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Usakos, Karibib, Erongo Region, Namibiai
Regional Level Types
UsakosTown
KaribibConstituency
Erongo RegionRegion
NamibiaCountry

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Key
Latitude & Longitude (WGS84):
22° 0' South , 15° 36' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


Usakos Pegmatites:
Internal zoning is well developed in most pegmatites and prominent quartz cores are seen in many deposits. It must be stressed, however, that the important tin pegmatites of the Uis swarm as well as some other economic pegmatites are poorly zoned to unzoned. Although quartz cores and core margins are often mineralised, economic minerals are also confined to other pegmatite zones at several localities. Many pegmatites carry an assortment of beryl, columbite-tantalite and/or other Ta-Nb oxides, lepidolite, amblygonite-montebrasite, cassiterite, petalite, gem tourmaline, pollucite, microlite, spodumene, bismuth minerals, and a variety of Li-Fe-Mn and Fe-Mn phosphates and their alteration products.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

39 valid minerals. 1 erroneous literature entry.

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!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86; Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 444 pp. (in English)
Albite
Formula: Na(AlSi3O8)
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Reference: Ernst A. Schnaitmann
Andradite
Formula: Ca3Fe3+2(SiO4)3
Reference: Min Rec 29:140
Andradite var: Demantoid
Formula: Ca3Fe3+2(SiO4)3
Reference: Min Rec 29:140
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Beryl
Formula: Be3Al2(Si6O18)
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Bornite
Formula: Cu5FeS4
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Calcite
Formula: CaCO3
Cassiterite
Formula: SnO2
Reference: Min Rec (2006) 37:361-470
Chalcocite
Formula: Cu2S
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Chalcopyrite
Formula: CuFeS2
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
'Clays'
Reference: Jahn, S. (2010): Blue Beauties - Jeremejewit-Neufund auf der Farm Ameib, Namibia. Mineralien-Welt 21 (4), 31-33.
'Columbite-(Fe)-Columbite-(Mn) Series'
Reference: [www.johnbetts-fineminerals.com]
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Diopside
Formula: CaMgSi2O6
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Dolomite
Formula: CaMg(CO3)2
Reference: von Knorring, Oleg & Clifford, T. N. (1960): On a skarn monazite occurrence from the Namib desert near Usakos, South-West Africa. Mineralogical Magazine 32, 650-653.
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Min Rec (2006) 37:361-470
Fluorite
Formula: CaF2
Foitite ?
Formula: (□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Habit: Thin, long-prismatic.
Colour: black to dark-green
Description: No analytical data of method of analysis given.
Reference: Jahn, S. (2010): Blue Beauties - Jeremejewit-Neufund auf der Farm Ameib, Namibia. Mineralien-Welt 21 (4), 31-33.
Forsterite
Formula: Mg2SiO4
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
'Garnet Group'
Formula: X3Z2(SiO4)3
Goethite
Formula: α-Fe3+O(OH)
Reference: Natural History Museum Vienna collection
Gold
Formula: Au
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86; http://www.mme.gov.na/gsn/pdf/gold.pdf
Hedenbergite
Formula: CaFe2+Si2O6
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
'Hornblende'
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
'Indicolite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: [www.johnbetts-fineminerals.com]
Jeremejevite
Formula: Al6(BO3)5(F,OH)3
Reference: Mineralogical Record (2006): 37: 361-470; Jahn, S. (2010): Blue Beauties - Jeremejewit-Neufund auf der Farm Ameib, Namibia. Mineralien-Welt 21 (4), 31-33.
'Lepidolite'
Reference: Ernst A. Schnaitmann; Ashworth, L. (2014). Mineralised Pegmatites of the Damara Belt, Namibia: Fluid inclusion and geochemical characteristics with implications for post-collisional mineralisation (Doctoral dissertation, Faculty of Science, University of the Witwatersrand).
Linnaeite
Formula: Co2+Co3+2S4
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Magnetite
Formula: Fe2+Fe3+2O4
Microcline
Formula: K(AlSi3O8)
Reference: Min Rec (2006) 37:361-470
'Monazite'
Reference: von Knorring, Oleg & Clifford, T. N. (1960): On a skarn monazite occurrence from the Namib desert near Usakos, South-West Africa. Mineralogical Magazine 32, 650-653.; Natural History Museum Vienna collection.
