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Gitarama pegmatite field, Nyamabuye, Muhanga District, Southern Province, Rwandai
| Regional Level Types | |
|---|---|
| Gitarama pegmatite field | Pegmatite Field |
| Nyamabuye | Sector |
| Muhanga District | District |
| Southern Province | Province |
| Rwanda | Country |
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Latitude & Longitude (WGS84):
2° 4' 27'' South , 29° 45' 24'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The Gitarama-Gatumba pegmatite field is a well-developed example of a regionally zoned leucogranite-pegmatite system that culminates in Nb-Ta-Sn mineralized pegmatites belonging to the rare-element class. The pegmatites are genetically related to the post-compressional G4 granites. The regional pegmatite zonation comprises a sequence from leucocratic G4 granites to four successive zones of pegmatite bodies: a common biotite zone (#1), a common biotite-muscovite zone (#2), a common muscovite zone (#3), and a mineralized and most distal rare-element class pegmatite zone (#4). The first three pegmatite zones all belong to the muscovite-rare-element class. The large-scale differentiation of the four subsequent pegmatite zones and the development of the regional zonation have been characterized in terms of extensive fractional crystallization of the parental G4 granitic source magma.
There are solid inclusions in the tourmaline.
There are solid inclusions in the tourmaline.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities14 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | 'Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series' | 4.. | |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Moganite | 4.DA.20 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Nahcolite | 5.AA.15 | NaHCO3 |
| ⓘ | Dawsonite | 5.BB.10 | NaAlCO3(OH)2 |
| Group 6 - Borates | |||
| ⓘ | Sassolite | 6.AA.05 | H3BO3 |
| ⓘ | Jeremejevite | 6.AB.15 | Al6(BO3)5(F,OH)3 |
| ⓘ | Qilianshanite | 6.H0.55 | NaHCO3 · H3BO3 · 2H2O |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Alunite | 7.BC.10 | KAl3(SO4)2(OH)6 |
| ⓘ | Alum-(K) | 7.CC.20 | KAl(SO4)2 · 12H2O |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Childrenite | 8.DD.20 | Fe2+Al(PO4)(OH)2 · H2O |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Dickite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Tourmaline' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'K Feldspar' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| H | ⓘ Dawsonite | NaAlCO3(OH)2 |
| H | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| H | ⓘ Jeremejevite | Al6(BO3)5(F,OH)3 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Nahcolite | NaHCO3 |
| H | ⓘ Alum-(K) | KAl(SO4)2 · 12H2O |
| H | ⓘ Qilianshanite | NaHCO3 · H3BO3 · 2H2O |
| H | ⓘ Sassolite | H3BO3 |
| H | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | Boron | |
| B | ⓘ Jeremejevite | Al6(BO3)5(F,OH)3 |
| B | ⓘ Qilianshanite | NaHCO3 · H3BO3 · 2H2O |
| B | ⓘ Sassolite | H3BO3 |
| B | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| C | Carbon | |
| C | ⓘ Dawsonite | NaAlCO3(OH)2 |
| C | ⓘ Nahcolite | NaHCO3 |
| C | ⓘ Qilianshanite | NaHCO3 · H3BO3 · 2H2O |
| O | Oxygen | |
| O | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| O | ⓘ Dawsonite | NaAlCO3(OH)2 |
| O | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| O | ⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series | |
| O | ⓘ Jeremejevite | Al6(BO3)5(F,OH)3 |
| O | ⓘ Moganite | SiO2 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Nahcolite | NaHCO3 |
| O | ⓘ Alum-(K) | KAl(SO4)2 · 12H2O |
| O | ⓘ Qilianshanite | NaHCO3 · H3BO3 · 2H2O |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Sassolite | H3BO3 |
| O | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | ⓘ Jeremejevite | Al6(BO3)5(F,OH)3 |
| Na | Sodium | |
| Na | ⓘ Dawsonite | NaAlCO3(OH)2 |
| Na | ⓘ Nahcolite | NaHCO3 |
| Na | ⓘ Qilianshanite | NaHCO3 · H3BO3 · 2H2O |
| Na | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | Aluminium | |
| Al | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| Al | ⓘ Dawsonite | NaAlCO3(OH)2 |
| Al | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Jeremejevite | Al6(BO3)5(F,OH)3 |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Alum-(K) | KAl(SO4)2 · 12H2O |
| Al | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Moganite | SiO2 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| P | Phosphorus | |
| P | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| S | Sulfur | |
| S | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| S | ⓘ Alum-(K) | KAl(SO4)2 · 12H2O |
| K | Potassium | |
| K | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Alum-(K) | KAl(SO4)2 · 12H2O |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mn | Manganese | |
| Mn | ⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series | |
| Fe | Iron | |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| Fe | ⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series | |
| Fe | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Ta | Tantalum | |
| Ta | ⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series | |
Localities in this Region
- Southern Province
- Muhanga District
- Nyamabuye
- Gitarama pegmatite field
- Nyamabuye
- Muhanga District
Other Regions, Features and Areas containing this locality
AfricaContinent
- East African Rift System (EARS)Zone (Tectonic)
- Albertine RiftZone (Tectonic)
Somali PlateTectonic Plate
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References
[1]Hulsbosch, Niels, Thomas, Rainer, Boiron, Marie-Christine, Dewaele, Stijn, Muchez, Philippe (2017) Direct Observation of Boro-Aluminosilicate Melt Compositions: Insights From Raman Spectroscopy of Melt Inclusions In Pegmatitic Tourmaline of the Gatumba-Gitarama Area (Rwanda) The Canadian Mineralogist, 55 (3) 377-397 doi:10.3749/canmin.1600093
