Karibib Constituency, Erongo Region, Namibia (original) (raw)

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).

ⓘ Elbaite var. Siberite

Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)

ⓘ Eosphorite

Formula: Mn2+Al(PO4)(OH)2 · H2O

Localities:

Etiro pegmatite, Etiro Farm 50, Karibib Constituency, Erongo Region, Namibia
Clementine II pegmatite, Okatjimukuju Farm 55 (Friedrichsfelde Farm), Karibib Constituency, Erongo Region, Namibia
Helikon II pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
Cameroon pegmatite, Goabeb Farm 63, Karibib Constituency, Erongo Region, Namibia
Brockmann's pegmatite, Tsaobismund Farm 85, Karibib Constituency, Erongo Region, Namibia

ⓘ Epidote

Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)

ⓘ Ernstite (TL)

Formula: (Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2O

Type Locality:

Description: The way this mineral is described, it is a ferrian variety of eosphorite where the Mn>Fe.

ⓘ Eylettersite

Formula: Th0.75Al3(PO4)2(OH)6

ⓘ 'Feldspar Group'

Localities: Reported from at least 8 localities in this region.

Description: Has been identified as either Microcline or Orthoclase and where id has not been established is known as K-feldspar or potassium feldspar (von Bezing).

ⓘ 'Feldspar Group var. Perthite'

Localities: Reported from at least 6 localities in this region.

ⓘ Ferberite

Formula: FeWO4

Localities:

Carsie pegmatite, Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Davib Mine, Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia

ⓘ Ferrimolybdite

Formula: Fe2(MoO4)3 · nH2O

ⓘ 'Ferrisicklerite-Sicklerite Series'

ⓘ Ferrowyllieite

Formula: (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3

ⓘ Fluocerite-(Ce)

Formula: CeF3

ⓘ Fluorapatite

Formula: Ca5(PO4)3F

Localities: Reported from at least 10 localities in this region.

ⓘ Fluorapatite var. Manganese-bearing Fluorapatite

Formula: (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH)

ⓘ Fluor-elbaite

Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F

ⓘ Fluorite

Formula: CaF2

Localities: Reported from at least 14 localities in this region.

ⓘ Fluor-schorl

Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3F

ⓘ Foitite

Formula: ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)

Localities:

Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Ameib Farm 60, Usakos, Karibib Constituency, Erongo Region, Namibia ? (more information)

Description: Note: reported "foitite" in Jahn & Bode (2003) is not based on reliable analyses.

ⓘ Forsterite

Formula: Mg2SiO4

ⓘ Frondelite

Formula: Mn2+Fe3+4(PO4)3(OH)5

ⓘ Gahnite

Formula: ZnAl2O4

ⓘ Galena

Formula: PbS

ⓘ 'Garnet Group'

Formula: X3Z2(SiO4)3

Localities: Reported from at least 6 localities in this region.

ⓘ Goethite

Formula: α-Fe3+O(OH)

ⓘ Gold

Formula: Au

Localities: Reported from at least 9 localities in this region.

ⓘ Gormanite

Formula: (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O

Description: Replaces muscovite flakes in alluaudite.

ⓘ Goyazite

Formula: SrAl3(PO4)(PO3OH)(OH)6

ⓘ Graftonite

Formula: Fe2+Fe2+2(PO4)2

Localities:

Brockmann's pegmatite, Tsaobismund Farm 85, Karibib Constituency, Erongo Region, Namibia
Henckert's pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
No. 1 pegmatite, Abbabis Farm 70, Karibib Constituency, Erongo Region, Namibia

ⓘ Graphite

Formula: C

References:

ⓘ Grayite

Formula: (Th,Pb,Ca)(PO4) · H2O

ⓘ Grossular

Formula: Ca3Al2(SiO4)3

ⓘ Hagendorfite

Formula: NaCaMn2+Fe2+2(PO4)3

Description: Resembles alluaudite.

