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Bastnäsite from
Gakara Project, Bujumbura Rural Province, Burundi


06711990017362970291512.jpg
Bastnäsite

Gakara Project, Bujumbura Rural Province, Burundi
04732350017272732329550.jpg
Bastnäsite-(Ce), etc.

Gakara Project, Bujumbura Rural Province, Burundi
06711990017362970291512.jpg
Bastnäsite

Gakara Project, Bujumbura Rural Province, Burundi
04732350017272732329550.jpg
Bastnäsite-(Ce), etc.

Gakara Project, Bujumbura Rural Province, Burundi
06711990017362970291512.jpg
Bastnäsite

Gakara Project, Bujumbura Rural Province, Burundi
09647000017272056711580.jpg
Bastnäsite-(Ce), etc.

Gakara Project, Bujumbura Rural Province, Burundi
Locality type:Project
Classification
Species:'Bastnäsite' (not an IMA approved species)
Formula:(Ce/Nd/Y/REE)(CO3)F
Age information
Maximum recorded age:586.8 ± 3.7 Ma
Minimum recorded age:586.8 ± 3.7 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
1586.8 ± 3.7 MaEdiacaran - La-Ba
Sample references:
1 -
Nakai, S., Masuda, A., Lehmann, B. (1988) La-Ba dating of bastnaesite. American Mineralogist, 73 (9-10) 1111-1113
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Rhabdophane Group2
Cerianite-(Ce)2
Data
Mineral Data:Click here to view Bastnäsite data
Locality Data:Click here to view Gakara Project, Bujumbura Rural Province, Burundi
Data Identifiers
Mindat Occurrence Record ID:143711
Long-form Identifier:1:3:143711:9
GUID (UUID V4):0
Localities for Bastnäsite in this Region
Gasagwe deposit, Gakara Project, Bujumbura Rural Province, Burundi
Masenga hill, Gakara Project, Bujumbura Rural Province, Burundi
Nearest other occurrences of Bastnäsite
1.6km (1.0 miles) ⓘMasenga hill, Gakara Project, Bujumbura Rural Province, Burundi
3.3km (2.1 miles) ⓘGasagwe deposit, Gakara Project, Bujumbura Rural Province, Burundi
References
Thoreau, J., Aderca, B. M., & Van Wambeke, L. (1958). Le gisement de terres rares de la Karonge, Urundi. Acad. R. Sci. Outre-Mer, 4, 684-718.
Van Wambeke, L. (1977) The Karonge rare earth deposits, Republic of Burundi: New mineralogical-geochemical data and origin of the mineralization. Mineralium Deposita, 12 (3) 373-380 doi:10.1007/bf00206173
Nakai, S., Masuda, A., Lehmann, B. (1988) La-Ba dating of bastnaesite. American Mineralogist, 73 (9-10) 1111-1113
Lehmann, Bernd, Nakai, Shun'ichi, Höhndorf, Axel, Brinckmann, Jörn, Dulski, Peter, Hein, Ulrich F, Masuda, Akimasa (1994) REE mineralization at Gakara, Burundi: Evidence for anomalous upper mantle in the western Rift Valley. Geochimica et Cosmochimica Acta, 58 (2) 985-992 doi:10.1016/0016-7037(94)90520-7
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.28
Berger, Vladimir I.; Singer, Donald A.; Orris, Greta J. (2009) Carbonatites of the World, Explored Deposits of Nb and REE—Database and Grade and Tonnage Models . Open-File Report 2009-1139. US Geological Survey doi:10.3133/ofr20091139
Harmer, R.E., Nex, P.A.M. (2016) Rare Earth Deposits of Africa. Episodes, 39 (2) 381-406 doi:10.18814/epiiugs/2016/v39i2/95784
Ntiharirizwa, Seconde, Boulvais, Philippe, Poujol, Marc, Branquet, Yannick, Morelli, Cesare, Ntungwanayo, Joël, Midende, Gilbert (2018) Geology and U-Th-Pb Dating of the Gakara REE Deposit, Burundi. Minerals, 8 (9) 394 doi:10.3390/min8090394
 
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