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Sierra Leone

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Key
Lock Map
Area:71,740 km2
Locality type:Country


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Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

48 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

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Alphabetical List Tree Diagram

Detailed Mineral List:

'Albite-Anorthite Series'
'Anorthosite'
'Apatite'
Arsenopyrite
Formula: FeAsS
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Baddeleyite
Formula: ZrO2
'Bauxite'
Bornite
Formula: Cu5FeS4
Braggite
Formula: (Pt,Pd,Ni)S
Calcite
Formula: CaCO3
Chalcopyrite
Formula: CuFeS2
'Chlorite Group'
Chromite
Formula: Fe2+Cr3+2O4
'commodity:Chromium'
Formula: Cr
Cooperite
Formula: PtS
Cuproiridsite
Formula: (Cu,Fe)Ir2S4
Cuprorhodsite
Formula: (Cu,Fe)Rh2S4
Diamond
Formula: C
'commodity:Diamond'
Diopside
Formula: CaMgSi2O6
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Erlichmanite
Formula: OsS2
'Fayalite-Forsterite Series'
'Feldspar Group'
Forsterite
Formula: Mg2SiO4
'Gabbro'
Galena
Formula: PbS
'Garnet Group'
Formula: X3Z2(SiO4)3
Gibbsite
Formula: Al(OH)3
Goethite
Formula: α-Fe3+O(OH)
Gold
Formula: Au
Hematite
Formula: Fe2O3
Hongshiite
Formula: PtCu
Ilmenite
Formula: Fe2+TiO3
Irarsite
Formula: (Ir,Ru,Rh,Pt)AsS
Iron
Formula: Fe
Isoferroplatinum
Formula: Pt3Fe
Keithconnite
Formula: Pd20Te7
'Kimberlite'
Laurite
Formula: RuS2
Maghemite
Formula: Fe3+2O3
Magnetite
Formula: Fe2+Fe3+2O4
Magnetite var: Titaniferous Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
Miassite
Formula: Rh17S15
'Norite'
Osmium
Formula: (Os,Ir,Ru)
Pentlandite
Formula: (FexNiy)Σ9S8
Perovskite
Formula: CaTiO3
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Platinum
Formula: Pt
'commodity:Platinum-Group Metals'
'Prassoite'
Formula: Rh17S15
Pyrite
Formula: FeS2
'Pyroxene Group'
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Rutile
Formula: TiO2
Reference: Specimen obtained via Vandal King from old MM collection.
Rutile var: Ilmenorutile
Formula: Fex(Nb,Ta)2x · 4Ti1-xO2
Reference: Specimen obtained via Vandal King from old MM collection.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Sphalerite
Formula: ZnS
Titanite
Formula: CaTi(SiO4)O
Titanomaghemite
Formula: Fe3+(Fe3+,Ti4+,Fe2+,◻)2O4
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
'Troctolite'
Tulameenite
Formula: Pt2CuFe
'UM1985-06-O:CrFeMgTi'
Formula: (Fe2+,Mg,Ti,Cr)6O7
Vysotskite
Formula: (Pd,Ni)S
Wüstite
Formula: FeO
Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Diamond'1.CB.10aC
'Gold'1.AA.05Au
'Hongshiite'1.AG.45PtCu
Iron1.AE.05Fe
Isoferroplatinum1.AG.35Pt3Fe
Osmium1.AF.05(Os,Ir,Ru)
Platinum1.AF.10Pt
Tulameenite1.AG.40Pt2CuFe
Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
'Bornite'2.BA.15Cu5FeS4
'Braggite'2.CC.35a(Pt,Pd,Ni)S
'Chalcopyrite'2.CB.10aCuFeS2
'Cooperite'2.CC.35bPtS
'Cuproiridsite'2.DA.05(Cu,Fe)Ir2S4
'Cuprorhodsite'2.DA.05(Cu,Fe)Rh2S4
'Erlichmanite'2.EB.05aOsS2
'Galena'2.CD.10PbS
Irarsite2.EB.25(Ir,Ru,Rh,Pt)AsS
Keithconnite2.BC.20Pd20Te7
Laurite2.EB.05aRuS2
Miassite2.BC.05Rh17S15
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Vysotskite2.CC.35a(Pd,Ni)S
Group 4 - Oxides and Hydroxides
'Baddeleyite'4.DE.35ZrO2
'Chromite'4.BB.05Fe2+Cr3+2O4
'Gibbsite'4.FE.10Al(OH)3
'Goethite'4.00.α-Fe3+O(OH)
'Hematite'4.CB.05Fe2O3
'Ilmenite'4.CB.05Fe2+TiO3
Maghemite4.BB.15Fe3+2O3
Magnetite4.BB.05Fe2+Fe3+2O4
var: Titaniferous Magnetite4.BB.05Fe2+(Fe3+,Ti)2O4
Perovskite4.CC.30CaTiO3
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
var: Ilmenorutile4.DB.05Fex(Nb,Ta)2x · 4Ti1-xO2
Titanomaghemite4.BB.15Fe3+(Fe3+,Ti4+,Fe2+,◻)2O4
Wüstite4.AB.25FeO
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 9 - Silicates
'Augite'9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
'Diopside'9.DA.15CaMgSi2O6
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Forsterite'9.AC.05Mg2SiO4
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Titanite9.AG.15CaTi(SiO4)O
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Anorthosite'-
'Apatite'-
'Bauxite'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'Gabbro'-
'Garnet Group'-X3Z2(SiO4)3
Kimberlite-
Norite-
Prassoite-Rh17S15
Pyroxene Group-
Serpentine Subgroup-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Troctolite-
UM1985-06-O:CrFeMgTi-(Fe2+,Mg,Ti,Cr)6O7

