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Buranga pegmatite, Gatumba District, Western Province, Rwanda

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Key
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Latitude & Longitude (WGS84): 1° 55' 17'' South , 29° 39' 15'' East
Latitude & Longitude (decimal): -1.92139,29.65417
GeoHash:G#: kxtj4f1x0
Locality type:Pegmatite
Köppen climate type:Cfb : Temperate oceanic climate


Unusual Al-rich and Fe-Mn-rich phosphate pegmatite.


Mineral List

Actinolite

Albite

var: Cleavelandite

var: Oligoclase

Alluaudite

'Alluaudite-Na□'

Amblygonite

'Anorthoclase'

'Apatite'

'Apophyllite'

Arrojadite-(BaFe)

'Arrojadite Group'

Attakolite

Augelite

Autunite

Barbosalite

Berlinite

Bermanite

Bertossaite (TL)

Beryl

'Biotite'

Bismuth

Bismuthinite

Bismutite

Bjarebyite

Brazilianite

Burangaite (TL)

Cacoxenite

Cancrinite

Cassiterite

Cerussite

Chalcopyrite

Childrenite

'Columbite-(Fe)-Columbite-(Mn) Series'

Crandallite

Cryptomelane

Dufrénite

Elbaite

Eosphorite

Epidote

Fergusonite-(Y)

Ferrisicklerite

Fillowite

Fluorapatite

var: Mn-bearing Fluorapatite

Frondelite

Galena

Gatumbaite (TL)

Goethite

Gormanite

Graftonite

Griphite

'Gummite'

Hematite

var: Martite

Heterosite

'Hornblende'

Hureaulite

Lacroixite

Landesite

Lazulite

'Lazulite-Scorzalite Series'

'Lepidolite'

Leucophosphite

'Limonite'

Lipscombite

Lithiophilite

Magnetite

Marcasite

Microcline

Microlite Group

var: Uranmicrolite (of Hogarth 1977) ?

Mitridatite

'Monazite'

Monazite-(Ce)

Montebrasite

Muscovite

'Natromontebrasite'

Opal

Orthoclase

Paragonite

Phlogopite

Phosphosiderite

'Pinite'

Purpurite

Pyrite

'Pyrochlore'

Quartz

var: Amethyst

var: Chalcedony

var: Rock Crystal

var: Rose Quartz

var: Smoky Quartz

Rhodonite

Rockbridgeite

Rosemaryite

Samuelsonite

Scheelite

Schorl

Scorodite

Scorzalite

Serrabrancaite

Sicklerite

Siderophyllite

Sphalerite

Spodumene

Stanĕkite

Stewartite

Strengite

Talc

Tantalite-(Fe)

Tantalite-(Mn)

Tavorite

Thoreaulite

Topaz

'Tourmaline'

Triphylite

Triplite

Trolleite

'UM1982-08-PO:FeHMn'

Variscite

Varulite

Vernadite

Vivianite

'Wad'

Wardite

Wavellite

Wyllieite

'Zinnwaldite'

Zircon

var: Malacon


100 valid minerals. 3 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

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 Macrostrat.org

Ectasian - Paleoproterozoic
1200 - 2500 Ma



ID: 3184636
Paleoproterozoic-Mesoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1200 - 2500 Ma)

Lithology: Crystalline metamorphic 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]

Statherian - Orosirian
1600 - 2050 Ma



ID: 3306248

Age: Paleoproterozoic (1600 - 2050 Ma)

