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Namibite

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About NamibiteHide

Formula:
Cu(BiO)2(VO4)(OH)
Colour:
Dark green
Hardness:
4½ - 5
Crystal System:
Triclinic
Name:
Namibite is named after the Namib Desert, not Namibia per se.
A dark green secondary Cu-Bi-vanadate.

Structurally related to brendelite. Chemically resembles khorixasite.


Classification of NamibiteHide

Approved
Approval Year:
1981
First Published:
1981
8.BB.50

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
38.5.9.1

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
5 : Miscellaneous
21.3.13

21 : Vanadates (and vanadates with arsenate or phosphate)
3 : Vanadates of Al, rare earths, Pb, V or Bi

Pronounciation of NamibiteHide

Pronounciation:
PlayRecorded byCountry
Debbie WoolfUnited Kingdom

Physical Properties of NamibiteHide

Transparency:
Translucent
Colour:
Dark green
Streak:
Pistachio-green
Hardness:
4½ - 5 on Mohs scale
Cleavage:
Perfect
{001}

Optical Data of NamibiteHide

Type:
Biaxial (-)
RI values:
nα = 2.100
Max Birefringence:
δ = 2.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v extreme
Pleochroism:
Visible
Comments:
X = yellowish-green, Y = pistachio green, Z = dark green, Z > Y > X.

Chemical Properties of NamibiteHide

Formula:
Cu(BiO)2(VO4)(OH)

Crystallography of NamibiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.210(1) Å, b = 7.398(1) Å, c = 7.471(1) Å
α = 90.10(1)°, β = 108.73(1)°, γ = 107.47(1)°
Ratio:
a:b:c = 0.839 : 1 : 1.01
Unit Cell V:
308.22 ų
Morphology:
Thick tabular, prismatic. Rounded crystal aggregates.
Twinning:
Commonly twinned
Comment:
Pseudo-monoclinic (pseudo C-centred monoclinic with a = 11.864(4), b = 3.696(4), c = 7.491(5), β = 109.42(6)°.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0002512NamibiteKolitsch U, Giester G (2000) The crystal structure of namibite, Cu(BiO)2VO4(OH), and a revision of its symmetry American Mineralogist 85 1298-130120000293
CIF Raw Data - click here to close

Type Occurrence of NamibiteHide

General Appearance of Type Material:
Platy crystals up to 2 mm in cavities in drusy quartz veins
Place of Conservation of Type Material:
Leeds University, England.
University of Helsinki, Finland.
Geological Setting of Type Material:
Copper deposit
Reference:
von Knorring, O. and Sahama, T. G. (1981) Namibite, a new copper-bismuth-vanadium mineral from Namibia. Schweizerische mineralogische und petrographische Mitteilungen: 61: 7-12.

Synonyms of NamibiteHide

Other Language Names for NamibiteHide

German:Namibit
Spanish:Namibita

Common AssociatesHide

Associated Minerals Based on Photo Data:
14 photos of Namibite associated with ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
8 photos of Namibite associated with BeyeriteCa(BiO)2(CO3)2
6 photos of Namibite associated with EulytineBi4(SiO4)3
4 photos of Namibite associated with QuartzSiO2
3 photos of Namibite associated with Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2O
3 photos of Namibite associated with Duhamelite(Pb,Bi,Ca)Cu(VO4)(OH,O)
3 photos of Namibite associated with BismuthBi
3 photos of Namibite associated with MottramitePbCu(VO4)(OH)
3 photos of Namibite associated with SilléniteBi12SiO20
3 photos of Namibite associated with ShattuckiteCu5(Si2O6)2(OH)2

