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Mile 72, Cape Cross area, Arandis, Erongo Region, Namibiai
Regional Level Types
Mile 72- not defined -
Cape Cross areaArea
Arandis- not defined -
Erongo RegionRegion
NamibiaCountry

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Key
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Latitude & Longitude (WGS84): 21° 53' 16'' South , 14° 4' 49'' East
Latitude & Longitude (decimal): -21.88803,14.08050
GeoHash:G#: kk452rmj5
Köppen climate type:BWk : Cold desert climate
Nearest Settlements:
PlacePopulationDistance
Hentiesbaai3,837 (2012)32.9km


Late stage Uis pegmatites. Outcrops directly at the beach. Was famous for jeremejevite. The mine is close to the road marker 72, north of Swakopmund.

Regions containing this locality

African PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.
'Apatite'
Reference: Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.
'Biotite'
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 274 pp. (in English)
Calcite
Formula: CaCO3
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 274 pp. (in English)
'Feldspar Group'
Reference: Dan Weinrich photo
'Feldspar Group var: Perthite'
Reference: Dan Weinrich photo
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 274 pp. (in English)
Fluor-schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3F
Reference: Ertl, A., Kolitsch, U., Dyar, M.D., Meyer, H.-P., Rossman, G.R., Henry, D.J., Prem, M., Ludwig, T., Nasdala, L., Lengauer, C.L., Tillmanns, E. and Niedermayr, G. (2016): Fluor-schorl, a new member of the tourmaline supergroup, and new data on schorl from the cotype localities. Eur. J. Mineral. 28, 163-177.
Foitite
Formula: (□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 585 pp. (in English)
Goethite
Formula: α-Fe3+O(OH)
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 274 pp. (in English)
Grandidierite
Formula: (Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
Reference: Bonardo, L., Fraccaro, G., Ciriotti, M.E., Blass, G., Ambrino, P. (2008). Primo ritrovamento di grandidierite in Namibia. Micro (notizie mineralogiche), 2/2008, 129-131.
Gypsum
Formula: CaSO4 · 2H2O
Reference: Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.
Jeremejevite
Formula: Al6(BO3)5(F,OH)3
Reference: Herting, S. & Strunz, H. (1978): Jeremejewit von Mile 72 in SW-Afrika. Aufschluss, 29, 45-53. (in German); Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.
'Lepidolite'
Reference: Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.
Microcline
Formula: K(AlSi3O8)
Reference: Dan Weinrich photo
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 274 pp. (in English)
Orthoclase ?
Formula: K(AlSi3O8)
Description: Seems to be a mistake for perthitic microcline
Reference: Mineralogical Record (2000): 31: 195.
Quartz
Formula: SiO2
Reference: Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Wilson, W.E. et al. (2002): Jeremejevite from Namibia. Mineralogical Record. 33, 289-301.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 6 - Borates
Jeremejevite6.AB.15Al6(BO3)5(F,OH)3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Fluor-schorl9.CK.Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3F
Foitite9.CK.05(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Grandidierite9.AJ.05(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Orthoclase ?9.FA.30K(AlSi3O8)
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Feldspar Group'-
'var: Perthite'-
'Lepidolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 25 - ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
Miscellaneous
Jeremejevite25.8.1.1Al6(BO3)5(F,OH)3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with (BO3)
Grandidierite54.1.1.1(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Foitite61.3.1.1(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(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)
Orthoclase ?76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Apatite'-
'Biotite'-
'Feldspar Group'-
'var: Perthite'-
Fluor-schorl-Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3F
'Lepidolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H JeremejeviteAl6(BO3)5(F,OH)3
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H GypsumCaSO4 · 2H2O
H Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
H Goethiteα-Fe3+O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
BBoron
B JeremejeviteAl6(BO3)5(F,OH)3
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
B Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
B Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
CCarbon
C CalciteCaCO3
OOxygen
O JeremejeviteAl6(BO3)5(F,OH)3
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
O AlbiteNa(AlSi3O8)
O QuartzSiO2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O GypsumCaSO4 · 2H2O
O MicroclineK(AlSi3O8)
O CalciteCaCO3
O FluorapatiteCa5(PO4)3F
O Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
O Goethiteα-Fe3+O(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
O OrthoclaseK(AlSi3O8)
FFluorine
F JeremejeviteAl6(BO3)5(F,OH)3
F FluorapatiteCa5(PO4)3F
F Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
MgMagnesium
Mg Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
AlAluminium
Al JeremejeviteAl6(BO3)5(F,OH)3
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
Al AlbiteNa(AlSi3O8)
Al MicroclineK(AlSi3O8)
Al Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
Al OrthoclaseK(AlSi3O8)
SiSilicon
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
Si AlbiteNa(AlSi3O8)
Si QuartzSiO2
Si MicroclineK(AlSi3O8)
Si Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
Si OrthoclaseK(AlSi3O8)
PPhosphorus
P FluorapatiteCa5(PO4)3F
SSulfur
S GypsumCaSO4 · 2H2O
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca GypsumCaSO4 · 2H2O
Ca CalciteCaCO3
Ca FluorapatiteCa5(PO4)3F
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
Fe Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
Fe Goethiteα-Fe3+O(OH)
Fe Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F

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

Quaternary
0 - 2.588 Ma



ID: 3310114

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Sedimentary

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Neoproterozoic
541 - 1000 Ma



ID: 3186935
Neoproterozoic sedimentary rocks

Age: Neoproterozoic (541 - 1000 Ma)

Stratigraphic Name: Damara Supergroup

Lithology: Metasedimentary/metavolcanic schist

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]

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)
Herting, S., and Strunz, H., (1978) Jeremejewit von Mile 72 in SW-Afrika. Aufschluss: 29 45-53 (in German).
Wilson, W.E. et al. (2002) Jeremejevite from Namibia. Mineralogical Record: 33 289-301.
Bezing, L. von, Bode, R. & Jahn, S. (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 272-274 (in English).
Bonardo, L., Fraccaro, G., Ciriotti, M.E., Blass, G., Ambrino, P., (2008) Primo ritrovamento di grandidierite in Namibia. Micro (notizie mineralogiche), 2/2008 129-131.


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