Lithology: Plutonic and metamorphic

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

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



This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Polinard, E. (1950) La montébrasite de Buranga. 3e Congr. Nat. Sci., Bruxelles: 8: 18-19.
Thoreau, J. and Delhal, J. (1950) Les phosphates ferro-manganésifères de la pegmatite de Buranga (Ruanda occidental). 3e Congr. Nat. Sci., Bruxelles: 8: 30-34.
Thoreau, J. (1954) L'alluaudite de la pegmatite de Buranga (Ruanda). Bulletin de l'Académie royale de Belgique: C. Sci. 5e: 40: 230-237.
Thoreau, J. and Bastien, C. (1954) Lazulite et scorzalite de pegmatites du Congo belge et du Ruanda. Bulletin de l'Académie royale de Belgique: Cl. Sci. 5e: 40: 600-607.
Thoreau, J. and Bastien, C. (1954) Les phosphates des pegmatites du Rwanda occidental. Bulletin de l'Académie Royale des Sciences coloniales, Sect. Sci. Nat. Bruxelles: 25: 1595-1603.
Thoreau, J. and Safiannikof, A. (1957) Triphylite, lithiophilite et phosphates associés du Congo Belge et du Ruanda. Bulletin de l'Académie Royale de Belgique: Cl. Sci. 5e: 43: 324-327.
Van Wambeke, L. (1957) Présence de priorité dans les monts Kibara et de fergusonite au Ruanda. Bulletin de la Société Belge de Géologie: 66: 35-53.
Bertossa, A. (1960) Le gîte minéralogique de Buranga. Rapport annuel du Service Géologique du Ruanda-Urundi: 1: 23-27.
Altmann, J. (1961) L'occurrence de brasilianite, augélite, frondélite et lithiophilite dans la pegmatite de Buranga. Bulletin suisse de Minéralogie et de Pétrographie: 41: 407-430.
Van Tassel, R. (1961) La brazilianite de Buranga (Ruanda occidental). Académie Royale des Sciences d'Outre-Mer (Nelle série): 7: 404-409.
Gallagher, M.J. and Gerards, J.F. (1963) Berlinite from Rwanda. Mineralogical Magazine: 33: 613-615.
Bertossa, A. (1965) La pegmatite de Buranga. Bulletin du Service Géologique de la République du Rwanda: 2: 1-3.
von Knorring, O. (1965) Notes on some pegmatite minerals from Rwanda. Bulletin du Service Géologique de la République du Rwanda: 2: 11-14 [bertossaite description, as an unnamed phase].
Bertossa, A. (1966) Thoreaulite de Buranga. Bulletin du Service Géologique de la République du Rwanda: 3: 19.
von Knorring, O. and Mrose, M.E. (1966) Bertossaite (Li,Na)2(Ca,Fe,Mn)Al4 (PO4)(OH,F)4, a new mineral from Rwanda (Africa). (Abstr.) Canadian Mineralogist: 8: 668.
Bertossa, A. (1968) Inventaire des minéraux du Rwanda. Bulletin du Service Géologique de Rwanda: 4: 25-45.
Bertossa, A. (1969) Addendum à l'inventaire des minéraux du Rwanda. Bulletin du Service Géologique de Rwanda: 5: 1-4.
von Knorring, O. (1969) A note on the phosphate mineralisation at the Buranga pegmatite, Rwanda. Bulletin du Service Geologique de la Republique du Rwanda: 5: 42-45.
Van Wambeke, L. (1971) The problem of cation deficiencies in some phosphates due to alteration processes. American Mineralogist: 56: 1366-1384 (Van Wambeke suggests the name "keno-mitridatite" for relatively unaltered mitridatite from the Buranga pegmatite.)
von Knorring, O. (1972) Notes on phosphate minerals from Buranga pegmatite. 16th annual Report Research Institute of African Geology, Univ. Leeds: 56-57.
von Knorring, O. (1973) Notes on pegmatite minerals from Rwanda, Uganda and South West Africa. 17th annual Report Research Institute of African Geology, Univ. Leeds, 72-73.
Fransolet, A.-M. (1975) Étude minéralogique et pétrologique des phosphates de pegmatites granitiques. I & II. Thèse de doctorat, Inst. Minéralogie, Université de Liège (unpublished).
von Knorring, O. and Fransolet, A.-M. (1975) An occurrence of bjarebyite in the Buranga pegmatite, Rwanda. Schweizerische Mineralogische und Petrographische Mitteilungen: 55: 9-18.
von Knorring, O. and Fransolet, A.-M. (1977) Gatumbaite, CaAl2(PO4)2(OH)2.H2O: a new species from Buranga pegmatite, Rwanda. Neues Jahrbuch für Mineralogie, Monatshefte: 561-568.
von Knorring, O., Lehtinen, M., and Sahama, T.G. (1977) Burangaite, a new phosphate mineral from Rwanda. Bulletin of the Geological Society of Finland: 49: 33-36.
Boury, P. (1980-1981) Comportement du fer et du manganèse dans des associations de phosphates pegmatitiques. Unpubl. M.Sc. thesis (Faculté des Sciences, Univ. Liège).
Fransolet, A.-M. (1980) The eosphorite-childrenite series associated with the Li-Mn-Fe phosphate minerals from the Buranga pegmatite, Rwanda. Mineralogical Magazine: 43: 1015-1023.
von Knorring, O. and Sahama, T.G. (1982) Some FeMn phosphates from the Buranga pegmatite, Rwanda. Schweizerische mineralogische und petrographische Mitteilungen, Frauenfeld: 62: 343-352.
Fransolet, A.-M. and Abraham, K. (1983) Une association triplite-montebrasite-griphite dans la pegmatite de Buranga, Rwanda. Annales de la Société Geologique de Belgique: 106: 299-309.
von Knorring, O. and Condliffe, E. (1987) Mineralized pegmatites in Africa. Geological Journal: 22 (Issue S2): 253-270.
Fransolet, A.-M. (1989) The problem of Na-Li substitution in primary Li-Al phosphates: new data on lacroixite, a relatively widespread mineral. Canadian Mineralogist: 27: 211-217.
Fransolet, A.-M., von Knorring, O., and Fontan, F. (1992) A new occurrence of samuelsonite in the Buranga pegmatite, Rwanda. Bulletin of the Geological Society of Finland: 64(1): 13-21.
Fransolet, A.-M. (1995) Wyllieite et rosemaryite dans la pegmatite de Buranga, Rwanda. European Journal of Mineralogy: 7: 567-575.
Daltry, V.D.C. and von Knorring, O. (1998) Type-mineralogy of Rwanda with particular reference to the Buranga pegmatite. Geologica Belgica: 1: 9-15.
Cook, R.B. (2000) Brazilianite. Rocks & Minerals: January 2000.
Hulsbosch, N., Hertogen, J., Dewaele, S., André, L., and Muchez, P. (2013) Petrographic and mineralogical characterisation of fractionated pegmatites culminating in the Nb-Ta-Sn pegmatites of the Gatumba area (western Rwanda). Geologica Belgica: 16: 105-117.

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