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Ais (Ais Dome), Dâures Constituency, Erongo Region, Namibiai
Regional Level Types
Ais (Ais Dome)Dome
Dâures ConstituencyConstituency
Erongo RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
20° 55' 25'' South , 15° 2' 10'' East
Latitude & Longitude (decimal):
-20.92386,15.03618
GeoHash:
G#:kk68ynvj8
GRN:
S14E10
Type:
Dome
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
187283
Long-form identifier:
mindat:1:2:187283:8
GUID (UUID V4):
0
Name(s) in local language(s):
(Otjihorongo Reserve)


Calc silicate minerals near Ais (settlement) and Ais (granitic dome). Located 35km north of Uis. Previously recorded as near Otjihorongo (216 km away)
Note: 'Otjihorongo Reserve' is an older name for Otjihorongo area.

The dome consists of volcanic metarhyolites and ignimbrites of the Naupoort Formation which are overlain by biotite schists, calc silicates and marbles of the Okotjize and Orusewa Formations. The periphery of the dome is intruded by granite that contains mega-xenoliths of the country rock and these xenoliths are host to the stratabound scheelite-skarn mineralisation. ( Bezing, L. von, 2008)

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Detailed Mineral List:

ⓘActinolite
Formula:◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ'Apatite' ?
Formula:Ca5(PO4)3(Cl/F/OH)
ⓘCalcite
Formula:CaCO3
ⓘClinozoisite
Formula:(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
ⓘDiopside
Formula:CaMgSi2O6
ⓘFluorite
Formula:CaF2
ⓘGoethite
Formula:Fe3+O(OH)
ⓘGrossular
Formula:Ca3Al2(SiO4)3
ⓘMeionite
Formula:Ca4Al6Si6O24CO3
ⓘMuscovite
Formula:KAl2(AlSi3O10)(OH)2
ⓘMuscovite var. Sericite
Formula:KAl2(AlSi3O10)(OH)2
ⓘ'Plagioclase' ?
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
ⓘQuartz
Formula:SiO2
ⓘ'Scapolite'
ⓘScheelite
Formula:Ca(WO4)
ⓘTitanite
Formula:CaTi(SiO4)O
ⓘTremolite
Formula:◻Ca2Mg5(Si8O22)(OH)2
✪Vesuvianite
Formula:Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Description: Brown crystals as large as 8cm enclosed in Calcite, so far these are the best crystals found in Namibia.
ⓘWollastonite
Formula:Ca3(Si3O9)
ⓘZircon
Formula:Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘScheelite7.GA.05Ca(WO4)
Group 9 - Silicates
ⓘGrossular9.AD.25Ca3Al2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘClinozoisite9.BG.05a(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
ⓘVesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘDiopside9.DA.15CaMgSi2O6
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMeionite9.FB.15Ca4Al6Si6O24CO3
Unclassified
ⓘ'Scapolite'-
ⓘ'Plagioclase' ?-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Apatite' ?-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
HⓘActinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
HⓘClinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
HⓘGoethiteFe3+O(OH)
HⓘMuscoviteKAl2(AlSi3O10)(OH)2
HⓘTremolite◻Ca2Mg5(Si8O22)(OH)2
HⓘVesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
HⓘMuscovite var.SericiteKAl2(AlSi3O10)(OH)2
HⓘApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
CⓘCalciteCaCO3
CⓘMeioniteCa4Al6Si6O24CO3
OOxygen
OⓘActinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
OⓘCalciteCaCO3
OⓘClinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
OⓘDiopsideCaMgSi2O6
OⓘGoethiteFe3+O(OH)
OⓘGrossularCa3Al2(SiO4)3
OⓘMeioniteCa4Al6Si6O24CO3
OⓘMuscoviteKAl2(AlSi3O10)(OH)2
OⓘQuartzSiO2
OⓘScheeliteCa(WO4)
OⓘTitaniteCaTi(SiO4)O
OⓘTremolite◻Ca2Mg5(Si8O22)(OH)2
OⓘVesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
OⓘWollastoniteCa3(Si3O9)
OⓘZirconZr(SiO4)
OⓘMuscovite var.SericiteKAl2(AlSi3O10)(OH)2
OⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
OⓘApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
FⓘFluoriteCaF2
FⓘApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
NaⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
MgⓘActinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
MgⓘDiopsideCaMgSi2O6
MgⓘTremolite◻Ca2Mg5(Si8O22)(OH)2
MgⓘVesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
AlAluminium
AlⓘClinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
AlⓘGrossularCa3Al2(SiO4)3
AlⓘMeioniteCa4Al6Si6O24CO3
AlⓘMuscoviteKAl2(AlSi3O10)(OH)2
AlⓘVesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
AlⓘMuscovite var.SericiteKAl2(AlSi3O10)(OH)2
AlⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
SiⓘActinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
SiⓘClinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
SiⓘDiopsideCaMgSi2O6
SiⓘGrossularCa3Al2(SiO4)3
SiⓘMeioniteCa4Al6Si6O24CO3
SiⓘMuscoviteKAl2(AlSi3O10)(OH)2
SiⓘQuartzSiO2
SiⓘTitaniteCaTi(SiO4)O
SiⓘTremolite◻Ca2Mg5(Si8O22)(OH)2
SiⓘVesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
SiⓘWollastoniteCa3(Si3O9)
SiⓘZirconZr(SiO4)
SiⓘMuscovite var.SericiteKAl2(AlSi3O10)(OH)2
SiⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
PPhosphorus
PⓘApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
ClⓘApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
KⓘMuscoviteKAl2(AlSi3O10)(OH)2
KⓘMuscovite var.SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
CaⓘActinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
CaⓘCalciteCaCO3
CaⓘClinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
CaⓘDiopsideCaMgSi2O6
CaⓘFluoriteCaF2
CaⓘGrossularCa3Al2(SiO4)3
CaⓘMeioniteCa4Al6Si6O24CO3
CaⓘScheeliteCa(WO4)
CaⓘTitaniteCaTi(SiO4)O
CaⓘTremolite◻Ca2Mg5(Si8O22)(OH)2
CaⓘVesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
CaⓘWollastoniteCa3(Si3O9)
CaⓘPlagioclase(Na,Ca)[(Si,Al)AlSi2]O8
CaⓘApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
TiⓘTitaniteCaTi(SiO4)O
FeIron
FeⓘActinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
FeⓘGoethiteFe3+O(OH)
FeⓘVesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ZrZirconium
ZrⓘZirconZr(SiO4)
WTungsten
WⓘScheeliteCa(WO4)

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate

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References

von Bezing, Ludi (2007)Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.pp.256-257
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