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Lutsiro, Sebeya river, Kabaya District, Western Province, Rwanda

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Latitude & Longitude (WGS84): 1° 55' 0'' South , 29° 25' 59'' East
Latitude & Longitude (decimal): -1.91667,29.43333
GeoHash:G#: kxsvjg0dw
Köppen climate type:Cfb : Temperate oceanic climate


Numerous pegmatites, quartz veins and alluvial and eluvial deposits.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals. 1 (TL) - type locality of valid minerals.

Detailed Mineral List:

Cassiterite
Formula: SnO2
Reference: Collection of NHM, Vienna.; 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.
Columbite-(Fe)
Formula: FeNb2O6
Reference: 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.
Ferberite
Formula: FeWO4
Reference: Roy Kristiansen
Foordite (TL)
Formula: Sn2+(Nb,Ta)2O6
Colour: brownish yellow with a greenish tint
Description: Daltry and von Knorring (1998): "it occurs in contact with stannoan plumbomicrolite, cassiterite, ferro-columbite, staringite, and ixiolite. Foordite from Lutsiro is in fact a lead-bearing variety."
Reference: Cerny, P., Fransolet, A.-M., Ercit, T.S., and Chapman, R. (1988) Foordite SnNb2O6 a new mineral species, and the foordite-thoreaulite series. Canadian Mineralogist: 26: 889-898.; Jambor, J. and Vanko, D.A. (1990) New mineral names. American Mineralogist: 75: 707.; 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.
Hydrotungstite
Formula: WO3 · 2H2O
Reference: Roy Kristiansen
Ixiolite
Formula: (Ta,Nb,Sn,Fe,Mn)4O8
Reference: 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.
Quartz
Formula: SiO2
Reference: Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): US Geological Survey Circular 930-O.
'Staringite'
Formula: (Fe,Mn)x(Ta,Nb)2xSn6-3xO12
Reference: 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.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Cassiterite'4.DB.05SnO2
'Columbite-(Fe)'4.DB.35FeNb2O6
'Ferberite'4.DB.30FeWO4
'Foordite' (TL)4.DG.15Sn2+(Nb,Ta)2O6
'Hydrotungstite'4.FJ.15WO3 · 2H2O
'Ixiolite'4.DB.25(Ta,Nb,Sn,Fe,Mn)4O8
'Quartz'4.DA.05SiO2
Unclassified Minerals, Rocks, etc.
'Staringite'-(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Ixiolite8.1.10.1(Ta,Nb,Sn,Fe,Mn)4O8
AB2O6
Columbite-(Fe)8.3.2.2FeNb2O6
Foordite (TL)8.3.10.2Sn2+(Nb,Ta)2O6
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Ferberite48.1.1.2FeWO4
Group 49 - HYDRATED MOLYBDATES AND TUNGSTATES
Acid Hydrated Molybdates and Tungstates
Hydrotungstite49.1.1.1WO3 · 2H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Staringite'-(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

List of minerals for each chemical element

HHydrogen
H HydrotungstiteWO3 · 2H2O
OOxygen
O CassiteriteSnO2
O Columbite-(Fe)FeNb2O6
O FerberiteFeWO4
O FoorditeSn2+(Nb,Ta)2O6
O HydrotungstiteWO3 · 2H2O
O Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
O QuartzSiO2
SiSilicon
Si QuartzSiO2
MnManganese
Mn Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
FeIron
Fe Columbite-(Fe)FeNb2O6
Fe FerberiteFeWO4
NbNiobium
Nb Columbite-(Fe)FeNb2O6
Nb FoorditeSn2+(Nb,Ta)2O6
Nb Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
SnTin
Sn CassiteriteSnO2
Sn FoorditeSn2+(Nb,Ta)2O6
TaTantalum
Ta FoorditeSn2+(Nb,Ta)2O6
Ta Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
WTungsten
W FerberiteFeWO4
W HydrotungstiteWO3 · 2H2O

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 3311416

Age: Proterozoic (1600 - 2500 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)
Cerny, P., Fransolet, A.-M., Ercit, T.S., and Chapman, R. (1988) Foordite SnNb2O6 a new mineral species, and the foordite-thoreaulite series. Canadian Mineralogist: 26: 889-898.
Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998) International Strategic Mineral Issues Summary Report - Tungsten. US Geological Survey Circular 930-O.
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.


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