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Mannardite

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Formula:
Ba
 
x
Ti
 
8-2x
V
 
2x
O
 
16
·2-xH
 
2
O
System:TetragonalHardness:7
Name:The name honors Dr. George William Mannard (1932-1982), president of Kidd Creek Mines Ltd and it commemorates his long-standing interest in unusual minerals and in mineral deposits of northern British Columbia.
This page provides mineralogical data about Mannardite.

Classification of Mannardite

IMA status:Approved 1983
Strunz 8th edition ID:4/D.08-40
Nickel-Strunz 10th (pending) edition ID:4.DK.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
K : With large (+- medium-sized) cations; tunnel structures
Dana 8th edition ID:7.9.5.1

7 : MULTIPLE OXIDES
9 : AB8X16
Hey's CIM Ref.:7.12.17

7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta
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Type Occurrence of Mannardite

Type Locality:Rough claims, Kechika River, Sifton Pass, Liard Mining Division, British Columbia, Canada
Year of Discovery:1983
Geological Setting of type material:Geological setting is represented by quartz veins embedded in the Gunsteel Fm., a paleozoic formation rich in baryte. Mannardite was found in three different kind of veins: type A, in association with barytocalcite and norsethite; type B, in which almost barytocalcite has been altered to baryte, in association with rare norsethite and sulvanite; type C, only with quartz and barytocalcite.

Physical Properties of Mannardite

Hardness (Mohs):7
Density (measured):4.12 g/cm3
Density (calculated):4.28 g/cm3
Comment:Density of a Cr-free mannardite from Kantsi, Sichuan, China is 4.43 g/cm3; microindentation hardness measured on a sample coming from this locality is 609 Kg/mm2.

Crystallography of Mannardite

Crystal System:Tetragonal
Class (H-M):4/m - Dipyramidal
Space Group:I41/a
Cell Parameters:a = 14.356Å, c = 5.911Å
Ratio:a:c = 1 : 0.412
Unit Cell Volume:V 1,218.23 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
3.201 (100) 420
1.586 (80) 732
2.473 (70) 312
1.887 (70) 352
2.224 (50) 332

Chemical Properties of Mannardite

Formula:
Ba
 
x
Ti
 
8-2x
V
 
2x
O
 
16
·2-xH
 
2
O
Essential elements:Ba, O, Ti, V
All elements listed in formula:Ba, H, O, Ti, V

Relationship of Mannardite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DK.05Akaganeite
β-Fe
3+
 
O(OH,Cl)
4.DK.05Ankangite
Ba(Ti,V
3+
 
,Cr)
 
8
O
 
16
4.DK.05Coronadite
Pb(Mn
4+
 
,Mn
3+
 
)
 
8
O
 
16
4.DK.05Hollandite
Ba(Mn
4+
 
,Mn
2+
 
)
 
8
O
 
16
4.DK.05Manjiroite
(Na,K)Mn
 
8
O
 
16
· nH
 
2
O
4.DK.05Priderite
(K,Ba)(Ti,Fe)
 
8
O
 
16
4.DK.05Redledgeite
Ba
 
x
([Cr,Fe,V]
3+
2x
Ti
 
8-2x
)O
 
16
4.DK.05Henrymeyerite
BaFe
2+
 
Ti
 
7
O
 
16
4.DK.10Cryptomelane
K(Mn
4+
 
,Mn
2+
 
)
 
8
O
 
16
4.DK.10Romanèchite
(Ba,H
 
2
O)
 
2
Mn
 
5
O
 
10
4.DK.10Todorokite
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
 
6
O
 
12
· 3H
 
2
O
4.DK.10Strontiomelane
SrMn
4+
6
Mn
3+
2
O
 
16
Related Minerals - Hey's Index Grouping:

- +
7.12.1Montroseite
(V
3+
 
,Fe
3+
 
)O(OH)
7.12.2 Scherbinaite
7.12.3Paramontroseite
V
4+
 
O
 
2
7.12.4Häggite
V
3+
 
V
4+
 
O
 
2
(OH)
 
3
7.12.5Duttonite
V
4+
 
O(OH)
 
2
7.12.6Doloresite
V
4+
3
O
 
4
(OH)
 
4
7.12.7Lenoblite
V
4+
2
O
 
4
· 2H
 
2
O
7.12.8Navajoite
Fe
3+
 
V
5+
9
O
 
24
· 12H
 
2
O
7.12.9Vanoxite
V
4+
4
V
5+
2
O
 
13
· 8H
 
2
O
7.12.10Bariandite
Al
 
0.6
(V
5+
 
,V
4+
 
)
 
8
O
 
20
· 9H
 
2
O
7.12.11Corvusite
(Na,K,Ca,Mg)
 
2
(V
5+
 
,V
4+
 
,Fe
2+
 
)
 
8
O
 
20
· 6-10H
 
2
O
7.12.12Simplotite
CaV
4+
4
O
 
9
· 5H
 
2
O
7.12.13Kyzylkumite
BeV
3+
2
TiO
 
6
7.12.14Schreyerite
V
3+
2
Ti
 
3
O
 
9
7.12.15Berdesinskiite
V
3+
2
TiO
 
5
7.12.16Tivanite
V
3+
 
TiO
 
3
(OH)
7.12.18Karelianite
V
3+
2
O
 
3
7.12.19Coulsonite
Fe
2+
 
V
3+
2
O
 
4
7.12.20Nolanite
(V
3+
 
,Fe
3+
 
,Fe
2+
 
,Ti)
 
10
O
 
14
(OH)
 
2
7.12.21Vuorelainenite
(Mn,Fe)(V,Cr)
 
2
O
 
4
7.12.22Tantite
Ta
 
2
O
 
5
7.12.23Kimrobinsonite
(Ta,Nb)(OH)
 
5-2x
(O,CO
 
3
)
 
x
; x near 1.2

Other Names for Mannardite

Synonyms:
IMA1983-013
Other Languages:
German:Mannardit
Russian:Маннардит
Spanish:Mannardita

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 Mannardite

Reference List:

- +
Scott, J.D. & Peatfield, G.R. (1986): Mannardite [Ba.H2O](Ti6V3+2)O16, a new mineral species, and new data on redledgeite. Canadian Mineralogist, 24, 55-66.

Szymański, J.T. (1986): The crystal structure of mannardite, a new hydrated cryptomelane-group (hollandite) mineral with a doubled short axis. Canadian Mineralogist, 24, 67-78.

American Mineralogist (1988): 73, 193.

Internet Links for Mannardite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mannardite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Mannardite

    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.
    Canada
     
    • British Columbia
      • Liard Mining Division
        • Sifton Pass
          • Kechika River
    Geol.Ass.Canada, Progr.Abstr.(1984) 9, 104; Scott, J. D., & Peatfield, G. R. (1986). Mannardite [Ba.H2O](Ti6V3+2)O16, a new mineral species, and new data on redledgeite. Canadian Mineralogist, 24, 55-66.
    • New Brunswick
      • Gloucester Co.
        • Bathurst Parish
          • Bathurst Mining Camp
    Scott, J. D., & Peatfield, G. R. (1986). Mannardite [Ba.H2O](Ti6V3+2)O16, a new mineral species, and new data on redledgeite. Canadian Mineralogist, 24, 55-66.
    South Africa
     
    • Free State Province
    Minerals of South Africa
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the 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 hundreds 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. Current server date and time: 19th Jun 2011 20:48:37
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