ⓘ Haiweeite

Formula: Ca(UO2)2[Si5O12(OH)2] · 6H2O

ⓘ Hectorite

Formula: Na0.3(Mg,Li)3(Si4O10)(F,OH)2

ⓘ Hedenbergite

Formula: CaFe2+Si2O6

ⓘ Hematite

Formula: Fe2O3

Localities:

Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Wendroth's workings, Erongorus Farm 166, Karibib Constituency, Erongo Region, Namibia
Van der Made pegmatite, Schlucht Farm 162, Karibib Constituency, Erongo Region, Namibia
Lattice quartz occurrence ('Gitterquarz-Fundstelle'), Karibib Constituency, Erongo Region, Namibia

ⓘ Herderite

Formula: CaBe(PO4)F

ⓘ Heterosite

Formula: (Fe3+,Mn3+)PO4

Localities: Reported from at least 34 localities in this region.

ⓘ 'Heterosite-Purpurite Series'

ⓘ 'Hornblende Root Name Group'

Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2

ⓘ Hureaulite

Formula: Mn2+5(PO3OH)2(PO4)2 · 4H2O

Localities: Reported from at least 7 localities in this region.

ⓘ Hydroxylapatite

Formula: Ca5(PO4)3(OH)

ⓘ Hydroxylherderite

Formula: CaBe(PO4)(OH)

ⓘ Ilmenite

Formula: Fe2+TiO3

ⓘ 'Indicolite'

Formula: A(D3)G6(T6O18)(BO3)3X3Z

Localities:

Usakos, Karibib Constituency, Erongo Region, Namibia
Neuschwaben Farm 73 (Neu Schwaben), Karibib Constituency, Erongo Region, Namibia
Otjua Mine, Otjua Farm 37, Karibib Constituency, Erongo Region, Namibia

ⓘ 'Jahnsite Group'

Formula: XM1M22M32(H2O)8(OH)2(PO4)4

ⓘ Jarosite

Formula: KFe3+3(SO4)2(OH)6

ⓘ Jeremejevite

Formula: Al6(BO3)5(F,OH)3

ⓘ 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.

References:

ⓘ Karibibite (TL)

Formula: Fe3+3(As3+O2)4(As3+2O5)(OH)

Type Locality:

ⓘ Kettnerite

Formula: CaBiCO3OF

ⓘ 'K Feldspar'

Localities:

Lattice quartz occurrence ('Gitterquarz-Fundstelle'), Karibib Constituency, Erongo Region, Namibia
Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia
Jooste's pegmatite, Etiro Farm 50, Karibib Constituency, Erongo Region, Namibia
Valencia deposit, Karibib Constituency, Erongo Region, Namibia
Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia

ⓘ Kidwellite

Formula: NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33

ⓘ Kryzhanovskite

Formula: (Fe3+,Mn2+)3(PO4)2(OH,H2O)3

Localities: Reported from at least 7 localities in this region.

ⓘ Landesite

Formula: Mn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2O

Colour: Reddish brown

Description: Occurs as grains with deep blue flakes of vivianite as an alteration product of alluaudite.

ⓘ Laueite

Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O

ⓘ Lazulite

Formula: MgAl2(PO4)2(OH)2

Localities:

No. 1 pegmatite, Abbabis Farm 70, Karibib Constituency, Erongo Region, Namibia
Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Dernburg pegmatite, Karibib Townlands Farm 57, Karibib Constituency, Erongo Region, Namibia

Colour: Blue

ⓘ Leucophosphite

Formula: KFe3+2(PO4)2(OH) · 2H2O

ⓘ Liebigite

Formula: Ca2(UO2)(CO3)3 · 11H2O

ⓘ 'Limonite'

ⓘ Lindströmite

Formula: Pb3Cu3Bi7S15

ⓘ Linnaeite

Formula: Co2+Co3+2S4

ⓘ Lipscombite

Formula: Fe2+Fe3+2(PO4)2(OH)2

ⓘ Lithiophilite

Formula: LiMn2+PO4

Localities: Reported from at least 8 localities in this region.

