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Otjua Mine, Otjua Farm 37, Karibib, Erongo Region, Namibiai
Regional Level Types
Otjua MineMine
Otjua Farm 37Farm
KaribibConstituency
Erongo RegionRegion
NamibiaCountry

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Key
Latitude & Longitude (WGS84):
22° 7' 47'' South , 16° 6' 41'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Otjimbingwe7,677 (2012)24.6km
Karibib6,898 (2012)36.0km


A complex granitic pegmatite known primarily for its production of polychrome elbaite tourmaline.

The mine is owned by Hoanib Exploration.

Note: This locality is not in the Kunene Region. It should not be confused with the Otjua tungsten deposit.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: No reference listed
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Amblygonite
Formula: LiAl(PO4)F
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, pp. 413-415 (in English)
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, pp. 413-415 (in English)
Beryl
Formula: Be3Al2(Si6O18)
Bismuth
Formula: Bi
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, pp. 413-415 (in English)
'Columbite-Tantalite'
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, pp. 413-415 (in English)
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: Prismatic
Colour: Blue, green, pink to red.
Description: Considered to be the best specimens of pocket tourmaline from Namibian pegmatites. Lots of crystals were badly fractured, commonly seen was green, dark green or blue-black rinds and red to pink cores but said to lack lustre. Large crystals up to 30cm. Uncertain if these crystals are (at least in part) fluor-elbaite (compare fluor-elbaite entry).
Reference: Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 529 (in English).
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, pp. 413-415 (in English)
Fluor-elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Reference: G. Niedermayr & A. Ertl (unpublished crystal-structure refinement and SEM-EDS analysis, 2015)
'Indicolite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Stefan Koch
'Lepidolite'
Description: From Becker pegmatite associated with elbaite and purple apatite.
Reference: Bezing, L. von., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 639 (in English);
Monazite-(Ce)
Formula: Ce(PO4)
Description: Becker's pegmatite crystals to 4mm.
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern: 657 (in English)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Quartz
Formula: SiO2
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, pp. 413-415 (in English)
Quartz var: Smoky Quartz
Formula: SiO2
Reference: http://www.mme.gov.na/mines/minesandproducts.htm
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, pp. 413-415 (in English)
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: http://www.mme.gov.na/mines/minesandproducts.htm
'Tourmaline var: Achroite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Rob Lavinsky photo
'Tourmaline var: Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Rob Lavinsky photo
'Tourmaline var: Watermelon Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Rob Lavinsky photo

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Group 8 - Phosphates, Arsenates and Vanadates
Amblygonite8.BB.05LiAl(PO4)F
Fluorapatite8.BN.05Ca5(PO4)3F
Monazite-(Ce)8.AD.50Ce(PO4)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Cleavelandite9.FA.35Na(AlSi3O8)
Beryl9.CJ.05Be3Al2(Si6O18)
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Fluor-elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
'Columbite-Tantalite'-
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'Lepidolite'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Achroite'-A(D3)G6(T6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z
'var: Watermelon Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Amblygonite41.5.8.1LiAl(PO4)F
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
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
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
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)
Unclassified Minerals, Mixtures, etc.
var: Cleavelandite-Na(AlSi3O8)
'Columbite-Tantalite'-
Fluor-elbaite-Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'Lepidolite'-
Quartz
var: Smoky Quartz
-SiO2
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Achroite'-A(D3)G6(T6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z
'var: Watermelon Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
LiLithium
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Li AmblygoniteLiAl(PO4)F
Li Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
B Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
B IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
B Tourmaline (var: Achroite)A(D3)G6(T6O18)(BO3)3X3Z
B Tourmaline (var: Watermelon Tourmaline)A(D3)G6(T6O18)(BO3)3X3Z
B Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
OOxygen
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O AlbiteNa(AlSi3O8)
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Albite (var: Cleavelandite)Na(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O BerylBe3Al2(Si6O18)
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O Quartz (var: Smoky Quartz)SiO2
O AmblygoniteLiAl(PO4)F
O AnkeriteCa(Fe2+,Mg)(CO3)2
O FluorapatiteCa5(PO4)3F
O Monazite-(Ce)Ce(PO4)
O QuartzSiO2
O Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
O IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
O Tourmaline (var: Achroite)A(D3)G6(T6O18)(BO3)3X3Z
O Tourmaline (var: Watermelon Tourmaline)A(D3)G6(T6O18)(BO3)3X3Z
O Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
FFluorine
F AmblygoniteLiAl(PO4)F
F FluorapatiteCa5(PO4)3F
F Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
NaSodium
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Albite (var: Cleavelandite)Na(AlSi3O8)
Na Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al AlbiteNa(AlSi3O8)
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Albite (var: Cleavelandite)Na(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al BerylBe3Al2(Si6O18)
Al AmblygoniteLiAl(PO4)F
Al Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
SiSilicon
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si AlbiteNa(AlSi3O8)
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Albite (var: Cleavelandite)Na(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si BerylBe3Al2(Si6O18)
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si Quartz (var: Smoky Quartz)SiO2
Si QuartzSiO2
Si Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
PPhosphorus
P AmblygoniteLiAl(PO4)F
P FluorapatiteCa5(PO4)3F
P Monazite-(Ce)Ce(PO4)
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca FluorapatiteCa5(PO4)3F
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
CeCerium
Ce Monazite-(Ce)Ce(PO4)
BiBismuth
Bi BismuthBi

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Von Bezing, L., Bode, R., and Jahn, S., (2008) Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern. 529 (in English).

External Links


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