Related Minerals - Nickel-Strunz GroupingHide

8.BB.XArsenowagneriteMg2(AsO4)FMon. 2/m : P21/b
8.BB.05AmblygoniteLiAl(PO4)FTric. 1 : P1
8.BB.05MontebrasiteLiAl(PO4)(OH)Tric. 1 : P1
8.BB.05TavoriteLiFe3+(PO4)(OH)Tric. 1 : P1
8.BB.10TripliteMn2+2(PO4)FMon. 2/m
8.BB.10ZwieseliteFe2+2(PO4)FMon. 2/m : P21/b
8.BB.15SarkiniteMn2+2(AsO4)(OH)Mon. 2/m : P2/m
8.BB.15TriploiditeMn2+2(PO4)(OH)Mon. 2/m : P2/b
8.BB.15Wagnerite(Mg,Fe2+)2(PO4)FMon. 2/m : P21/b
8.BB.15WolfeiteFe2+2(PO4)(OH)Mon. 2/m : P21/b
8.BB.15Stanĕkite(Mn2+,Fe2+,Mg)Fe3+(PO4)OMon.
8.BB.15JoosteiteMn2+(Mn3+,Fe3+)(PO4)OMon. 2/m
8.BB.15HydroxylwagneriteMg2(PO4)(OH)Mon. 2/m : P21/b
8.BB.20HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
8.BB.20Satterlyite(Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6Trig. 3m (3 2/m) : P3 1m
8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BB.30AdamiteZn2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30EveiteMn2+2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30LibetheniteCu2(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30OliveniteCu2(AsO4)(OH)Mon. 2/m : P21/m
8.BB.30ZincolibetheniteCuZn(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30ZincoliveniteCuZn(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30AuriacusiteFe3+Cu2+(AsO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.35ParadamiteZn2(AsO4)(OH)Tric. 1 : P1
8.BB.35TarbuttiteZn2(PO4)(OH)Tric. 1 : P1
8.BB.40BarbosaliteFe2+Fe3+2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40HentscheliteCuFe3+2(PO4)2(OH)2Mon.
8.BB.40LazuliteMgAl2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40WilhelmkleiniteZnFe3+2(AsO4)2(OH)2Mon.
8.BB.45TrolleiteAl4(PO4)3(OH)3Mon. 2/m : B2/b
8.BB.55Phosphoellenbergerite(Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6Hex.
8.BB.60UrusoviteCuAl(AsO4)OMon.
8.BB.65TheoparacelsiteCu3(As2O7)(OH)2Orth.
8.BB.70TuraniteCu5(VO4)2(OH)4Tric. 1 : P1
8.BB.75StoiberiteCu5(VO4)2O2Mon.
8.BB.80FingeriteCu11(VO4)6O2Tric. 1 : P1
8.BB.85AverieviteCu6(VO4)2O2Cl2Trig.
8.BB.90LipscombiteFe2+Fe3+2(PO4)2(OH)2Tet.
8.BB.90RichelliteCaFe3+2(PO4)2(OH,F)2Amor.
8.BB.90ZinclipscombiteZnFe3+2(PO4)2(OH)2Tet. 4 2 2 : P43 21 2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

21.3.1SteigeriteAl(VO4) · 3H2OMon. 2/m : P21/m
21.3.2AlvaniteZnAl4(V5+O3)2(OH)12 · 2H2OMon. 2/m : P21/m
21.3.3MetaschoderiteAl2(PO4)(VO4) · 6H2OMon. 2/m : P2/m
21.3.4SchoderiteAl2(PO4)(VO4) · 8H2OMon.
21.3.5SatpaeviteAl12V4+2V5+6O37 · 30H2OOrth.
21.3.6VanaliteNaAl8V10O38 · 30H2OMon.
21.3.7Wakefieldite-(Ce)Ce(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
21.3.7Wakefieldite-(Y)Y(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
21.3.8ChervetitePb2(V2O7)Mon.
21.3.9MottramitePbCu(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
21.3.10DescloizitePbZn(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
21.3.11ClinobisvaniteBi(VO4)Mon. 2/m
21.3.11DreyeriteBi(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
21.3.11PucheriteBi(VO4)Orth. mmm (2/m 2/m 2/m)
21.3.12SchumacheriteBi3(VO4)2O(OH)Tric.
21.3.14Pottsite(Pb3xBi4-2x)(VO4)4·H2O (0.8 < x < 1.0)Tet. 4/m : I41/a
21.3.15Duhamelite(Pb,Bi,Ca)Cu(VO4)(OH,O)Orth.