ⓘ Lithiophilite var. Sicklerite

Formula: Li1-x(Mn3+xMn2+1-x)PO4

Localities: Reported from at least 9 localities in this region.

ⓘ 'Lithiophilite-Triphylite Series'

ⓘ Löllingite

Formula: FeAs2

ⓘ Magnetite

Formula: Fe2+Fe3+2O4

Localities:

Henderson Mine (Anderson Mine), Naob Farm 69, Usakos, Karibib Constituency, Erongo Region, Namibia
Clementine II pegmatite, Okatjimukuju Farm 55 (Friedrichsfelde Farm), Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Valencia deposit, Karibib Constituency, Erongo Region, Namibia

ⓘ Maldonite

Formula: Au2Bi

References:

ⓘ 'Manganese Oxides'

References:

Broccardo, L., Kinnaird, J. A., & Nex, P. A. M. (2011). Preliminary fluid inclusion results from the Rubicon pegmatite, Karibib, Namibia. Asociación Geológica Argentina, Serie D, publicación especial No, 14, 45-48.

ⓘ Meta-autunite

Formula: Ca(UO2)2(PO4)2 · 6H2O

ⓘ Metanováčekite

Formula: Mg(UO2)2(AsO4)2 · 8H2O

ⓘ Metatorbernite

Formula: Cu(UO2)2(PO4)2 · 8H2O

ⓘ Metazeunerite

Formula: Cu(UO2)2(AsO4)2 · 8H2O

ⓘ 'Mica Group'

ⓘ Microcline

Formula: K(AlSi3O8)

Localities: Reported from at least 10 localities in this region.

Description: Has been identified as either Microcline or Orthoclase and where id has not been established is known as K-feldspar or potassium feldspar (von Bezing).

ⓘ 'Microlite Group'

Formula: A2-mTa2X6-wZ-n

Localities:

Clementine II pegmatite, Okatjimukuju Farm 55 (Friedrichsfelde Farm), Karibib Constituency, Erongo Region, Namibia
Neuschwaben Farm 73 (Neu Schwaben), Karibib Constituency, Erongo Region, Namibia
Rubikon Mine, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia

ⓘ Mimetite

Formula: Pb5(AsO4)3Cl

ⓘ Mitridatite

Formula: Ca2Fe3+3(PO4)3O2 · 3H2O

ⓘ Molybdenite

Formula: MoS2

Localities:

Carsie pegmatite, Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Twin Hills prospects, Karibib Constituency, Erongo Region, Namibia

ⓘ Monazite-(Ce)

Formula: Ce(PO4)

Localities:

Otjua Mine, Otjua Farm 37, Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Jooste's pegmatite, Etiro Farm 50, Karibib Constituency, Erongo Region, Namibia
Erongorus Farm 166, Karibib Constituency, Erongo Region, Namibia

Description: Becker's pegmatite crystals to 4mm.

ⓘ 'Monazite Group'

Formula: REE(PO4)

ⓘ Montebrasite

Formula: LiAl(PO4)(OH)

ⓘ Montmorillonite

Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O

ⓘ Morinite

Formula: NaCa2Al2(PO4)2(OH)F4 · 2H2O

ⓘ Mottramite

Formula: PbCu(VO4)(OH)

ⓘ Muscovite

Formula: KAl2(AlSi3O10)(OH)2

Localities: Reported from at least 18 localities in this region.

ⓘ Muscovite var. Sericite

Formula: KAl2(AlSi3O10)(OH)2

ⓘ Nontronite

Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O

ⓘ Olenite

Formula: NaAl3Al6(Si6O18)(BO3)3O3(OH)

ⓘ Opal

Formula: SiO2 · nH2O

Localities:

Ameib Farm 60, Usakos, Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Lattice quartz occurrence ('Gitterquarz-Fundstelle'), Karibib Constituency, Erongo Region, Namibia

Description: Hyalite

ⓘ Opal var. Opal-AN

Formula: SiO2 · nH2O

ⓘ Orthoclase

Formula: K(AlSi3O8)

Localities:

Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Lattice quartz occurrence ('Gitterquarz-Fundstelle'), Karibib Constituency, Erongo Region, Namibia
No. 1 pegmatite, Abbabis Farm 70, Karibib Constituency, Erongo Region, Namibia

Description: Has been identified as either Microcline or Orthoclase and where id has not been established is known as K-feldspar or potassium feldspar (von Bezing).