Monazite-(Ce)
Formula: Ce(PO4)
Description: Crystals to 15cm are found in Dolomite and Calcite, reddish brown and translucent. Due to their low radioactivity they are not metamict.
Reference: Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern: 656 (in English)
Montebrasite
Formula: LiAl(PO4)(OH)
Reference: Ashworth, L. (2014). Mineralised Pegmatites of the Damara Belt, Namibia: Fluid inclusion and geochemical characteristics with implications for post-collisional mineralisation (Doctoral dissertation, Faculty of Science, University of the Witwatersrand).
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Ashworth, L. (2014). Mineralised Pegmatites of the Damara Belt, Namibia: Fluid inclusion and geochemical characteristics with implications for post-collisional mineralisation (Doctoral dissertation, Faculty of Science, University of the Witwatersrand).; Grassi L, Simmons W, Falster A, Webber K (2014) Geochemistry of tourmaline from the Usakos Pegmatite, Namibia. 21 st meeting of the International Mineralogical Association. p 258
Olenite
Formula: Na(Al3)Al6(Si6O18)(BO3)3O3(OH)
Reference: Gunnar Färber
Opal
Formula: SiO2 · nH2O
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
Reference: Paul Keller, The occurrence of Li-Fe-Mn phosphate minerals in granitic.
Purpurite
Formula: Mn3+(PO4)
Quartz
Formula: SiO2
Localities: Reported from at least 6 localities in this region.
Quartz var: Jasper
Reference: Natural History Museum Vienna collection
Quartz var: Smoky Quartz
Formula: SiO2
Rutile
Formula: TiO2
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Sellaite
Formula: MgF2
Reference: www.mineralienatlas.de/lexikon/index.php/Namibia/Erongo%2C%20Region/Karibib%2C%20Kreis/Ebony
Titanite
Formula: CaTi(SiO4)O
Reference: Bürg, G. , Die Nutzbaren Minerallagerstätten von Deutsch-Südwestafrika (1942), p.83-86
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Jahn, S. (2010): Blue Beauties - Jeremejewit-Neufund auf der Farm Ameib, Namibia. Mineralien-Welt 21 (4), 31-33.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Wollastonite
Formula: CaSiO3
Reference: http://www.mme.gov.na/mines/minesandproducts.htm
Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Linnaeite2.DA.05Co2+Co3+2S4
Group 3 - Halides
Fluorite3.AB.25CaF2
Sellaite3.AB.15MgF2
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Group 6 - Borates
Jeremejevite6.AB.15Al6(BO3)5(F,OH)3
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Monazite-(Ce)8.AD.50Ce(PO4)
Montebrasite8.BB.05LiAl(PO4)(OH)
Purpurite ?8.AB.10Mn3+(PO4)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Cleavelandite9.FA.35Na(AlSi3O8)
Andradite9.AD.25Ca3Fe3+2(SiO4)3
var: Demantoid9.AD.25Ca3Fe3+2(SiO4)3
Beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
Cordierite9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
Diopside9.DA.15CaMgSi2O6
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Foitite ?9.CK.05(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Forsterite9.AC.05Mg2SiO4
Hedenbergite9.DA.15CaFe2+Si2O6
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Olenite9.CK.05Na(Al3)Al6(Si6O18)(BO3)3O3(OH)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Pollucite9.GB.05(Cs,Na)2(Al2Si4O12) · 2H2O
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Titanite9.AG.15CaTi(SiO4)O
Topaz9.AF.35Al2(SiO4)(F,OH)2
Wollastonite9.DG.05CaSiO3
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Clays'-
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'Lepidolite'-
'Monazite'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 3:4
Linnaeite2.10.1.1Co2+Co3+2S4
Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Rutile4.4.1.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Sellaite9.2.2.1MgF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 25 - ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
Miscellaneous
Jeremejevite25.8.1.1Al6(BO3)5(F,OH)3
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Purpurite ?38.4.1.2Mn3+(PO4)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Montebrasite41.5.8.2LiAl(PO4)(OH)
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
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
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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 Al substituted rings
Cordierite61.2.1.1(Mg,Fe)2Al3(AlSi5O18)
Six-Membered Rings with borate groups
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Foitite ?61.3.1.1(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Olenite61.3.1.7Na(Al3)Al6(Si6O18)(BO3)3O3(OH)
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Hedenbergite65.1.3a.2CaFe2+Si2O6
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Pollucite77.1.1.2(Cs,Na)2(Al2Si4O12) · 2H2O
Unclassified Minerals, Mixtures, etc.
