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Unnamed pegmatite (dumortierite mine), Etemba Farm 135, Dâures, Erongo Region, Namibiai
Regional Level Types
Unnamed pegmatite (dumortierite mine)- not defined -
Etemba Farm 135Farm
DâuresConstituency
Erongo RegionRegion
NamibiaCountry

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 21° South , 15° East (est.)
Margin of Error:~1km
Köppen climate type:BWh : Hot deserts climate


Granite pegmatite 30 km W from Omaruru. An unnamed and unzoned pegmatite situated in the central region of the farm on the north-western slope of the Zamskuppe hill which is close to the northern boundary of the Erongo Mountain, was mined for ornamental stone.

Regions containing this locality

African PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


9 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

Beryl
Formula: Be3Al2(Si6O18)
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia
Cassiterite
Formula: SnO2
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia
Dumortierite
Formula: (Al,Fe3+)7(SiO4)3(BO3)O3
Reference: Min Rec (2006) 37:361-470
Fluorapatite
Formula: Ca5(PO4)3F
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia
Fluorite
Formula: CaF2
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia
Quartz
Formula: SiO2
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia
Tinsleyite
Formula: KAl2(PO4)2(OH) · 2H2O
Reference: K.Walenta (2002): Tinsleyit von der Farm Etemba bei Omaruru in Namibia; Aufschluss 53, S.118-120 (2002)
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: http://www.mineralienatlas.de/lexikon/index.php/Mineralienportrait/Fluorit/Namibia

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Quartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Tinsleyite8.DH.10KAl2(PO4)2(OH) · 2H2O
Group 9 - Silicates
Beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
Dumortierite9.AJ.10(Al,Fe3+)7(SiO4)3(BO3)O3
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Topaz9.AF.35Al2(SiO4)(F,OH)2

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)3(XO4)2Zq·xH2O
Tinsleyite42.11.6.2KAl2(PO4)2(OH) · 2H2O
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with (BO3)
Dumortierite54.1.2.1(Al,Fe3+)7(SiO4)3(BO3)O3
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Beryl
var: Aquamarine
-Be3Al2Si6O18

List of minerals for each chemical element

HHydrogen
H TinsleyiteKAl2(PO4)2(OH) · 2H2O
H TopazAl2(SiO4)(F,OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Be Beryl (var: Aquamarine)Be3Al2Si6O18
Be BerylBe3Al2(Si6O18)
BBoron
B Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
O TinsleyiteKAl2(PO4)2(OH) · 2H2O
O TopazAl2(SiO4)(F,OH)2
O QuartzSiO2
O Beryl (var: Aquamarine)Be3Al2Si6O18
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O FluorapatiteCa5(PO4)3F
O CassiteriteSnO2
O BerylBe3Al2(Si6O18)
FFluorine
F FluoriteCaF2
F TopazAl2(SiO4)(F,OH)2
F FluorapatiteCa5(PO4)3F
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
Al TinsleyiteKAl2(PO4)2(OH) · 2H2O
Al TopazAl2(SiO4)(F,OH)2
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al BerylBe3Al2(Si6O18)
SiSilicon
Si Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
Si TopazAl2(SiO4)(F,OH)2
Si QuartzSiO2
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si BerylBe3Al2(Si6O18)
PPhosphorus
P TinsleyiteKAl2(PO4)2(OH) · 2H2O
P FluorapatiteCa5(PO4)3F
KPotassium
K TinsleyiteKAl2(PO4)2(OH) · 2H2O
CaCalcium
Ca FluoriteCaF2
Ca FluorapatiteCa5(PO4)3F
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
SnTin
Sn CassiteriteSnO2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Seroka, P., (2001): Fluorit-Daten, Fakten, Weltweite Vorkommen: 6.5.10
Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, (in English).

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