ⓘ Parauranophane

Formula: Ca(UO2)2(SiO3OH)2 · 5H2O

ⓘ Petalite

Formula: LiAl(Si4O10)

Localities: Reported from at least 10 localities in this region.

ⓘ Phenakite

Formula: Be2SiO4

ⓘ Phlogopite

Formula: KMg3(AlSi3O10)(OH)2

ⓘ Phosphosiderite

Formula: FePO4 · 2H2O

Localities:

Clementine II pegmatite, Okatjimukuju Farm 55 (Friedrichsfelde Farm), Karibib Constituency, Erongo Region, Namibia
Rubikon Mine, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
No. 1 pegmatite, Abbabis Farm 70, Karibib Constituency, Erongo Region, Namibia

ⓘ Phosphuranylite

Formula: KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O

ⓘ Phurcalite

Formula: Ca2(UO2)3(PO4)2O2 · 7H2O

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi2]O8

ⓘ Pollucite

Formula: (Cs,Na)2(Al2Si4O12) · 2H2O

Localities: Reported from at least 6 localities in this region.

ⓘ 'Polylithionite-Trilithionite Series'

Localities: Reported from at least 19 localities in this region.

Description: From Becker pegmatite associated with elbaite and purple apatite.

ⓘ Pseudomalachite

Formula: Cu5(PO4)2(OH)4

ⓘ Pucherite

Formula: Bi(VO4)

ⓘ Purpurite

Formula: Mn3+(PO4)

Localities:

Cameroon pegmatite, Goabeb Farm 63, Karibib Constituency, Erongo Region, Namibia
Clementine II pegmatite, Okatjimukuju Farm 55 (Friedrichsfelde Farm), Karibib Constituency, Erongo Region, Namibia
Rubikon 3 Pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia

~~Ameib Farm 60, Usakos, Karibib Constituency, Erongo Region, Namibia~~

(more information)

ⓘ Pyrite

Formula: FeS2

Localities:

Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia
No. 1 pegmatite, Abbabis Farm 70, Karibib Constituency, Erongo Region, Namibia
Twin Hills prospects, Karibib Constituency, Erongo Region, Namibia

ⓘ 'Pyrochlore Supergroup'

Formula: A2-mD2X6-wZ1-n

ⓘ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'

Formula: (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)

ⓘ Pyrolusite

Formula: Mn4+O2

ⓘ Pyromorphite

Formula: Pb5(PO4)3Cl

ⓘ Pyrrhotite

Formula: Fe1-xS

ⓘ Quartz

Formula: SiO2

Localities: Reported from at least 33 localities in this region.

ⓘ Quartz var. Amethyst

Formula: SiO2

ⓘ Quartz var. Chalcedony

Formula: SiO2

ⓘ Quartz var. Citrine

Formula: SiO2

ⓘ Quartz var. Rose Quartz

Formula: SiO2

ⓘ Quartz var. Sceptre Quartz

Formula: SiO2

ⓘ Quartz var. Smoky Quartz

Formula: SiO2

Localities: Reported from at least 8 localities in this region.

