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Nejoio Complex, Camacuio, Namibe Province, Angolai
Regional Level Types
Nejoio ComplexVolcanic Complex
CamacuioMunicipality
Namibe ProvinceProvince
AngolaCountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
13° 50' 40'' South , 13° 25' 26'' East
Latitude & Longitude (decimal):
-13.84458,13.42412
GeoHash:
G#: km991rxjk
GRN:
S10E10
Type:
Volcanic Complex
Köppen climate type:
BSh : Hot semi-arid (steppe) climate
Mindat Locality ID:
405900
Long-form identifier:
mindat:1:2:405900:7
GUID (UUID V4):
a5140606-e5c2-4486-97e8-2fa24f62d01d


Oval-shaped complex of 2 x 1.5 km with an area of fenites up to a kilometre wide extending around the eastern margin; there is a little exposure to the west.
Together with nearby intrusions of Chiuerinde Intrusion, Camacuio, Namibe Province, Angola and Lutala Complex, Camacuio, Namibe Province, Angola, have been referred to as Serra da Neve (Pereira & Moreira 1977).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


18 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘ 'Alkali Feldspar'
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Andradite var. Melanite
Formula: Ca3(Fe3+,Ti)2(SiO4)3
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Cancrinite
Formula: (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ⓘ Catapleiite
Formula: Na2Zr(Si3O9) · 2H2O
ⓘ Eckermannite
Formula: NaNa2(Mg4Al}Si8O22(OH)2
ⓘ Eudialyte
Formula: Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
ⓘ 'Feldspar Group'
ⓘ Fluorite
Formula: CaF2
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ Låvenite
Formula: Na2Ca2Mn2Zr2(Si2O7)2O2F2
ⓘ Magnesio-arfvedsonite
Formula: {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
ⓘ Mosandrite-(Ce)
Formula: (Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ 'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Quartz
Formula: SiO2
ⓘ 'Rhombohedral Carbonate'
Formula: (Ca/Mg/Fe/Mn etc)CO3
ⓘ Rosenbuschite
Formula: Na6Ca6Zr3Ti(Si2O7)4O2F6
ⓘ Sodalite
Formula: Na4(Si3Al3)O12Cl
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘ'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘAndradite
var. Melanite		9.AD.25Ca3(Fe3+,Ti)2(SiO4)3
ⓘ9.AD.25Ca3Fe3+2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘLåvenite9.BE.17Na2Ca2Mn2Zr2(Si2O7)2O2F2
ⓘMosandrite-(Ce)9.BE.20(Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2
ⓘRosenbuschite9.BE.22Na6Ca6Zr3Ti(Si2O7)4O2F6
ⓘCatapleiite9.CA.15Na2Zr(Si3O9) · 2H2O
ⓘEudialyte9.CO.10Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘAegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘMagnesio-arfvedsonite9.DE.25{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
ⓘEckermannite9.DE.25NaNa2(Mg4Al}Si8O22(OH)2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘCancrinite9.FB.05(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ⓘSodalite9.FB.10Na4(Si3Al3)O12Cl
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Alkali Feldspar'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Rhombohedral Carbonate'-(Ca/Mg/Fe/Mn etc)CO3

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Hⓘ CatapleiiteNa2Zr(Si3O9) · 2H2O
Hⓘ EckermanniteNaNa2(Mg4Al}Si8O22(OH)2
Hⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Hⓘ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Hⓘ Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2
Hⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Cⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Oⓘ CatapleiiteNa2Zr(Si3O9) · 2H2O
Oⓘ EckermanniteNaNa2(Mg4Al}Si8O22(OH)2
Oⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Oⓘ LåveniteNa2Ca2Mn2Zr2(Si2O7)2O2F2
Oⓘ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Oⓘ Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Oⓘ QuartzSiO2
Oⓘ RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
Oⓘ SodaliteNa4(Si3Al3)O12Cl
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ ZirconZr(SiO4)
Oⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluoriteCaF2
Fⓘ LåveniteNa2Ca2Mn2Zr2(Si2O7)2O2F2
Fⓘ RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Naⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Naⓘ CatapleiiteNa2Zr(Si3O9) · 2H2O
Naⓘ EckermanniteNaNa2(Mg4Al}Si8O22(OH)2
Naⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Naⓘ LåveniteNa2Ca2Mn2Zr2(Si2O7)2O2F2
Naⓘ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
Naⓘ SodaliteNa4(Si3Al3)O12Cl
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ EckermanniteNaNa2(Mg4Al}Si8O22(OH)2
Mgⓘ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Mgⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
AlAluminium
Alⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Alⓘ EckermanniteNaNa2(Mg4Al}Si8O22(OH)2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ SodaliteNa4(Si3Al3)O12Cl
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Siⓘ CatapleiiteNa2Zr(Si3O9) · 2H2O
Siⓘ EckermanniteNaNa2(Mg4Al}Si8O22(OH)2
Siⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Siⓘ LåveniteNa2Ca2Mn2Zr2(Si2O7)2O2F2
Siⓘ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Siⓘ Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ QuartzSiO2
Siⓘ RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
Siⓘ SodaliteNa4(Si3Al3)O12Cl
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ ZirconZr(SiO4)
Siⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Clⓘ SodaliteNa4(Si3Al3)O12Cl
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Caⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Caⓘ FluoriteCaF2
Caⓘ LåveniteNa2Ca2Mn2Zr2(Si2O7)2O2F2
Caⓘ Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2
Caⓘ RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2
Tiⓘ RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
Tiⓘ TitaniteCaTi(SiO4)O
Tiⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
MnManganese
Mnⓘ LåveniteNa2Ca2Mn2Zr2(Si2O7)2O2F2
Mnⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Feⓘ Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Feⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
Feⓘ Rhombohedral Carbonate(Ca/Mg/Fe/Mn etc)CO3
ZrZirconium
Zrⓘ CatapleiiteNa2Zr(Si3O9) · 2H2O
Zrⓘ EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Zrⓘ LåveniteNa2Ca2Mn2Zr2(Si2O7)2O2F2
Zrⓘ RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Pyrochlore GroupA2Nb2(O,OH)6Z

Geochronology

Mineralization age: Early/Lower Cretaceous : 104.3 ± 0.8 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Mesozoic
  Cretaceous
   Early/Lower Cretaceous
ⓘ Biotite104.3 ± 0.8 Ma
ⓘ Feldspar Group104.3 ± 0.8 Ma

Other Regions, Features and Areas containing this locality

African PlateTectonic Plate

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.

References

Rodrigues, B. (1978) Processos de evolucao magmatica no complexo alcalino do Nejoio. Boletim do Museo e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Universidade de Lisboa: 15.
Allsopp, H.L., Hargraves, R.B. (1985) Rb-Sr ages and palaeomagnetic data for some Angolan alkaline intrusives. Transactions of the Geological Society of South Africa: 88(2): 295-299.
Woolley, A.R. (2001) Alkaline rocks and carbonatites of the world. Part 3: Africa. Geological Society. Natural History Museum, London: 19.
Borst, A.M., Finch, A.A., Nielson, G., Siegfried, P.R., Lopes, E., Eugenio, A. and Bambi, A.C.J.M. (2021) Alkaline magmatism and critical metals in Angola: Field observations and petrography of the Nejoio nepheline syenite complex. Pp. 30–31 in: Geologica Belgica. Africa Museum, Tervuren: DOI: https://doi.org/10.20341/gbcp.vol4
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