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Rongi Amblygonite Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda

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Latitude & Longitude (WGS84): 1° 55' South , 29° 40' East
Latitude & Longitude (decimal): -1.91667,29.66667
GeoHash:G#: kxtj554de
Locality type:Pegmatite
Köppen climate type:Cfb : Temperate oceanic climate


Small pegmatite workings "Near the quarry of Rusororo ..."

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


5 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

Detailed Mineral List:

Berlinite
Formula: AlPO4
Reference: Fransolet, Andre-Mathieu, 1989, The Problem of Na-Li Substitution in Primary Li-Al Phosphates: New Data on Lacroixite, a Relatively Widespread Mineral, Canadian Mineralogist, v. 27, p. 211-217.
Columbite-(Fe)
Formula: FeNb2O6
Reference: Melcher, F., Graupner, T., Gäbler, H. E., Sitnikova, M., Henjes-Kunst, F., Oberthür, T., ... & Dewaele, S. (2015). Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb geochronology. Ore Geology Reviews, 64, 667-719.
Lacroixite
Formula: NaAl(PO4)F
Reference: Fransolet, Andre-Mathieu, 1989, The Problem of Na-Li Substitution in Primary Li-Al Phosphates: New Data on Lacroixite, a Relatively Widespread Mineral, Canadian Mineralogist, v. 27, p. 211-217.
Montebrasite
Formula: LiAl(PO4)(OH)
Reference: Fransolet, Andre-Mathieu, 1989, The Problem of Na-Li Substitution in Primary Li-Al Phosphates: New Data on Lacroixite, a Relatively Widespread Mineral, Canadian Mineralogist, v. 27, p. 211-217.
'Pegmatite'
Reference: Automatically generated from locality name
Scorzalite
Formula: Fe2+Al2(PO4)2(OH)2
Reference: Fransolet, Andre-Mathieu, 1989, The Problem of Na-Li Substitution in Primary Li-Al Phosphates: New Data on Lacroixite, a Relatively Widespread Mineral, Canadian Mineralogist, v. 27, p. 211-217.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Columbite-(Fe)'4.DB.35FeNb2O6
Group 8 - Phosphates, Arsenates and Vanadates
'Berlinite'8.AA.05AlPO4
'Lacroixite'8.BH.10NaAl(PO4)F
'Montebrasite'8.BB.05LiAl(PO4)(OH)
'Scorzalite'8.BB.40Fe2+Al2(PO4)2(OH)2
Unclassified Minerals, Rocks, etc.
'Pegmatite'-

List of minerals arranged by Dana 8th Edition classification

Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
AB2O6
Columbite-(Fe)8.3.2.2FeNb2O6
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Berlinite38.4.2.1AlPO4
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Lacroixite41.5.5.1NaAl(PO4)F
Montebrasite41.5.8.2LiAl(PO4)(OH)
(AB)3(XO4)2Zq
Scorzalite41.10.1.2Fe2+Al2(PO4)2(OH)2
Unclassified Minerals, Rocks, etc.
'Pegmatite'-

List of minerals for each chemical element

HHydrogen
H MontebrasiteLiAl(PO4)(OH)
H ScorzaliteFe2+Al2(PO4)2(OH)2
LiLithium
Li MontebrasiteLiAl(PO4)(OH)
OOxygen
O BerliniteAlPO4
O Columbite-(Fe)FeNb2O6
O LacroixiteNaAl(PO4)F
O MontebrasiteLiAl(PO4)(OH)
O ScorzaliteFe2+Al2(PO4)2(OH)2
FFluorine
F LacroixiteNaAl(PO4)F
NaSodium
Na LacroixiteNaAl(PO4)F
AlAluminium
Al BerliniteAlPO4
Al LacroixiteNaAl(PO4)F
Al MontebrasiteLiAl(PO4)(OH)
Al ScorzaliteFe2+Al2(PO4)2(OH)2
PPhosphorus
P BerliniteAlPO4
P LacroixiteNaAl(PO4)F
P MontebrasiteLiAl(PO4)(OH)
P ScorzaliteFe2+Al2(PO4)2(OH)2
FeIron
Fe Columbite-(Fe)FeNb2O6
Fe ScorzaliteFe2+Al2(PO4)2(OH)2
NbNiobium
Nb Columbite-(Fe)FeNb2O6

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Bertossa, A., 1960, Quelques apercus sur les pegmatites de la region de Katumba, Rapp. ann. Serv. Geol. Ruanda-Urundi, v. 1, p. 17-22.
Varlamoff, N., 1961, Materiaux pour l'etude des pegmatites du Congo et du Ruanda. Quatrieme note: Pegmatites a amblygonite et a spodumene et pegmatites fortement albitisees a spodumene et a cassiterite de la region de Katumba (Ruanda), Ann. Soc. Geol. Belg., v 84, p. 257-278.
Varlamoff, N., 1973, Considerations sur les types de pegmatites et sur leurs repartitions spatiales dans ou autour des granites du centre et de l'ouest africain, Colloque Scient. Intern., E. Raguin, Editions Masson, Paris, p. 145-165.
Fransolet, Andre-Mathieu, 1989, The Problem of Na-Li Substitution in Primary Li-Al Phosphates: New Data on Lacroixite, a Relatively Widespread Mineral, Canadian Mineralogist, v. 27, p. 211-217.


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