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Byumba Au prospect, Gicumbi District, Northern Province, Rwandai
Regional Level Types
Byumba Au prospectProspect
Gicumbi DistrictDistrict
Northern ProvinceProvince
RwandaCountry

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Latitude & Longitude (WGS84):
1° 35' 29'' South , 30° 3' 50'' East
Latitude & Longitude (decimal):
-1.59141,30.06406
GRN:
S02E21
Type:
Prospect
Köppen climate type:
Aw : Tropical savanna, wet
Nearest Settlements:
PlacePopulationDistance
Byumba70,593 (2016)1.7km
Kabale43,500 (2016)39.0km
Kigali745,261 (2016)39.9km
Eglise Catholique, Centrale GIKO3,000 (2017)47.9km
Musanze86,685 (2016)48.7km
Mindat Locality ID:
457595
Long-form identifier:
mindat:1:2:457595:8
GUID (UUID V4):
0


The metasediments that host auriferous quartz veins at the Byumba deposit belong to the Bulimbi Formation of the Pindura Group. Structurally the strata are, situated in the Byumba synclinorium. The timing of sedimentary deposition is estimated between 1420 and 1375 Ma. In the Byumba synclinorium and the Rutongo anticline, the Bulimbi Formation has an approximate thickness of 1300 meters. Lithologically, the Bulimbi Formation consists of graphite- and pyrite-rich homogeneous black shales, intercalated by grey metapelites and beige metasandstones. [[1]

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


11 valid minerals.

Rock Types Recorded

Note: 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:

ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Chloritoid
Formula: Fe2+Al2O(SiO4)(OH)2
ⓘ Covellite
Formula: CuS
ⓘ Graphite
Formula: C
ⓘ Hematite
Formula: Fe2O3
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ 'Phyllosilicate'
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
ⓘ 'White mica'

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘCovellite2.CA.05aCuS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘChloritoid9.AF.85Fe2+Al2O(SiO4)(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
ⓘ'White mica'-
ⓘ'Phyllosilicate'-

List of minerals for each chemical element

HHydrogen
Hⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
BBoron
Bⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
Cⓘ GraphiteC
OOxygen
Oⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Oⓘ HematiteFe2O3
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AlAluminium
Alⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ CovelliteCuS
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChloritoidFe2+Al2O(SiO4)(OH)2
Feⓘ HematiteFe2O3
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CovelliteCuS
AsArsenic
Asⓘ ArsenopyriteFeAsS
AuGold
Auⓘ Native GoldAu

Other Regions, Features and Areas containing this locality

AfricaContinent
Somali PlateTectonic Plate

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

[1]Wouters, Sander; Hulsbosch, Niels; Kaskes, Pim; Claeys, Philippe; Dewaele, Stijn; Melcher, Frank; Onuk, Peter; Muchez, Philippe (2020) Late orogenic gold mineralization in the western domain of the Karagwe-Ankole Belt (Central Africa): Auriferous quartz veins from the Byumba deposit (Rwanda). Ore Geology Reviews, 125. doi:10.1016/j.oregeorev.2020.103666
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