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Rare Earths Prospect, Befitina, Antsirabe Commune, Ambanja District, Diana Region (Northern Region), Antsiranana Province, Madagascar

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Latitude & Longitude (WGS84): 13° 50' 3'' South , 48° 7' 58'' East
Latitude & Longitude (decimal): -13.83444,48.13278
GeoHash:G#: mjd1r390x
Locality type:Prospect
Köppen climate type:Am : Tropical monsoon climate
Name(s) in local language(s):,Befitina, Kaominin' Antsirabe, Distrikan' Ambanja, Faritr'i Diana, Faritanin' Antsiranana, Madagasikara
Other/historical names associated with this locality:Ampasindava Peninsula (Saikanosin' Ampasindava)

A REE prospect where REE-bearing argillaceous laterites cover several sq km in a hilly area near the village of Befitina. The laterite reaches a thickness of over 10m and is underlain by Tertiary alkaline syenites. Besides rare earths, the laterite carries high amounts of zirconium (0.5 %), niobium, tantalum, lead, zinc, gallium, hafnium and tin. Due to the intense tropical weathering, new secondary minerals have been formed. Baddeleyite for example has probably been formed by the decomposition of primary eudialyte (?).

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Mineral List

13 valid minerals.

Rock Types Recorded

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Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Early Cretaceous
100.5 - 145 Ma

ID: 3307344

Age: Early Cretaceous (100.5 - 145 Ma)

Lithology: Sedimentary

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

145 - 201.3 Ma

ID: 3189234
Mesozoic sedimentary rocks

Age: Jurassic (145 - 201.3 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on 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 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.


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Rakotovao, S. (2009): Les minéralisations associées aux intrusions alcalines d’Ampasindava. Ph.D. study, University of Antananarivo, 189 pages.
Hatzl, T. (2010): Mineralogische und geochemische Untersuchungen an der Probe TANT2-477067 aus Madagaskar unter besonderer Berücksichtigung der Seltenerdelemente, Zirkon, Hafnium, Yttrium, Niob, Tantal, Thorium und Uran.- Report for Tantalus Rare Earths AG, 56 pages.

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