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Platinum Group Metals and Alloys
Hongshiite1.2.3.1PtCu
Isoferroplatinum1.2.5.1Pt3Fe
Osmium1.2.2.1(Os,Ir,Ru)
Platinum1.2.1.1Pt
Tulameenite1.2.4.2Pt2CuFe
Semi-metals and non-metals
Diamond1.3.6.1C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:1
Keithconnite2.2.6.1Pd20Te7
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Braggite2.8.5.3(Pt,Pd,Ni)S
Cooperite2.8.5.1PtS
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
Vysotskite2.8.5.2(Pd,Ni)S
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 3:4
Cuproiridsite2.10.1.15(Cu,Fe)Ir2S4
Cuprorhodsite2.10.1.16(Cu,Fe)Rh2S4
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Erlichmanite2.12.1.16OsS2
Irarsite2.12.3.7(Ir,Ru,Rh,Pt)AsS
Laurite2.12.1.10RuS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX
Wüstite4.2.1.6FeO
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
Maghemite4.3.7.1Fe3+2O3
Perovskite4.3.3.1CaTiO3
AX2
Baddeleyite4.4.14.1ZrO2
Rutile4.4.1.1TiO2
var: Ilmenorutile4.4.1.2Fex(Nb,Ta)2x · 4Ti1-xO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
X(OH)3
Gibbsite6.3.1.1Al(OH)3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Anorthosite'-
'Apatite'-
'Bauxite'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'Gabbro'-
'Garnet Group'-X3Z2(SiO4)3
Iron-Fe
'Kimberlite'-
Magnetite
var: Titaniferous Magnetite
-Fe2+(Fe3+,Ti)2O4
Miassite-Rh17S15
'Norite'-
'Prassoite'-Rh17S15
'Pyroxene Group'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Titanomaghemite-Fe3+(Fe3+,Ti4+,Fe2+,◻)2O4
'Troctolite'-
'UM1985-06-O:CrFeMgTi'-(Fe2+,Mg,Ti,Cr)6O7

