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Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon

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Latitude & Longitude (WGS84): 1° 25' 59'' South , 13° 8' 59'' East
Latitude & Longitude (decimal): -1.43333,13.15000
Köppen climate type:Aw : Tropical savanna, wet

Sedimentary uranium deposit hosted by fractured Francevillian (Precambrian) metasediments (sandstone).
Located 80 km northwest of the town of Franceville.

The mine closed in 1999 after 40 years of production.

Mineral List

36 valid minerals. 9 (TL) - type locality of valid minerals.

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

2500 - 4000 Ma

ID: 1377831
Archean intrusive and metamorphic terranes

Age: Archean (2500 - 4000 Ma)

Comments: Mixtures of metamorphic and intrusive or plutonic rocks, tracts known as crystalline, migmatitic terranes, moderately to highly metamorphosed rocks of unknown origin with or without intrusions. This classification is inherently prone to variable interpretation, as other compilers might distinguish some packages by their metamorphic or gneissic protoliths, and the associated age ranges may be more variable.

Lithology: Intrusive and metamorphic terranes

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

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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Bariand, P., Chantret, F., Pouget, R. and Rimsky, A. (1963): Une nouvelle éspèce minérale: la chervetite, pyrovanadate de plomb Pb2V2O7. Bull. Soc. Franc. Minéral. Cristallogr. 86, 117-120 (in French).
Branche, G., Bariand, P., Chantret, F., Pouget, R. & Rimsky, A. (1963) La vanuralite, nouveau mineral uranifère. Compte Rendu Acad. Sci. Paris (1963), 256, 5374-5376 (in French). [Abstract: American Mineralogist (1963): 48: 1415.]
Cesbron, F. and Fritsche, J. (1969): La mounanaïte, nouveau vanadate de fer et de plomb hydraté. Bulletin de la Société française de Minéralogie et de Cristallographie: 92: 196-202.
Cesbron, F. (1970) Nouvelle données sur la vanuralite. Existence de la méta-vanuralite. Bulletin de la Société française de Minéralogie et de Cristallographie (1970): 93: 242-248.
Cesbron, F. and Vachey, H. (1970): La lenoblite, nouvel oxyde hydrate de vanadium (IV). Bull. Soc. fr. Mineral., 93, 235–241 (in French with English abs.). [Abs. in American Mineralogist (1971): 56: 635-636.]
Cesbron, F. and Vachey, H. (1971): La bariandite, nouvel oxyde hydraté de vanadium (IV) et (V). Bull Soc. fr. Minéral. 94, 49-54 (in French with English abstract). [Abs. in American Mineralogist (1972) 57, 1555.]
Borène, J. and Cesbron, F. (1971) Structure cristalline de la curiénite Pb(UO2)2(VO4)2·5H2O. Bulletin de la Société française de Minéralogie et de Cristallographie: 94: 8-14.
Shannon, R. D. & Calvo, C. (1973): Refinement of the crystal structure of synthetic chervetite, Pb2V2O7. Can. J. Chem. 51, 70-76.
Mineralogical Record (1975) 6 (5), 237-252.
Deliens M., Piret P. & Comblain G. (1981): Les Minéraux secondaires d'uranium du Zaïre.
Mereiter, K. (1986) Crystal structure refinements of two francevillites, (Ba,Pb)[(UO2)2V2O8]·5H2O. Neues Jahrbuch für Mineralogie, Monatshefte (1986): 552-560.
Evans, Jr., H.T., and Hughes, J.M. (1990): Crystal chemistry of the natural vanadium bronzes. American Mineralogist 75, 508-521.
Schindler, M., and Hawthorne, F.C. (1999): Schubnelite, Fe(3+)(V(5+)O4)(H2O), a novel heteropolyhedral framework mineral. American Mineralogist 84(4), 665-668.
Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

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