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Zimbabweite

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Formula:
(Na,K)
 
2
PbAs
 
4
(Ta,Nb,Ti)
 
4
O
 
18
System:OrthorhombicColour:Yellow, yellow-brown
Lustre:AdamantineHardness:5 - 5½
Name:Named after its discovery locality, St. Ann's Mine, Karoi District, south of Miami, Zimbabwe.
This page provides mineralogical data about Zimbabweite.

Classification of Zimbabweite

IMA status:Approved 1984
Strunz 8th edition ID:4/J.04-10
Nickel-Strunz 10th (pending) edition ID:4.JA.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
A : Arsenites, antimonites, bismuthites; without additional anions, without H2O
Dana 8th edition ID:8.7.10.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
7 : Miscellaneous
Hey's CIM Ref.:23.11

23 : Arsenites
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Type Occurrence of Zimbabweite

Type Locality:St Anns Mine (St Anne Mine; St Anne's Mine; St Ann's Mine), Mwami (Miami), Karoi District (Urungwe; Hurungwe District), Mashonaland West, Zimbabwe
Year of Discovery:1984

Physical Properties of Zimbabweite

Lustre:Adamantine
Colour:Yellow, yellow-brown
Hardness (Mohs):5 - 5½

Crystallography of Zimbabweite

Crystal System:Orthorhombic
Cell Parameters:a = 12.23Å, b = 15.29Å, c = 8.66Å
Ratio:a:b:c = 0.8 : 1 : 0.566
Unit Cell Volume:V 1,619.39 ų (Calculated from Unit Cell)

Optical Data of Zimbabweite

Type:Biaxial (+)
RI values: nα = 2.100
2V:Measured: 80°
Maximum Birefringence:δ = 2.100

Chart 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 Zimbabweite

Formula:
(Na,K)
 
2
PbAs
 
4
(Ta,Nb,Ti)
 
4
O
 
18
Simplified for copy/paste:(Na,K)2PbAs4(Ta,Nb,Ti)4O18
Essential elements:As, Na, O, Pb, Ta
All elements listed in formula:As, K, Na, Nb, O, Pb, Ta, Ti

Relationship of Zimbabweite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.JA.05Leiteite
Zn(As
 
2
O
 
4
)
4.JA.10Reinerite
Zn
 
3
(AsO
 
3
)
 
2
4.JA.15Karibibite
Fe
 
2
As
 
4
O
 
9
4.JA.20Kusachiite
CuBi
 
2
O
 
4
4.JA.20Schafarzikite
Fe
2+
 
Sb
3+
2
O
 
4
4.JA.20Trippkeite
Cu[As
 
2
O
 
4
]
4.JA.25Apuanite
Fe
2+
 
Fe
3+
4
Sb
3+
4
O
 
12
S
4.JA.30Versiliaite
Fe
 
2
Fe
 
4
Sb
 
6
O
 
16
S
4.JA.35Schneiderhöhnite
Fe
2+
 
Fe
3+
3
[As
 
5
O
 
13
]
4.JA.45Ludlockite
PbFe
3+
4
As
3+
10
O
 
22
4.JA.50Paulmooreite
Pb
 
2
[As
 
2
O
 
5
]
4.JA.55Stibivanite
Sb
 
2
VO
 
5
4.JA.60Chadwickite
(UO
 
2
)[HAsO
 
3
]
Related Minerals - Hey's Index Grouping:

- +
23.2Nanlingite
NaMg
 
4
(AsO
 
3
)
 
2
F
 
4
23.3Leiteite
Zn(As
 
2
O
 
4
)
23.5Kuznetsovite
(Hg
+
2
)Hg
2+
 
(AsO
 
4
)Cl
23.6Paulmooreite
Pb
 
2
[As
 
2
O
 
5
]
23.7Ecdemite
Pb
 
6
Cl
 
4
(As
 
2
O
 
7
)
23.8Heliophyllite
Pb
 
6
Cl
 
4
(As
 
2
O
 
7
)
23.9Finnemanite
Pb
 
5
(AsO
 
3
)
 
3
Cl
23.10Gebhardite
Pb
 
8
(As
 
2
O
 
5
)
 
2
OCl
 
6
23.13Rouseite
Pb
 
2
Mn
2+
 
[AsO
 
3
]
 
2
· 2H
 
2
O
23.14Freedite
Cu
+
 
Pb
 
8
(AsO
 
3
)
 
2
O
 
3
Cl
 
5
23.15Manganarsite
Mn
 
3
(As
 
2
O
 
4
)(OH)
 
4
23.17Armangite
Mn
2+
26
(AsO
 
3
)
 
14
(HAsO
 
3
)
 
4
(CO
 
3
)
23.18Karibibite
Fe
 
2
As
 
4
O
 
9
23.19Schneiderhöhnite
Fe
2+
 
Fe
3+
3
[As
 
5
O
 
13
]
23.20Lazarenkoite
(Ca,Fe
2+
 
)Fe
3+
 
As
3+
3
O
 
7
· 3H
 
2
O
23.21Stenhuggarite
CaFeSb(AsO
 
3
)
 
2
O
23.22Tomichite
(V,Fe)
 
4
Ti
 
3
AsO
 
13
(OH)

Other Names for Zimbabweite

Synonyms:
IMA1984-034
Other Languages:
German:Zimbabweit
Russian:Зимбабвеит
Spanish:Zimbabweita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Zimbabweite

Reference List:

- +
Bulletin de la Société française de Minéralogie et de Cristallographie (1986): 106: 331-336.

American Mineralogist (1988): 73: 1186-1190.

American Mineralogist (1990): 75: 244.

Internet Links for Zimbabweite

Search Engines:
  • Look for Zimbabweite on Google
  • Look for Zimbabweite images on Google
  • External Links:
  • Look for Zimbabweite on Webmineral
  • Look for Zimbabweite on Athena Mineralogy
  • Look for Zimbabweite on Wikipedia
  • Look for Zimbabweite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Zimbabweite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Rare and Unusual minerals at Mineralogical Research Company
  • Zimbabweite specimens for sale - minfind.com
  • Search for Zimbabweite on Well-Arranged Molecules
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  • Buy minerals from YourMineralCollection
  • Localities for Zimbabweite

    The 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. ? 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.
    Zimbabwe
     
    • Mashonaland West
      • Karoi District (Urungwe; Hurungwe District)
        • Mwami (Miami)
    Foord, E.E.; Taggert jr., J.E.; Gaines, R.V.; Grubb, P. L.C & Kristiansen, R. (1986): Zimbabweite, a new alkali-lead-arsenic tantalate from St. Anns mine, Karoi District, Zimbabwe. Bulletin Minéralogie, 109: 331-336
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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