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Blakala pegmatites, Kolondiéba Cercle, Sikasso Region, Malii
| Regional Level Types | |
|---|---|
| Blakala pegmatites | Pegmatite Field |
| Kolondiéba Cercle | Cercle |
| Sikasso Region | Region |
| Mali | Country |
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Latitude & Longitude (WGS84):
10° 59' 9'' North , 6° 49' 5'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The surrounding terrain is composed of metasediments (Figure 8), including fine gneisses and micaschists, enriched with biotite and amphibole. These metasediments are shaped by several isoclinal folding systems and a final crenulation, exhibiting a sub-vertical cleavage that is oriented east-west. Near the contact zones, there are concentrations of white feldspar-mica-quartz, indicative of typical contact phenomena between different rock types. The pegmatite outcrops essentially mirror their actual extension, and contacts with the surrounding rock are evident all around. Occasionally, enclaves of shale less than 1-meterthick, aligned with the main axis, are visible within the pegmatite. The Blakala pegmatite is characterized by its multicentimetre coarse grain size, comprising k-feldspar (20–35%), quartz (20–30%), spodumene (20–30%), white mica, biotite, and opaque minerals (totaling 10–15%). The spodumene crystals can reach sizes up to 30 cm.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
3 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
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Alphabetical List Tree DiagramDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Spodumene | 9.DA.30 | LiAlSi2O6 |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Amphibole Supergroup' | - | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'K Feldspar' | - | |
| ⓘ | 'White mica' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Li | Lithium | |
| Li | ⓘ Spodumene | LiAlSi2O6 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Spodumene | LiAlSi2O6 |
| F | Fluorine | |
| F | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Spodumene | LiAlSi2O6 |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Spodumene | LiAlSi2O6 |
| Cl | Chlorine | |
| Cl | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | Titanium | |
| Ti | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | Iron | |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Other Regions, Features and Areas containing this locality
AfricaContinent
African PlateTectonic Plate
- West African CratonCraton
- Leo RiseShield
West AfricaUN Subregion
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References
[1]Traore, Elhadji Mory; Olatunji, Akinade S; Sidibe, Mory; Konate, Sory I M; Kouagou N’dah, N’Tcha Daniel; Lemewihbwen Ngiamte, George (2025) Geological setting, geochemistry and mineralogy of lithium bearing pegmatites in South Western Mali, West Africa; a review. Geology, Ecology, and Landscapes, 1-23