ⓘ Raspite

Formula: Pb(WO4)

Habit: Prismatic

Description: Found in vugs in granite

ⓘ Rhodochrosite

Formula: MnCO3

ⓘ Robertsite

Formula: Ca2Mn3+3(PO4)3O2 · 3H2O

ⓘ Rockbridgeite

Formula: Fe2+Fe3+4(PO4)3(OH)5

ⓘ Russellite

Formula: Bi2WO6

ⓘ Rutile

Formula: TiO2

Localities:

Henderson Mine (Anderson Mine), Naob Farm 69, Usakos, Karibib Constituency, Erongo Region, Namibia
Rubikon Mine, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia
Twin Hills prospects, Karibib Constituency, Erongo Region, Namibia

ⓘ Sampleite

Formula: NaCaCu5(PO4)4Cl · 5H2O

ⓘ Sarcopside

Formula: Fe2+3(PO4)2

Localities:

Tsaobismund pegmatite, Tsaobismund Farm 85, Karibib Constituency, Erongo Region, Namibia
Brockmann's pegmatite, Tsaobismund Farm 85, Karibib Constituency, Erongo Region, Namibia
No. 1 pegmatite, Abbabis Farm 70, Karibib Constituency, Erongo Region, Namibia

ⓘ Scheelite

Formula: Ca(WO4)

Localities:

Pot Mine, Kanadipmund Farm 83, Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia
Schonfeld tungsten skarn prospect, Karibib Constituency, Erongo Region, Namibia
Roidina tungsten skarn prospect, Karibib Constituency, Erongo Region, Namibia

ⓘ Schneiderhöhnite

Formula: Fe2+Fe3+3As3+5O13

ⓘ Schorl

Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Localities: Reported from at least 19 localities in this region.

ⓘ Scorzalite

Formula: Fe2+Al2(PO4)2(OH)2

ⓘ Segnitite

Formula: PbFe3+3AsO4(AsO3OH)(OH)6

ⓘ Sellaite

Formula: MgF2

ⓘ Siderite

Formula: FeCO3

ⓘ Sillimanite

Formula: Al2(SiO4)O

ⓘ 'Smectite Group'

Formula: A0.3D2-3[T4O10]Z2 · nH2O

ⓘ Spessartine

Formula: Mn2+3Al2(SiO4)3

Localities:

Elliot claims, Erongorus Farm 166, Karibib Constituency, Erongo Region, Namibia
Rubikon Mine, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Davib West Farm 62, Karibib Constituency, Erongo Region, Namibia
Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia

ⓘ Sphalerite

Formula: ZnS

ⓘ Stanĕkite (TL)

Formula: (Mn2+,Fe2+,Mg)Fe3+(PO4)O

Type Locality:

References:

Keller, Paul, Fontan, François, Velasco Roldan, Francisco, Melgarejo I Draper, Joan Carles (1997) Staněkite, Fe3+(Mn,Fe2+,Mg)(PO4): a new phosphate mineral in pegmatites at Karibib (Namibia) and French Pyrénées (France) European Journal of Mineralogy, 9 (3) 475-482 doi:10.1127/ejm/9/3/0475

ⓘ Stellerite

Formula: Ca4(Si28Al8)O72 · 28H2O

ⓘ Stewartite

Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O

ⓘ Stolzite

Formula: Pb(WO4)

ⓘ Strunzite

Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O

ⓘ Talc

Formula: Mg3Si4O10(OH)2

ⓘ 'Tantalite'

Formula: (Mn,Fe)(Ta,Nb)2O6

Localities: Reported from at least 13 localities in this region.

ⓘ Tantalite-(Fe)

Formula: Fe2+Ta2O6

Localities:

Carsie pegmatite, Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Davib Mine, Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Van der Made pegmatite, Schlucht Farm 162, Karibib Constituency, Erongo Region, Namibia
Pieters Hill, Erongorus Farm 166, Karibib Constituency, Erongo Region, Namibia

ⓘ Tavorite

Formula: LiFe3+(PO4)(OH)

Localities:

Clementine II pegmatite, Okatjimukuju Farm 55 (Friedrichsfelde Farm), Karibib Constituency, Erongo Region, Namibia
Rubikon Mine, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia
Tsaobismund pegmatite, Tsaobismund Farm 85, Karibib Constituency, Erongo Region, Namibia

ⓘ Thorite

Formula: Th(SiO4)

ⓘ Titanite

Formula: CaTi(SiO4)O

Localities:

Henderson Mine (Anderson Mine), Naob Farm 69, Usakos, Karibib Constituency, Erongo Region, Namibia
Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Twin Hills prospects, Karibib Constituency, Erongo Region, Namibia

ⓘ Todorokite

Formula: (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O

ⓘ Topaz

Formula: Al2(SiO4)(F,OH)2

Localities: Reported from at least 9 localities in this region.