Albite
var: Cleavelandite
-Na(AlSi3O8)
Andradite
var: Demantoid
-Ca3Fe3+2(SiO4)3
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Beryl
var: Aquamarine
-Be3Al2Si6O18
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Clays'-
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'Lepidolite'-
'Monazite'-
Quartz
var: Jasper
-SiO2
var: Smoky Quartz-SiO2
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H OpalSiO2 · nH2O
H JeremejeviteAl6(BO3)5(F,OH)3
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H ApatiteCa5(PO4)3(Cl/F/OH)
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Goethiteα-Fe3+O(OH)
H TopazAl2(SiO4)(F,OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H MontebrasiteLiAl(PO4)(OH)
H OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)
H Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
H Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
LiLithium
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Li MontebrasiteLiAl(PO4)(OH)
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
BBoron
B JeremejeviteAl6(BO3)5(F,OH)3
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
B OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)
B Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
CCarbon
C CalciteCaCO3
C DolomiteCaMg(CO3)2
OOxygen
O Monazite-(Ce)Ce(PO4)
O BerylBe3Al2(Si6O18)
O OpalSiO2 · nH2O
O JeremejeviteAl6(BO3)5(F,OH)3
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O QuartzSiO2
O IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
O Beryl (var: Aquamarine)Be3Al2Si6O18
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O ApatiteCa5(PO4)3(Cl/F/OH)
O ZirconZr(SiO4)
O HedenbergiteCaFe2+Si2O6
O RutileTiO2
O TitaniteCaTi(SiO4)O
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O MagnetiteFe2+Fe23+O4
O ForsteriteMg2SiO4
O PhlogopiteKMg3(AlSi3O10)(OH)2
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O AlbiteNa(AlSi3O8)
O CalciteCaCO3
O DiopsideCaMgSi2O6
O Garnet GroupX3Z2(SiO4)3
O Goethiteα-Fe3+O(OH)
O DolomiteCaMg(CO3)2
O CassiteriteSnO2
O MicroclineK(AlSi3O8)
O FluorapatiteCa5(PO4)3F
O Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
O TopazAl2(SiO4)(F,OH)2
O Quartz (var: Smoky Quartz)SiO2
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O WollastoniteCaSiO3
O Albite (var: Cleavelandite)Na(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O MontebrasiteLiAl(PO4)(OH)
O OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)
O Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
O AndraditeCa3Fe23+(SiO4)3
O Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
O PurpuriteMn3+(PO4)
FFluorine
F JeremejeviteAl6(BO3)5(F,OH)3
F ApatiteCa5(PO4)3(Cl/F/OH)
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F FluorapatiteCa5(PO4)3F
F TopazAl2(SiO4)(F,OH)2
F FluoriteCaF2
F SellaiteMgF2
NaSodium
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na Albite (var: Cleavelandite)Na(AlSi3O8)
Na OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)
Na Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg ForsteriteMg2SiO4
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg SellaiteMgF2
AlAluminium
Al BerylBe3Al2(Si6O18)
Al JeremejeviteAl6(BO3)5(F,OH)3
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
Al AlbiteNa(AlSi3O8)
Al MicroclineK(AlSi3O8)
Al TopazAl2(SiO4)(F,OH)2
Al Albite (var: Cleavelandite)Na(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al MontebrasiteLiAl(PO4)(OH)
Al OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)
Al Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Al Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
SiSilicon
Si BerylBe3Al2(Si6O18)
Si OpalSiO2 · nH2O
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si QuartzSiO2
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si ZirconZr(SiO4)
Si HedenbergiteCaFe2+Si2O6
Si TitaniteCaTi(SiO4)O
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si ForsteriteMg2SiO4