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H GibbsiteAl(OH)3
H Goethiteα-Fe3+O(OH)
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C CalciteCaCO3
C DiamondC
OOxygen
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O BaddeleyiteZrO2
O CalciteCaCO3
O ChromiteFe2+Cr23+O4
O DiopsideCaMgSi2O6
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O ForsteriteMg2SiO4
O Garnet GroupX3Z2(SiO4)3
O GibbsiteAl(OH)3
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O IlmeniteFe2+TiO3
O Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
O MaghemiteFe23+O3
O MagnetiteFe2+Fe23+O4
O PerovskiteCaTiO3
O PhlogopiteKMg3(AlSi3O10)(OH)2
O QuartzSiO2
O RutileTiO2
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O Magnetite (var: Titaniferous Magnetite)Fe2+(Fe3+,Ti)2O4
O TitaniteCaTi(SiO4)O
O TitanomaghemiteFe3+(Fe3+,Ti4+,Fe2+,◻)2O4
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O UM1985-06-O:CrFeMgTi(Fe2+,Mg,Ti,Cr)6O7
O WüstiteFeO
O ZirconZr(SiO4)
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg DiopsideCaMgSi2O6
Mg ForsteriteMg2SiO4
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Mg UM1985-06-O:CrFeMgTi(Fe2+,Mg,Ti,Cr)6O7
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al GibbsiteAl(OH)3
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si DiopsideCaMgSi2O6
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si ForsteriteMg2SiO4
Si Garnet GroupX3Z2(SiO4)3
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si QuartzSiO2
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si TitaniteCaTi(SiO4)O
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si ZirconZr(SiO4)
SSulfur
S ArsenopyriteFeAsS
S BorniteCu5FeS4
S Braggite(Pt,Pd,Ni)S
S ChalcopyriteCuFeS2
S CooperitePtS
S Cuproiridsite(Cu,Fe)Ir2S4
S Cuprorhodsite(Cu,Fe)Rh2S4
S ErlichmaniteOsS2
S GalenaPbS
S Irarsite(Ir,Ru,Rh,Pt)AsS
S LauriteRuS2
S MiassiteRh17S15
S Pentlandite(FexNiy)Σ9S8
S PrassoiteRh17S15
S PyriteFeS2
S PyrrhotiteFe7S8
S SphaleriteZnS
S Vysotskite(Pd,Ni)S
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca PerovskiteCaTiO3
Ca TitaniteCaTi(SiO4)O
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
TiTitanium
Ti IlmeniteFe2+TiO3
Ti Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
Ti PerovskiteCaTiO3
Ti RutileTiO2
Ti Magnetite (var: Titaniferous Magnetite)Fe2+(Fe3+,Ti)2O4
Ti TitaniteCaTi(SiO4)O
Ti TitanomaghemiteFe3+(Fe3+,Ti4+,Fe2+,◻)2O4
Ti UM1985-06-O:CrFeMgTi(Fe2+,Mg,Ti,Cr)6O7
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr UM1985-06-O:CrFeMgTi(Fe2+,Mg,Ti,Cr)6O7
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe ArsenopyriteFeAsS
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe ChromiteFe2+Cr23+O4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
Fe IronFe
Fe IsoferroplatinumPt3Fe
Fe MaghemiteFe23+O3
Fe MagnetiteFe2+Fe23+O4
Fe Pentlandite(FexNiy)Σ9S8
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe Magnetite (var: Titaniferous Magnetite)Fe2+(Fe3+,Ti)2O4
Fe TitanomaghemiteFe3+(Fe3+,Ti4+,Fe2+,◻)2O4
Fe TulameenitePt2CuFe
Fe UM1985-06-O:CrFeMgTi(Fe2+,Mg,Ti,Cr)6O7
Fe WüstiteFeO
NiNickel
Ni Pentlandite(FexNiy)Σ9S8
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Ni Vysotskite(Pd,Ni)S
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu Cuproiridsite(Cu,Fe)Ir2S4
Cu Cuprorhodsite(Cu,Fe)Rh2S4
Cu HongshiitePtCu
Cu TulameenitePt2CuFe
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As Irarsite(Ir,Ru,Rh,Pt)AsS
ZrZirconium
Zr BaddeleyiteZrO2
Zr ZirconZr(SiO4)
NbNiobium
Nb Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
RuRuthenium
Ru Irarsite(Ir,Ru,Rh,Pt)AsS
Ru LauriteRuS2
RhRhodium
Rh Cuprorhodsite(Cu,Fe)Rh2S4
Rh Irarsite(Ir,Ru,Rh,Pt)AsS
Rh MiassiteRh17S15
Rh PrassoiteRh17S15
PdPalladium
Pd KeithconnitePd20Te7
Pd Vysotskite(Pd,Ni)S
TeTellurium
Te KeithconnitePd20Te7
TaTantalum
Ta Rutile (var: Ilmenorutile)Fex(Nb,Ta)2x · 4Ti1-xO2
OsOsmium
Os ErlichmaniteOsS2
Os Osmium(Os,Ir,Ru)
IrIridium
Ir Cuproiridsite(Cu,Fe)Ir2S4
Ir Irarsite(Ir,Ru,Rh,Pt)AsS
PtPlatinum
Pt Braggite(Pt,Pd,Ni)S
Pt CooperitePtS
Pt HongshiitePtCu
Pt Irarsite(Ir,Ru,Rh,Pt)AsS
Pt IsoferroplatinumPt3Fe
Pt PlatinumPt
Pt TulameenitePt2CuFe
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Jalloh, A. B., Sasaki, K., Thomas, M. O., & Jalloh, Y. (2013). The geology, mineral resources of Sierra Leone and how the resources can be used to develop the nation. Procedia Earth and Planetary Science, 6, 131-138.

Localities in this Region
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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.
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