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Helikon II pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibiai
Regional Level Types
Helikon II pegmatiteMine
Okongava Ost Farm 72Farm
Karibib ConstituencyConstituency
Erongo RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
22° 2' 24'' South , 16° 1' 38'' East
Latitude & Longitude (decimal):
-22.04022,16.02736
GRN:
S15E11
Type:
Mine
Köppen climate type:
BWh : Hot deserts climate
Nearest Settlements:
PlacePopulationDistance
Karibib6,898 (2012)23.3km
Otjimbingwe7,677 (2012)36.1km
Usakos9,147 (2012)44.3km
Mindat Locality ID:
107138
Long-form identifier:
mindat:1:2:107138:5
GUID (UUID V4):
0
Other/historical names associated with this locality:
Helikon 2


A granitic rare-element pegmatite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


19 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: 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:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Description: Marble country rock
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Cleavelandite
Formula: Na(AlSi3O8)
ⓘ Amblygonite
Formula: LiAl(PO4)F
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Calcite
Formula: CaCO3
Description: Marble country rock
ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'
ⓘ Columbite-(Mn)
Formula: Mn2+Nb2O6
ⓘ 'Columbite-Tantalite'
ⓘ Dickinsonite-(KMnNa)
Formula: (KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2
ⓘ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Colour: Pale blue
ⓘ Eosphorite
Formula: Mn2+Al(PO4)(OH)2 · H2O
ⓘ 'Feldspar Group'
ⓘ 'Feldspar Group var. Perthite'
ⓘ Hectorite
Formula: Na0.3(Mg,Li)3(Si4O10)(F,OH)2
ⓘ Hureaulite
Formula: Mn2+5(PO3OH)2(PO4)2 · 4H2O
Description: Associated minerals joosteite, lithiophilite, sicklerite, eosphorite, amblygonite, varulite, dickinsonite, apatite and unidentified Fe/Mn oxides.
ⓘ Joosteite (TL)
Formula: Mn2+(Mn3+,Fe3+)(PO4)O
Type Locality:
Fluorescence: none
Description: Associated minerals are lithiophilite, sicklerite, eosphorite, amblygonite, varulite, dickinsonite, hureaulite, apatite and unidentified Fe/Mn oxides. The mineral has been formed by alteration processes at the expense of pegmatitic lithiophilite. Joosteite exhibits a black lustre and occurs as irregular small aggregates up to 3 mm in length.
ⓘ 'Lepidolite'
ⓘ Lithiophilite
Formula: LiMn2+PO4
ⓘ Lithiophilite var. Sicklerite
Formula: Li1-x(Mn3+xMn2+1-x)PO4
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Bismuth
Formula: Bi
ⓘ Petalite
Formula: LiAl(Si4O10)
ⓘ Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
ⓘ Quartz
Formula: SiO2
ⓘ 'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
ⓘ Varulite
Formula: NaCaMn2+Mn2+2(PO4)3
ⓘ 'Wad'
ⓘ 'Zinnwaldite'

