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About MannarditeHide

Formerly defined as BaxTi8-2xV2xO16·2-xH2O.
Specific Gravity:
Crystal System:
The name honors Dr. George William Mannard (1932-1982), Canadian exploration geologist and mining executive, president of Kidd Creek Mines Ltd., for his long-standing interest in minerals and mineral deposits of British Columbia.
This page provides mineralogical data about Mannardite.

Classification of MannarditeHide

Approval Year:

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

9 : AB8X16

7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta

Physical Properties of MannarditeHide

4.12 g/cm3 (Measured)    4.28 g/cm3 (Calculated)
Density of a Cr-free mannardite from Gacun Mine, Sichuan, China is 4.43 g/cm3; microindentation hardness measured on a sample coming from this locality is 609 Kg/mm2.

Chemical Properties of MannarditeHide


Formerly defined as BaxTi8-2xV2xO16·2-xH2O.
IMA Formula:

Crystallography of MannarditeHide

Crystal System:
Class (H-M):
4/m - Dipyramidal
Space Group:
Cell Parameters:
a = 14.356 Å, c = 5.911 Å
a:c = 1 : 0.412
Unit Cell V:
1,218.23 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
3.201 (100) 420
1.586 (80) 732
2.473 (70) 312
1.887 (70) 352
2.224 (50) 332

Type Occurrence of MannarditeHide

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.

Synonyms of MannarditeHide

Other Language Names for MannarditeHide

Simplified Chinese:曼纳德石

Varieties of MannarditeHide

AnkangiteDiscredited in 2012 IMA 11-F (H2O-free variety of mannardite).

Relationship of Mannardite to other SpeciesHide

Other Members of this group:
HenrymeyeriteBa(Ti4+7Fe2+)O16Tet. 4/m : I4/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Baryte2 photos of Mannardite associated with Baryte on mindat.org.
Quartz2 photos of Mannardite associated with Quartz on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.DK.FerrihollanditeBa(Mn4+6Fe3+2)O16Mon. 2/m
4.DK.05Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2OMon. 2/m
4.DK.05aCoronaditePb(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aCryptomelaneK(Mn4+7Mn3+)O16Mon. 2/m
4.DK.05aHollanditeBa(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aManjiroiteNa(Mn4+7Mn3+)O16Tet. 4/m : I4/m
4.DK.05bHenrymeyeriteBa(Ti4+7Fe2+)O16Tet. 4/m : I4/m
4.DK.05aStrontiomelaneSr(Mn4+6Mn3+2)O16Mon. 2/m : P21/b
4.DK.10Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10Mon. 2/m
4.DK.10Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2OMon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.12.2 ScherbinaiteV5+2O5
7.12.5DuttoniteV4+O(OH)2Mon. 2/m
7.12.6DoloresiteV4+3O4(OH)4Mon. 2/m
7.12.7LenobliteV4+2O4 · 2H2OOrth. 2 2 2 : P21 21 21
7.12.8NavajoiteFe3+V5+9O24 · 12H2OMon. 2/m : B2/m
7.12.9VanoxiteV4+4V5+2O13 · 8H2O
7.12.10BarianditeAl0.6(V5+,V4+)8O20 · 9H2OMon.
7.12.11Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
7.12.12SimplotiteCaV4+4O9 · 5H2OMon.
7.12.13KyzylkumiteV3+Ti2O5(OH)Mon. 2/m : P21/b
7.12.19CoulsoniteFe2+V3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.12.21VuorelaineniteMn2+V3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.12.23Kimrobinsonite(Ta,Nb)(OH)5-2x(O,CO3)x ; x near 1.2Iso.

Other InformationHide

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 MannarditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.

Internet Links for MannarditeHide

Localities for MannarditeHide

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.
  • Minas Gerais
[var: Ankangite] Dr Jaroslav Hyrsl specimen, 2-2012,
[var: Ankangite] Tony Nikischer specimen and analysis; Jaroslav Hyrsl specimens
Canada (TL)
  • British Columbia
    • Liard Mining Division
      • Sifton Pass
        • Kechika River
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.
  • 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.
  • Shaanxi
    • Ankang
      • Hanbin District
[var: Ankangite] Am Min 76 (1991), 2020
  • Sichuan
    • Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture)
      • Baiyu Co.
        • Maqiong
Fengyi Chen, Shiying Li, Zhikai Tang, Jixue Li, Yaozong Zhou, and Shuihe Mao (1984): Acta Petrologica, Mineralogica et Analytica 3(4), 337-339; Scott, J.D., and Peatfield, G.R. (1986): Canadian Mineralogist 24, 55-66; Qingmin Jin, Huaguang Xie, and Wenguang Wang (1992): Volcanology and Mineral Resources 13(2), 48-58
  • Tuscany
    • Lucca Province
      • Apuan Alps
        • Stazzema
          • Sant'Anna di Stazzema
[var: Ankangite] Biagioni, C., Orlandi, P., & Pasero, M. (2008). Ankangite from Monte Arsiccio mine. (Apuan Alps, Tuscany): third world occurrence. Plinius, 34, 212; Biagioni, C., Orlandi, P., & Pasero, M. (2009). Ankangite from the Monte Arsiccio mine (Apuan Alps, Tuscany, Italy): occurrence, crystal structure, and classification problems in cryptomelane group minerals. Periodico di Mineralogia, 78, 3-11.
  • Irkutsk Oblast
    • Lake Baikal area
      • Slyudyanka (Sludyanka)
[var: Ankangite] Proceedings of the Russian Mineralogical Society 136(5), 65-75.; Reznitsky, L. Z., Sklyarov, E. V., Armbruster, T., Galuskin, E. V., Ushchapovskaya, Z. F., Polekhovsky, Y. S., ... & Barash, I. G. (2008). Batisivite, V8Ti6 [Ba (Si2O)] O28, a new mineral species from the derbylite group. Geology of Ore Deposits, 50(7), 565-573.
  • Khakassia
    • Askizsky Rayon
      • Askiz ore district
Kassandrov, E. G., & Mazurov, M. P. (2009). Magmatogenic manganese ores of the South Minusa Intermontane Trough. Geology of Ore Deposits, 51(5), 356.
Kassandrov, E. G., & Mazurov, M. P. (2009). Magmatogenic manganese ores of the South Minusa Intermontane Trough. Geology of Ore Deposits, 51(5), 356.
  • Murmansk Oblast
    • Khibiny Massif
[var: Ankangite]
South Africa
  • Free State
    • Lejweleputswa District
      • Theunissen
        • Theunissen kimberlite field
Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa. Roger H. Mitchell and Henry O. A. Meyer (1989) Niobian K-Ba-V Titanates from Micaceous Kimberlite, Star Mine, Orange Free State, South Africa. Mineralogical Magazine 53:451-456
Mineral and/or Locality  
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