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Lofdal-Bergville REE deposit, Khorixas District, Kunene Region, Namibiai
Regional Level Types
Lofdal-Bergville REE depositDeposit
Khorixas DistrictDistrict
Kunene RegionRegion
NamibiaCountry

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Key
Lock Map
Latitude & Longitude (WGS84): 20° 17' 31'' South , 14° 43' 28'' East
Latitude & Longitude (decimal): -20.29222,14.72472
GeoHash:G#: kk6kx1fjn
Locality type:Deposit
Köppen climate type:BWh : Hot deserts climate
Nearest Settlements:
PlacePopulationDistance
Khorixas12,021 (2012)26.5km


Late Proterozoic carbonatite veins and phonolite dikes in metasedimentary rorks (gneisses and schists) with stocks of nepheline syenite to 2km2. Veins are usually 0.5 to 5m in width and up to 25m in width by 5km in length.

Regions containing this locality

African PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


34 valid minerals.

Detailed Mineral List:

Aegirine
Formula: NaFe3+Si2O6
Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Albite
Formula: Na(AlSi3O8)
'Albite-Anorthite Series'
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
'Apatite'
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Baryte
Formula: BaSO4
'Bastnäsite'
Bastnäsite-(Ce)
Formula: Ce(CO3)F
'Biotite'
Calcite
Formula: CaCO3
Calcite var: Manganoan Calcite
Formula: (Ca,Mn)CO3
Cancrinite
Formula: (Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
'Chlorite Group'
Columbite-(Fe)
Formula: Fe2+Nb2O6
Dolomite
Formula: CaMg(CO3)2
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fluorapatite
Formula: Ca5(PO4)3F
Fluorite
Formula: CaF2
Hematite
Formula: Fe2O3
Ilmenite
Formula: Fe2+TiO3
'Limonite'
Formula: (Fe,O,OH,H2O)
Magnetite
Formula: Fe2+Fe3+2O4
Microcline
Formula: K(AlSi3O8)
'Monazite'
Monazite-(Ce)
Formula: Ce(PO4)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Nepheline
Formula: Na3K(Al4Si4O16)
'Parisite'
Parisite-(Ce)
Formula: CaCe2(CO3)3F2
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Pyrite
Formula: FeS2
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Quartz
Formula: SiO2
Riebeckite
Formula: ⃞[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Rutile
Formula: TiO2
Sodalite
Formula: Na8(Al6Si6O24)Cl2
Synchysite-(Ce)
Formula: CaCe(CO3)2F
Thorite
Formula: Th(SiO4)
Titanite
Formula: CaTi(SiO4)O
Xenotime-(Y)
Formula: Y(PO4)
Zircon
Formula: Zr(SiO4)
Zirconolite
Formula: CaZrTi2O7

