|Latitude & Longitude (WGS84):||13° 50' 3'' South , 48° 7' 58'' East|
|Latitude & Longitude (decimal):||-13.83444,48.13278|
|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 ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
13 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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 Macrostrat.org
100.5 - 145 Ma
145 - 201.3 Ma
|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.