Big Water, Freetown layered complex, Western Area, Sierra Leonei
Regional Level Types | |
---|---|
Big Water | Alluvial Deposit |
Freetown layered complex | Complex |
Western Area | Area |
Sierra Leone | Country |
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Latitude & Longitude (WGS84):
8° 17' 24'' North , 13° 9' 2'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Heavy mineral concentrates from rivers and river terraces near York, Freetown Peninsula. Artisanal mining.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
24 valid minerals.
Detailed Mineral List:
ⓘ Baddeleyite Formula: ZrO2 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Braggite Formula: PdPt3S4 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Cooperite Formula: PtS Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Cuproiridsite Formula: (Cu,Fe)Ir2S4 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Cuprorhodsite Formula: (Cu1+0.5Fe3+0.5)Rh3+2S4 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Erlichmanite Formula: OsS2 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ 'Feldspar Group' Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Galena Formula: PbS Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Gibbsite Formula: Al(OH)3 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Goethite Formula: α-Fe3+O(OH) Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Hematite Formula: Fe2O3 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Hongshiite Formula: PtCu Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Ilmenite Formula: Fe2+TiO3 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Irarsite Formula: (Ir,Ru,Rh,Pt)AsS Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Isoferroplatinum Formula: Pt3Fe Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Laurite Formula: RuS2 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Maghemite Formula: (Fe3+0.67◻0.33)Fe3+2O4 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Magnetite var. Titanium-bearing Magnetite Formula: Fe2+(Fe3+,Ti)2O4 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Osmium Formula: (Os,Ir,Ru) Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ 'Pyroxene Group' Formula: ADSi2O6 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Quartz Formula: SiO2 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Rutile Formula: TiO2 Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Sphalerite Formula: ZnS Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Tulameenite Formula: Pt2CuFe Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Vysotskite Formula: PdS Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
ⓘ Zircon Formula: Zr(SiO4) Reference: Bowles, J. F., Suárez, S., Prichard, H. M., & Fisher, P. C. (2018). The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine, 1-30. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Hongshiite | 1.AG.45 | PtCu |
ⓘ | Isoferroplatinum | 1.AG.35 | Pt3Fe |
ⓘ | Osmium | 1.AF.05 | (Os,Ir,Ru) |
ⓘ | Tulameenite | 1.AG.40 | Pt2CuFe |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Braggite | 2.CC.35a | PdPt3S4 |
ⓘ | Cooperite | 2.CC.35b | PtS |
ⓘ | Cuproiridsite | 2.DA.05 | (Cu,Fe)Ir2S4 |
ⓘ | Cuprorhodsite | 2.DA.05 | (Cu1+0.5Fe3+0.5)Rh3+2S4 |
ⓘ | Erlichmanite | 2.EB.05a | OsS2 |
ⓘ | Galena | 2.CD.10 | PbS |
ⓘ | Irarsite | 2.EB.25 | (Ir,Ru,Rh,Pt)AsS |
ⓘ | Laurite | 2.EB.05a | RuS2 |
ⓘ | Sphalerite | 2.CB.05a | ZnS |
ⓘ | Vysotskite | 2.CC.35a | PdS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Baddeleyite | 4.DE.35 | ZrO2 |
ⓘ | Gibbsite | 4.FE.10 | Al(OH)3 |
ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
ⓘ | Maghemite | 4.BB.15 | (Fe3+0.67◻0.33)Fe3+2O4 |
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | var. Titanium-bearing Magnetite | 4.BB.05 | Fe2+(Fe3+,Ti)2O4 |
ⓘ | Quartz | 4.DA.05 | SiO2 |
ⓘ | Rutile | 4.DB.05 | TiO2 |
Group 9 - Silicates | |||
ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
Unclassified Minerals, Rocks, etc. | |||
ⓘ | 'Feldspar Group' | - | |
ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
List of minerals for each chemical element
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Bowles, J.F., Suárez, S., Prichard, H.M., Fisher, P.C. (2018) The mineralogy, geochemistry and genesis of the alluvial platinum-group minerals of the Freetown Layered Complex, Sierra Leone. Mineralogical Magazine: 82: Supplement 1: 1-30.
External Links
https://pdfs.semanticscholar.org/1c82/745e86a236574908f0be604e16515c936314.pdf [Bowles et al., 2018]
https://thediggings.com/mines/usgs10038322
https://thediggings.com/mines/usgs10038322
Other Regions, Features and Areas containing this locality
African PlateTectonic Plate
- Senegal-Bove basinBasin
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