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Anhydrite-bearing gneiss occurrences, Rössing Mountains area, Arandis Constituency, Erongo Region, Namibiai
Regional Level Types
Anhydrite-bearing gneiss occurrencesOccurrence
Rössing Mountains areaMassif
Arandis ConstituencyConstituency
Erongo RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
22° South , 14° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
GRN:
S16E10
Type:
Occurrence
Köppen climate type:
BWk : Cold desert climate
Mindat Locality ID:
406640
Long-form identifier:
mindat:1:2:406640:1
GUID (UUID V4):
0


Anhydrite occurs as a primary rock-forming mineral in late-Precambrian gneisses (of the Khan Formation) from the Rössing area.
Located approximately 50 km ENE of Swakopmund.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


7 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Anhydrite
Formula: CaSO4
ⓘ 'Apatite'
Formula: Ca5(PO4)3A
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ 'Calcic garnet'
Formula: Ca3X3+2(SiO4)3
ⓘ Calcite
Formula: CaCO3
ⓘ 'Clinopyroxene Subgroup'
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Hematite
Formula: Fe2O3
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Quartz
Formula: SiO2
ⓘ Titanite
Formula: CaTi(SiO4)O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAnhydrite7.AD.30CaSO4
ⓘGypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘMicrocline9.FA.30K(AlSi3O8)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Apatite'-Ca5(PO4)3A
ⓘ'Calcic garnet'-Ca3X3+2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ GypsumCaSO4 · 2H2O
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ AnhydriteCaSO4
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HematiteFe2O3
Oⓘ MicroclineK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ ApatiteCa5(PO4)3A
Oⓘ Calcic garnetCa3X23+(SiO4)3
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ MicroclineK(AlSi3O8)
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ MicroclineK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Calcic garnetCa3X23+(SiO4)3
PPhosphorus
Pⓘ ApatiteCa5(PO4)3A
SSulfur
Sⓘ AnhydriteCaSO4
Sⓘ GypsumCaSO4 · 2H2O
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MicroclineK(AlSi3O8)
CaCalcium
Caⓘ AnhydriteCaSO4
Caⓘ CalciteCaCO3
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3A
Caⓘ Calcic garnetCa3X23+(SiO4)3
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ HematiteFe2O3

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate
Namibia

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

Nash, C. R. (1972) Primary anhydrite in Precambrian gneisses from the Swakopmund district, South West Africa. Contributions to Mineralogy and Petrology, 36 (1). p.27-32. doi:10.1007/bf00372832
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