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Namibite

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Formula:
Cu(BiO)2VO4(OH)
System:
Triclinic
Colour:
Dark green
Hardness:
4½ - 5
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 Namibite

Approved
Approval Year:
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

Physical Properties of Namibite

Diaphaneity (Transparency):
Translucent
Colour:
Dark green
Hardness (Mohs):
4½ - 5
Cleavage:
Perfect
{001}

Optical Data of Namibite

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

Chemical Properties of Namibite

IMA Formula:
Cu(BiO)2VO4(OH)
Elements listed in formula:

Crystallography of Namibite

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 Volume:
V 308.22 ų
Morphology:
Thick tabular, prismatic. Rounded crystal aggregates.
Comment:
Pseudo-monoclinic (pseudo C-centred monoclinic with a = 11.864(4), b = 3.696(4), c = 7.491(5), β = 109.42(6)°.

Type Occurrence of Namibite

Relationship of Namibite to other Species

8.BB.XArsenowagneriteMg2AsO4F
8.BB.05AmblygoniteLiAlPO4F
8.BB.05MontebrasiteLiAlPO4(OH)
8.BB.05TavoriteLiFe3+PO4(OH)
8.BB.10Triplite(Mn2+,Fe2+)2PO4(F,OH)
8.BB.10ZwieseliteFe2+Mn2+PO4F
8.BB.15SarkiniteMn22+AsO4(OH)
8.BB.15TriploiditeMn22+(PO4)(OH)
8.BB.15WagneriteMg2PO4F
8.BB.15WolfeiteFe22+PO4(OH)
8.BB.15StanĕkiteFe3+Mn2+O(PO4)
8.BB.15JoosteiteMn2+Mn3+O(PO4)
8.BB.15HydroxylwagneriteMg2PO4(OH)
8.BB.20HoltedahliteMg12(PO3OH,CO3)(PO4)5(OH,O)6
8.BB.20Satterlyite(Fe2+,Mg,Fe3+)12(PO3OH)(PO4)5(OH,O)6
8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,◻)
8.BB.30AdamiteZn2AsO4(OH)
8.BB.30EveiteMn22+AsO4(OH)
8.BB.30LibetheniteCu2PO4(OH)
8.BB.30OliveniteCu2AsO4(OH)
8.BB.30ZincolibetheniteCuZnPO4OH
8.BB.30ZincoliveniteCuZnAsO4(OH)
8.BB.30AuriacusiteFe3+Cu2+AsO4O
8.BB.35ParadamiteZn2AsO4(OH)
8.BB.35TarbuttiteZn2(PO4)(OH)
8.BB.40BarbosaliteFe2+Fe23+(PO4)2(OH)2
8.BB.40HentscheliteCuFe23+(PO4)2(OH)2
8.BB.40LazuliteMgAl2(PO4)2(OH)2
8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2
8.BB.40WilhelmkleiniteZnFe23+(AsO4)2(OH)2
8.BB.45TrolleiteAl4(PO4)3(OH)3
8.BB.55Phosphoellenbergerite(Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6
8.BB.60UrusoviteCuAlO(AsO4)
8.BB.65TheoparacelsiteCu3(OH)2As2O7
8.BB.70TuraniteCu52+(VO4)2(OH)4
8.BB.75StoiberiteCu5O2(VO4)2
8.BB.80FingeriteCu11O2(VO4)6
8.BB.85AverieviteCu5O2(VO4)2 · CuCl2
8.BB.90LipscombiteFe2+Fe23+(PO4)2(OH)2
8.BB.90RichelliteCaFe23+(PO4)2(OH,F)2
8.BB.90ZinclipscombiteZnFe23+(PO4)2(OH)2
21.3.1SteigeriteAlVO4 · 3H2O
21.3.2Alvanite(Zn,Ni)Al4(VO3)2(OH)12 · 2H2O
21.3.3MetaschoderiteAlPO4 · 3H2O
21.3.4SchoderiteAl2(PO4)(VO4) · 8H2O
21.3.5SatpaeviteAl12V8O37 · 30H2O
21.3.6VanaliteNaAl8V10O38 · 30H2O
21.3.7Wakefieldite-(Ce)CeVO4
21.3.7Wakefieldite-(Y)YVO4
21.3.8ChervetitePb2V25+O7
21.3.9MottramitePbCuVO4(OH)
21.3.10DescloizitePbZnVO4(OH)
21.3.11ClinobisvaniteBiVO4
21.3.11DreyeriteBiVO4
21.3.11PucheriteBiVO4
21.3.12SchumacheriteBi3O(VO4)2(OH)
21.3.14Pottsite(Pb3Bi)Bi(VO4)4 · H2O
21.3.15Duhamelite(Pb,Bi,Ca)Cu(VO4)(OH,O)

Other Names for Namibite

Name in Other Languages:
German:Namibit
Spanish:Namibita

Other Information

Other Information:
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 Namibite

Reference List:
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.

American Mineralogist (1982): 67: 857.

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.

American Mineralogist (1995): 80: 1076-1077.

Dunning, G. E. and Cooper, J. F., Jr. (1998): Namibite: a summary of world occurrences. Mineralogical Record: 29: 163-166.

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.

Internet Links for Namibite

mindat.org URL:
https://www.mindat.org/min-2836.html
Please feel free to link to this page.

Localities for Namibite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
          • Jáchymov (St Joachimsthal)
[Mineralogical Record 29:163-166]
Lapis 2002(7/8), 46
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Hausach
Blaß, G. & Graf, H.W. (1995): Namibit, ein Neufund aus dem Schwarzwald. Mineralien-Welt, 6 (6), 20-22.
      • Wolfach
        • Oberwolfach
          • Rankach valley
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
    • Erzgebirge
      • Schneeberg District
        • Wolfgang Maaßen Mine field
[Mineralogical Record 29:164]
  • Thuringia
    • Vogtland
      • Hirschberg
        • Ullersreuth
T. Witzke et al.: Lapis 2001(12), 13-27
Japan
 
  • Kyushu Region
    • Fukuoka Prefecture
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
    • Mun. de Navojoa
Brent Thorne collection.
Namibia
 
  • Kunene Region
    • Kaokoveld Plateau
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 District
      • 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
UK
 
  • England
    • Cumbria
      • Southern Fells
        • 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 Mts
        • Banner District
          • Christmas area
            • Christmas
Raman analyzed at the University of Arizona.
    • Yavapai Co.
      • Bradshaw Mts (Bradshaw Range)
        • Castle Creek 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.
      • Diamond Mts
        • Last Chance 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 District
        • Soda Mts
          • Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort)
EDS analyzed by Bob Housley.
    • San Diego Co.
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 District
[MinRec 29:165]
  • Nevada
    • Clark Co.
      • Spring Mts
        • Goodsprings District
Self collected by Brent Thorne. SEM EDAX verified by Robert Housley
Mineral and/or Locality  
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