Fluorescence of NamibiteHide

None observed

Other InformationHide

Notes:
Soluble in cold dilute acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for NamibiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
von Knorring, O. and Sahama, T. G. (1981) Namibite, a new copper-bismuth-vanadium mineral from Namibia. Schweizerische mineralogische und petrographische Mitteilungen: 61: 7-12.
Fleischer, M., Chao, G.Y., Mandarino, J.A. (1982) New mineral names. American Mineralogist: 67: 854-860.
Mrázek, Z., Veselovsky, F., Hlousek, J., Moravcova, H., and Ondrus, P. (1994) Redefinition of namibite, Cu(BiO)2VO4OH. Neues Jahrbuch für Mineralogie, Monatshefte: 1994: 481-488.
Jambor, J.L., Roberts, A.C. (1995) New mineral names. American Mineralogist: 80: 1073-1077.
Foord, E.E. (1996) Clinobisvanite, eulytite, and namibite from the Pala pegmatite district, San Diego Co., California, USA. Mineralogical Magazine: 60: 387-388.
Dunning, G. E. and Cooper, J. F., Jr. (1998) Namibite: a summary of world occurrences. Mineralogical Record: 29: 163-166.
Kolitsch, U., Götzinger, M. (2000) Einige Neufunde aus der Grube Clara im mittleren Schwarzwald: Eulytin, Namibit, Volborthit, Gearksutit, Spertiniit, Monazit-(La), Protasit, Sainfeldit, Cyanotrichit und Vauquelinit. Der Erzgräber: 14: 33-47.
Kolitsch, U., and G. Giester (2000) The crystal structure of namibite, Cu(BiO)2VO4(OH), and revision of its symmetry. American Mineralogist: 85: 1298-1301.
Frost, R.L., Henry, D.A., Weier, M.L., Martens, W. (2006) Raman spectroscopy of three polymorphs of BiVO4: clinobisvanite, dreyerite and pucherite, with comparisons to (VO4)3-bearing minerals: namibite, pottsite and schumacherite. Journal of Raman Spectroscopy: 37: 722-732.

Internet Links for NamibiteHide

Localities for NamibiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Pring, A., Francis, G. & Birch, W. D. (1992): Nissonite, namibite, and other additions to the mineral suite from Iron Monarch, South Australia. Australian Mineral. 6, 31-39; [MinRec 29:164]
  • Victoria
    • East Gippsland Shire
      • Benambra
        • Morass Creek gorge
Dunning, G.E. & Cooper, J.F. (1998): Namibite. A summary of World Occurrences. Mineralogical Record 29, 163-166; Frost, R. L., Henry, D. A., Weier, M. L., & Martens, W. (2006). Raman spectroscopy of three polymorphs of BiVO4: clinobisvanite, dreyerite and pucherite, with comparisons to (VO4) 3‐bearing minerals: namibite, pottsite and schumacherite. Journal of Raman Spectroscopy, 37(7), 722-732.
Canada
 
  • Québec
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
        • Val-des-Monts
          • Lac Saint-Pierre (Wakefield Lake)
Mineralogical Record: 29: 164.
Czech Republic
 
  • Karlovy Vary Region
    • Karlovy Vary District
      • Jáchymov
[Mineralogical Record 29:163-166]
Lapis 2002(7/8), 46
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Hausach
Blaß, G. and Graf, H.W. (1995) Namibit, ein Neufund aus dem Schwarzwald. Mineralien-Welt: 6(6): 20-22.; Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.
        • Oberwolfach
Kolitsch, U. & Götzinger, M. (2000): Einige Neufunde aus der Grube Clara im mittleren Schwarzwald: Eulytin, Namibit, Volborthit, Gearksutit, Spertiniit, Monazit-(La), Protasit, Sainfeldit, Cyanotrichit und Vauquelinit. Erzgräber 14, 33-47. (in German); KOLITSCH, U., GRÖBNER, J. BLASS, G., GRAF, H.-W. & PRING, A. (2005): Neufunde aus der Grube Clara im mittleren Schwarzwald (II): Dreyerit, Gasparit-(Ce), Klinobisvanit, Kobaltkoritnigit, Metatyuyamunit, Roscoelith, Sengierit, Vésigniéit und Wakefieldit. Lapis 30 (9), 35-39; 58.
  • Saxony
    • Erzgebirgskreis
      • Schneeberg
        • Wolfgang Maaßen mines
[Mineralogical Record 29:164]
  • Thuringia
    • Saale-Orla District
      • Hirschberg
        • Ullersreuth
T. Witzke et al.: Lapis 2001(12), 13-27
Japan
 