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Bismuth1.CA.05Bi
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘColumbite-(Mn)4.DB.35Mn2+Nb2O6
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
ⓘLithiophilite8.AB.10LiMn2+PO4
ⓘvar. Sicklerite8.AB.10Li1-x(Mn3+xMn2+1-x)PO4
ⓘVarulite8.AC.10NaCaMn2+Mn2+2(PO4)3
ⓘAmblygonite8.BB.05LiAl(PO4)F
ⓘJoosteite (TL)8.BB.15Mn2+(Mn3+,Fe3+)(PO4)O
ⓘDickinsonite-(KMnNa)8.BF.05(KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2
ⓘHureaulite8.CB.10Mn2+5(PO3OH)2(PO4)2 · 4H2O
ⓘEosphorite8.DD.20Mn2+Al(PO4)(OH)2 · H2O
Group 9 - Silicates
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘElbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘHectorite9.EC.45Na0.3(Mg,Li)3(Si4O10)(F,OH)2
ⓘPetalite9.EF.05LiAl(Si4O10)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Cleavelandite9.FA.35Na(AlSi3O8)
ⓘPollucite9.GB.05(Cs,Na)2(Al2Si4O12) · 2H2O
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Lepidolite'-
ⓘ'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
ⓘ'Wad'-
ⓘ'Zinnwaldite'-
ⓘ'Feldspar Group
var. Perthite'		-
ⓘ'Columbite-(Fe)-Columbite-(Mn) Series'-
ⓘ'Columbite-Tantalite'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Hⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Hⓘ HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
Hⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Hⓘ Zinnwaldite
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
LiLithium
Liⓘ AmblygoniteLiAl(PO4)F
Liⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Liⓘ HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
Liⓘ LithiophiliteLiMn2+PO4
Liⓘ PetaliteLiAl(Si4O10)
Liⓘ Lithiophilite var. SickleriteLi1-x(Mnx3+Mn2+1-x)PO4
Liⓘ Zinnwaldite
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
BBoron
Bⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AmblygoniteLiAl(PO4)F
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CalciteCaCO3
Oⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Oⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Oⓘ HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
Oⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Oⓘ LithiophiliteLiMn2+PO4
Oⓘ Columbite-(Mn)Mn2+Nb2O6
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PetaliteLiAl(Si4O10)
Oⓘ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Oⓘ QuartzSiO2
Oⓘ Lithiophilite var. SickleriteLi1-x(Mnx3+Mn2+1-x)PO4
Oⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Oⓘ VaruliteNaCaMn2+Mn22+(PO4)3
Oⓘ Zinnwaldite
Oⓘ Albite var. CleavelanditeNa(AlSi3O8)
Oⓘ Columbite-(Fe)-Columbite-(Mn) Series
Oⓘ JoosteiteMn2+(Mn3+,Fe3+)(PO4)O
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ AmblygoniteLiAl(PO4)F
Fⓘ HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
Fⓘ Zinnwaldite
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Naⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
Naⓘ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Naⓘ VaruliteNaCaMn2+Mn22+(PO4)3
Naⓘ Albite var. CleavelanditeNa(AlSi3O8)
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AmblygoniteLiAl(PO4)F
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Alⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ PetaliteLiAl(Si4O10)
Alⓘ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Alⓘ Zinnwaldite
Alⓘ Albite var. CleavelanditeNa(AlSi3O8)
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ PetaliteLiAl(Si4O10)
Siⓘ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
Siⓘ QuartzSiO2
Siⓘ Zinnwaldite
Siⓘ Albite var. CleavelanditeNa(AlSi3O8)
PPhosphorus
Pⓘ AmblygoniteLiAl(PO4)F
Pⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Pⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Pⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Pⓘ LithiophiliteLiMn2+PO4
Pⓘ Lithiophilite var. SickleriteLi1-x(Mnx3+Mn2+1-x)PO4
Pⓘ VaruliteNaCaMn2+Mn22+(PO4)3
Pⓘ JoosteiteMn2+(Mn3+,Fe3+)(PO4)O
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Zinnwaldite
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ CalciteCaCO3
Caⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Caⓘ VaruliteNaCaMn2+Mn22+(PO4)3
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
MnManganese
Mnⓘ Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn132+Al(PO4)11(PO4)(OH)2
Mnⓘ EosphoriteMn2+Al(PO4)(OH)2 · H2O
Mnⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Mnⓘ LithiophiliteLiMn2+PO4
Mnⓘ Columbite-(Mn)Mn2+Nb2O6
Mnⓘ Lithiophilite var. SickleriteLi1-x(Mnx3+Mn2+1-x)PO4
Mnⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Mnⓘ VaruliteNaCaMn2+Mn22+(PO4)3
Mnⓘ Columbite-(Fe)-Columbite-(Mn) Series
Mnⓘ JoosteiteMn2+(Mn3+,Fe3+)(PO4)O
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Feⓘ Zinnwaldite
Feⓘ Columbite-(Fe)-Columbite-(Mn) Series
Feⓘ JoosteiteMn2+(Mn3+,Fe3+)(PO4)O
NbNiobium
Nbⓘ Columbite-(Mn)Mn2+Nb2O6
Nbⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Nbⓘ Columbite-(Fe)-Columbite-(Mn) Series
CsCaesium
Csⓘ Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
TaTantalum
Taⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
BiBismuth
Biⓘ Native BismuthBi

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate

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

Keller, P. (1991) The occurrence of Li-Fe-Mn phosphate minerals in granitic pegmatites of Namibia. Communications of the Geological Survey of Namibia, 7. 21-25
von Bezing, Ludi (2007) Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.
Keller, Paul, Fontan, François, Roldan, Francisco Velasco, de Parseval, Philippe (2007) Joosteite, Mn2+(Mn3+, Fe3+)(PO4)O: a new phosphate mineral from the Helikon II Mine, Karibib, Namibia. Neues Jahrbuch für Mineralogie - Abhandlungen, 183 (2) 197-201 doi:10.1127/0077-7757/2007/0069
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).
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