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si AlbiteNa(AlSi3O8)
Si DiopsideCaMgSi2O6
Si Garnet GroupX3Z2(SiO4)3
Si MicroclineK(AlSi3O8)
Si Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
Si TopazAl2(SiO4)(F,OH)2
Si Quartz (var: Smoky Quartz)SiO2
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si WollastoniteCaSiO3
Si Albite (var: Cleavelandite)Na(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)
Si Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Si AndraditeCa3Fe23+(SiO4)3
Si Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
PPhosphorus
P Monazite-(Ce)Ce(PO4)
P ApatiteCa5(PO4)3(Cl/F/OH)
P FluorapatiteCa5(PO4)3F
P MontebrasiteLiAl(PO4)(OH)
P PurpuriteMn3+(PO4)
SSulfur
S LinnaeiteCo2+Co23+S4
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S AcanthiteAg2S
S ChalcociteCu2S
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca HedenbergiteCaFe2+Si2O6
Ca TitaniteCaTi(SiO4)O
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca FluorapatiteCa5(PO4)3F
Ca Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
Ca WollastoniteCaSiO3
Ca FluoriteCaF2
Ca AndraditeCa3Fe23+(SiO4)3
TiTitanium
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
MnManganese
Mn PurpuriteMn3+(PO4)
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe HedenbergiteCaFe2+Si2O6
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe MagnetiteFe2+Fe23+O4
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
Fe AndraditeCa3Fe23+(SiO4)3
Fe Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
CoCobalt
Co LinnaeiteCo2+Co23+S4
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
ZrZirconium
Zr ZirconZr(SiO4)
AgSilver
Ag AcanthiteAg2S
SnTin
Sn CassiteriteSnO2
CsCaesium
Cs Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
CeCerium
Ce Monazite-(Ce)Ce(PO4)
AuGold
Au GoldAu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Keller, P. (1991): The occurrence of Li-Fe-Mn phosphate minerals in granitic pegmatites of Namibia. Comm. Geol. Surv. Namibia, 7, 21-35.
Keller, P. (1974). Phosphatmineralien aus Pegmatiten Südwestafrikas. Aufschluss, 25, 577-591.Keller, P. 1980a. Giniit, Fe2+ Fe43+ (H2O)2(OH)2(PO4)4,ein neues Mineral aus dem Pegmatit von Sandamabbei Usakos, Namibia. Neues Jb. Mineral. Mh., 49-56.
Keller, P. (1980). Giniit, Fe2+ Fe3+ (H2O)2(OH)2(PO4)4, neue kristallographische Daten. Neues Jb. Miner. Mh., 561-563.
Keller, P. (1985). Neue Mineralfunde aus dem Pegmatit von Sandamab, SWA/Namibia. Aufschluss, 36, 117-119.
Keller, P. (1987). Skelettkristalle von Phosphaten aus Pegmatiten Namibias und der Black Hills, U.S.A. Fortschr. Miner., 65, 85 pp.
Keller, P. (1988). Dendritic phosphate minerals and their paragenetic relation to the silicate minerals of pegmatites from Namibia and from the Black Hills, South Dakota, U.S.A. Neues Jb. Miner. Abh., 159, 249-281.
Keller, P. and von Knorring, O. (1985). Phosphatminerale von Pegmatiten der Farm Okatjimukuju, Karibib, Namibia. Fortschr. Miner., 63, 110 pp.
Keller, P. and von Knorring, O. (1989). Pegmatites at the Okatjimukuju farm, Karibib, Namibia. Part I: Phosphate mineral associations of the Clementine II pegmatite. European Journal of Mineralogy, 1, 567-593.
Ashworth, L. 2014. Mineralised pegmatites of the Damara Belt, Namibia: fluid inclusion and geochemical characteristics with implications for post-collisional mineralization. PhD dissertation, University of the Witwatersrand, Johannesburg, South Africa.
Nel, H.J. 1946. Petalite and amblygonite from Karibib, South West Africa. American Mineralogist 31:51-57.
Blass, G. and A. Wittern. 1994. Neue mineralien von der Rubikon mine bei Karibib, Namibia. Mineralien Welt 5(3):25-31.

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Wikipedia:https://en.wikipedia.org/wiki/Usakos
Wikidata ID:Q1457265

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