  • Fukuoka prefecture
    • Munakata City
Uehara, S. & Y. Shirose (2013), Namibite and hechtsbergite from the Nagatare mine, Fukuoka Prefecture, Japan. Journal of Mineralogical and Petrological Sciences 108,105-110
Mexico
 
  • Sonora
    • Navojoa Municipality
Brent Thorne collection.
Namibia
 
  • Kunene Region
Niedermayr, G., Schnaitmann, E. A., Brandstätter, F. (2008): Das Dioptas-Shattuckit-Vorkommen Kandesei im Kakokoland [sic]. Mineralien-Welt 19, 76-93 (in German).; Bowell, R J et al (2013) Minerals of the Kaokoveld District, Kunene Region, Namibia. Mineralogical Record 44:485-504
    • Khorixas
      • Mesopotamia copper valley
von Knorring, O. and Sahama, T. G. (1981): Namibite, a new copper-bismuth-vanadium mineral from Namibia. Schweizerische mineralogische und petrographische Mitteilungen: 61: 7-12; Niedermayr, G.(2001): Mesopotamia 504 - die Typlokalität des Namibit. In: S. Jahn, O. Medenbach, G. Niedermayr, G. Schneider: Namibia - Zauberwelt edler Steine und Kristalle (1 Edition, in German), 97-99
Poland
 
  • Lower Silesian Voivodeship
    • Jelenia Góra County
      • Szklarska Poręba
        • Szklarska Poręba-Huta
Kozłowski, A., & Matyszczak, W. (2018). Oxygenic bismuth minerals in the NE part of the Karkonosze pluton (West Sudetes, SW Poland). Acta Geologica Polonica, 68(4).
UK
 
  • England
    • Cumbria
      • Copeland
        • Waberthwaite
[Mineralogical Record 29:164]; Neall, T., Young, B., Hyslop, E. K., and Fakes, R. D. (1993): Namibite from Buckbarrow Beck, Cumbria - the first british occurrence. Mineralogical Magazine, 57, 754-755. ; BMS Collection
USA
 
  • Arizona
    • Gila Co.
      • Dripping Spring Mountains
        • Banner Mining District
          • Christmas
Raman analyzed at the University of Arizona.
    • Yavapai Co.
      • Bradshaw Mts (Bradshaw Range)
        • Castle Creek Mining District
Joe Ruiz, Mammoth, AZ, USA; Bob Meyer (2012) Micro Mineral Collector. Friends of Mineralogy National Newsletter 42:10-13
Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 6. Mr. Joe Ruiz, Mammoth, AZ, personal communication to John Ebner, Ronald Deblois, Eckhard Stuart and C. Lemanski, Jr. (2008).
  • California
    • Plumas Co.
      • Last Chance Mining District
        • Adams Peak
Mineralogical Record (1998): 29: 165; Frost, R. L., Henry, D. A., Weier, M. L., & Martens, W. (2006). Raman spectroscopy of three polymorphs of BiVO4: clinobisvanite, dreyerite and pucherite, with comparisons to (VO4) 3‐bearing minerals: namibite, pottsite and schumacherite. Journal of Raman Spectroscopy, 37(7), 722-732.
    • San Bernardino Co.
      • Silver Lake Mining District
        • Soda Mountains
          • Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort)
EDS analyzed by Bob Housley.
Collected by and in the collection of Alex Earl
    • San Diego County
Foord, E. E. (1996), Clinobisvanite, eulytite, and namibite from the Pala pegmatite district, San Diego Co., California, USA. Mineralogical Magazine 60, 387.
        • Pala
          • Chief Mountain
Mineralogical Record (2002): 33(5): 388.
          • Hiriart Mountain (Hariat Mtn; Harriot Mtn; Heriart Mtn; Heriot Mtn; Hiriat Hill)
[Mineralogical Record 29:164]
          • Tourmaline Queen Mountain (Pala Mtn; Queen Mtn)
[Mineralogical Record 29:164]; Mineralogical Magazine 1996 60 : 387-388
  • Colorado
    • Fremont Co.
      • Eight Mile Park Pegmatite Mining District
[MinRec 29:165]
  • Nevada
    • Clark Co.
      • Spring Mountains
        • Goodsprings Mining District
Self collected by Brent Thorne. SEM EDAX verified by Robert Housley
 
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