
REE minerals	monazite bastnäsite eudidymite
Ore minerals	magnetite apatite pyrochlore fluorite barite götzenite
Gangue minerals	biotite aegirine wollastonite cancrinite
Host rock types	carbonatite carbonatite agglomerate nepheline syenite phonolite plugs

Geologic map unit	34.333333333333, -0.53333333333333
Other databases	Find additional scientific data near this location

Status	Potential resource
Resource estimates	0.375 Mt @ 6.4% mon or 3.5% REO (1989)

Complex of twin, deeply eroded, carbonatitic volcanoes.

de Kun, N., 1987, Mineral economics of Africa: New York, Elsevier, Developments in Economic Geology 22, p. 241-243.
Idman, Hannu, and Mulaha, T.O., 1991, Assessment of phosphate and niobium in carbonatitc and alkaline silicate complexes of South Nyanza, Kenya:
Möller, P., 1989a, Rare earth mineral deposits and their industrial importance, in
Woolley, A.R., 2001, Alkaline rocks and carbonatites of the world-- Part 3: Africa: London, The Geological Society, 372 p.
Jackson, W.D., and Christiansen, Grey, 1993, International strategic minerals inventory summary report-- Rare-earth oxides: U.S. Geological Survey Circular 930-N, 68 p.