ⓘ Torbernite

Formula: Cu(UO2)2(PO4)2 · 12H2O

ⓘ 'Tourmaline'

Formula: A D3G6 (T6O18)(BO3)3X3Z

Localities: Reported from at least 18 localities in this region.

ⓘ 'Tourmaline var. Achroite'

Formula: A(D3)G6(T6O18)(BO3)3X3Z

ⓘ 'Tourmaline var. Rubellite'

Formula: A(D3)G6(T6O18)(BO3)3X3Z

ⓘ 'Tourmaline var. Watermelon Tourmaline'

Formula: A(D3)G6(T6O18)(BO3)3X3Z

ⓘ Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2

ⓘ Triphylite

Formula: LiFe2+PO4

Localities: Reported from at least 18 localities in this region.

ⓘ Triphylite var. Ferrisicklerite

Formula: Li1-x(Fe3+xFe2+1-x)PO4

Localities: Reported from at least 26 localities in this region.

ⓘ Triplite

Formula: Mn2+2(PO4)F

Localities: Reported from at least 14 localities in this region.

ⓘ Turquoise

Formula: CuAl6(PO4)4(OH)8 · 4H2O

Description: As small botroids in fissures in quartz at the Rubikon pegmatite.

ⓘ Uraninite

Formula: UO2

Localities:

Clementine II pegmatite, Okatjimukuju Farm 55 (Friedrichsfelde Farm), Karibib Constituency, Erongo Region, Namibia
Van der Made pegmatite, Schlucht Farm 162, Karibib Constituency, Erongo Region, Namibia
Valencia deposit, Karibib Constituency, Erongo Region, Namibia
Navachab Gold Mine, Karibib Constituency, Erongo Region, Namibia
Brockmann's pegmatite, Tsaobismund Farm 85, Karibib Constituency, Erongo Region, Namibia

ⓘ Uranophane

Formula: Ca(UO2)2(SiO3OH)2 · 5H2O

ⓘ Uranotungstite

Formula: (Ba0.35Pb0.27)Σ0.62[(U6+O2)2(W6+0.98Fe3+0.26◻0.75)O4.7(OH)2.5(H2O)1.75](H2O)1.67

ⓘ Varulite

Formula: NaCaMn2+Mn2+2(PO4)3

References:

ⓘ Vesuvianite

Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9

ⓘ Vivianite

Formula: Fe2+Fe2+2(PO4)2 · 8H2O

ⓘ 'Wad'

ⓘ Walpurgite

Formula: (BiO)4(UO2)(AsO4)2 · 2H2O

ⓘ Waylandite

Formula: BiAl3(PO4)2(OH)6

ⓘ Whitlockite

Formula: Ca9Mg(PO4)6(PO3OH)

ⓘ Wollastonite

Formula: Ca3(Si3O9)

ⓘ Wulfenite

Formula: Pb(MoO4)

ⓘ Xenotime-(Y)

Formula: Y(PO4)

ⓘ 'Zinnwaldite'

Localities:

Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Van der Made pegmatite, Schlucht Farm 162, Karibib Constituency, Erongo Region, Namibia
Helikon II pegmatite, Okongava Ost Farm 72, Karibib Constituency, Erongo Region, Namibia

ⓘ Zircon

Formula: Zr(SiO4)

Localities: Reported from at least 13 localities in this region.

ⓘ Zwieselite

Formula: Fe2+2(PO4)F