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Mannardite

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Rough claims, Kechika River, Sifton Pass, Liard Mining Division, British Columbia, Canada
© 2008, J. Weissman

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

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,Mn)
 
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
(Mn,Mg,Ca,Ba,K,Na)
 
2
Mn
 
3
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,Fe)O(OH)
7.12.2 Scherbinaite
7.12.3Paramontroseite
VO
 
2
7.12.4Häggite
V
 
2
O
 
2
(OH)
 
3
7.12.5Duttonite
VO(OH)
 
2
7.12.6Doloresite
3V
 
2
O
 
4
·4H
 
2
O
7.12.7Lenoblite
V
 
2
O
 
4
·2H
 
2
O
7.12.8Navajoite
V
 
2
O
 
5
 · 3H
 
2
O
7.12.9Vanoxite
V
 
6
O
 
13
·8H
 
2
O
7.12.10Bariandite
Al
 
3
[(V
5+
 
,V
4+
 
)
 
4
O
 
10
]
 
10
 · 45H
 
2
O
7.12.11Corvusite
V
 
7
O
 
20
·nH
 
2
O
7.12.12Simplotite
CaV
 
4
O
 
9
·5H
 
2
O
7.12.13Kyzylkumite
V
 
2
Ti
 
3
O
 
9
7.12.14Schreyerite
V
 
2
Ti
 
3
O
 
9
7.12.15Berdesinskiite
V
3+
2
TiO
 
5
7.12.16Tivanite
VTiO
 
3
(OH)
7.12.18Karelianite
V
 
2
O
 
3
7.12.19Coulsonite
FeV
 
2
O
 
4
7.12.20Nolanite
(V,Fe,Fe,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.

Articles/Blogs about Mannardite

Internet Links for Mannardite

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    Localities for Mannardite

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    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.
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    (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 Township
        • Bathurst
    		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
    Mineral and/or Locality
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