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Columbite-(Fe)4.DB.35Fe2+Nb2O6
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Zirconolite4.DH.30CaZrTi2O7
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Bastnäsite-(Ce)5.BD.20aCe(CO3)F
Calcite5.AB.05CaCO3
var: Manganoan Calcite5.AB.05(Ca,Mn)CO3
Dolomite5.AB.10CaMg(CO3)2
Parisite-(Ce)5.BD.20bCaCe2(CO3)3F2
Synchysite-(Ce)5.BD.20cCaCe(CO3)2F
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Monazite-(Ce)8.AD.50Ce(PO4)
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Aegirine9.DA.25NaFe3+Si2O6
Aegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Albite9.FA.35Na(AlSi3O8)
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Cancrinite9.FB.05(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Nepheline9.FA.05Na3K(Al4Si4O16)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Riebeckite9.DE.25⃞[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Sodalite9.FB.10Na8(Al6Si6O24)Cl2
Thorite9.AD.30Th(SiO4)
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-
'Bastnäsite'-
'Biotite'-
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)
'Monazite'-
'Parisite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
'Pyrochlore Group'8.2.1.1A2Nb2(O,OH)6Z
Zirconolite8.2.5.5CaZrTi2O7
AB2O6
Columbite-(Fe)8.3.2.2Fe2+Nb2O6
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bastnäsite-(Ce)16a.1.1.1Ce(CO3)F
Parisite-(Ce)16a.1.5.1CaCe2(CO3)3F2
Synchysite-(Ce)16a.1.3.1CaCe(CO3)2F
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
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
Aegirine65.1.3c.2NaFe3+Si2O6
Aegirine-augite65.1.3b.2(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
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
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Al-Si Framework Feldspathoids and related species
Cancrinite76.2.5.3(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Nepheline76.2.1.2Na3K(Al4Si4O16)
Sodalite76.2.3.1Na8(Al6Si6O24)Cl2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Apatite'-
'Bastnäsite'-
'Biotite'-
Calcite
var: Manganoan Calcite
-(Ca,Mn)CO3
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)
'Monazite'-
'Parisite'-
Riebeckite-⃞[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H Limonite(Fe,O,OH,H2O)
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Pyrochlore GroupA2Nb2(O,OH)6Z
H Riebeckite⃞[Na2][Fe32+Fe23+]Si8O22(OH)2
CCarbon
C CalciteCaCO3
C AnkeriteCa(Fe2+,Mg)(CO3)2
C Synchysite-(Ce)CaCe(CO3)2F
C Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
C Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
C DolomiteCaMg(CO3)2
C Bastnäsite-(Ce)Ce(CO3)F
C Parisite-(Ce)CaCe2(CO3)3F2
OOxygen
O NephelineNa3K(Al4Si4O16)
O Xenotime-(Y)Y(PO4)
O HematiteFe2O3
O MagnetiteFe2+Fe23+O4
O ZirconZr(SiO4)
O CalciteCaCO3
O Limonite(Fe,O,OH,H2O)
O ThoriteTh(SiO4)
O AnkeriteCa(Fe2+,Mg)(CO3)2
O Monazite-(Ce)Ce(PO4)
O Synchysite-(Ce)CaCe(CO3)2F
O Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
O FluorapatiteCa5(PO4)3F
O AlbiteNa(AlSi3O8)
O PhlogopiteKMg3(AlSi3O10)(OH)2
O AegirineNaFe3+Si2O6
O Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
O MicroclineK(AlSi3O8)
O QuartzSiO2
O TitaniteCaTi(SiO4)O
O IlmeniteFe2+TiO3
O Pyrochlore GroupA2Nb2(O,OH)6Z
O RutileTiO2
O ZirconoliteCaZrTi2O7
O Columbite-(Fe)Fe2+Nb2O6
O BaryteBaSO4
O DolomiteCaMg(CO3)2
O Bastnäsite-(Ce)Ce(CO3)F
O Parisite-(Ce)CaCe2(CO3)3F2
O SodaliteNa8(Al6Si6O24)Cl2
O Riebeckite⃞[Na2][Fe32+Fe23+]Si8O22(OH)2
FFluorine
F FluoriteCaF2
F Synchysite-(Ce)CaCe(CO3)2F
F FluorapatiteCa5(PO4)3F
F Bastnäsite-(Ce)Ce(CO3)F
F Parisite-(Ce)CaCe2(CO3)3F2
NaSodium
Na NephelineNa3K(Al4Si4O16)
Na AlbiteNa(AlSi3O8)
Na AegirineNaFe3+Si2O6
Na Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Na Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Na SodaliteNa8(Al6Si6O24)Cl2
Na Riebeckite⃞[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg DolomiteCaMg(CO3)2
AlAluminium
Al NephelineNa3K(Al4Si4O16)
Al AlbiteNa(AlSi3O8)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Al Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al MicroclineK(AlSi3O8)
Al SodaliteNa8(Al6Si6O24)Cl2
SiSilicon
Si NephelineNa3K(Al4Si4O16)
Si ZirconZr(SiO4)
Si ThoriteTh(SiO4)
Si AlbiteNa(AlSi3O8)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si AegirineNaFe3+Si2O6
Si Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si MicroclineK(AlSi3O8)
Si QuartzSiO2
Si TitaniteCaTi(SiO4)O
Si SodaliteNa8(Al6Si6O24)Cl2
Si Riebeckite⃞[Na2][Fe32+Fe23+]Si8O22(OH)2
PPhosphorus
P Xenotime-(Y)Y(PO4)
P Monazite-(Ce)Ce(PO4)
P FluorapatiteCa5(PO4)3F
SSulfur
S Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
S BaryteBaSO4
S PyriteFeS2
ClChlorine
Cl SodaliteNa8(Al6Si6O24)Cl2
KPotassium
K NephelineNa3K(Al4Si4O16)
K PhlogopiteKMg3(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
CaCalcium
Ca FluoriteCaF2
Ca CalciteCaCO3
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca Synchysite-(Ce)CaCe(CO3)2F
Ca Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
Ca FluorapatiteCa5(PO4)3F
Ca Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca TitaniteCaTi(SiO4)O
Ca ZirconoliteCaZrTi2O7
Ca DolomiteCaMg(CO3)2
Ca Parisite-(Ce)CaCe2(CO3)3F2
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
Ti ZirconoliteCaZrTi2O7
MnManganese
Mn Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
FeIron
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe Limonite(Fe,O,OH,H2O)
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe AegirineNaFe3+Si2O6
Fe Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe IlmeniteFe2+TiO3
Fe Columbite-(Fe)Fe2+Nb2O6
Fe PyriteFeS2
Fe Riebeckite⃞[Na2][Fe32+Fe23+]Si8O22(OH)2
YYttrium
Y Xenotime-(Y)Y(PO4)
ZrZirconium
Zr ZirconZr(SiO4)
Zr ZirconoliteCaZrTi2O7
NbNiobium
Nb Pyrochlore GroupA2Nb2(O,OH)6Z
Nb Columbite-(Fe)Fe2+Nb2O6
BaBarium
Ba BaryteBaSO4
CeCerium
Ce Monazite-(Ce)Ce(PO4)
Ce Synchysite-(Ce)CaCe(CO3)2F
Ce Bastnäsite-(Ce)Ce(CO3)F
Ce Parisite-(Ce)CaCe2(CO3)3F2
ThThorium
Th ThoriteTh(SiO4)

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

Neoproterozoic
541 - 1000 Ma



ID: 3190685
Neoproterozoic sedimentary rocks

Age: Neoproterozoic (541 - 1000 Ma)

Stratigraphic Name: Damara Supergroup

Lithology: Sedimentary 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]

Rhyacian
2050 - 2300 Ma



ID: 3311263

Age: Rhyacian (2050 - 2300 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)
Orris, G.J., and Grauch, R.I. (2002): Rare earth element mines, deposits, and occurrences. USGS Open-File Report 02-189.
Wall, F., Niku-Paavola, V.N., Storey, C., Müller, A. & Jeffries, T. (2008) Xenotime-(Y) from carbonatite dykes at Lofdal, Namibia: unusually low LREE:HREE ratio in carbonatite, and first dating of xenotime overgrowths in zircon. Canadian Mineralogist, 46, 861-877.
Bodeving, S. (2015): Petrogenesis of the Lofdal Intrusive Suite: Implications for rare earth elements mineralization. Unpublished M.Sc. thesis, McGill University, Montreal, Quebec, Canada. 202 p.


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