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Ankangite

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About AnkangiteHide

Formula:
Ba(Ti,V3+,Cr)8O16
Lustre:
Adamantine, Vitreous
Crystal System:
Tetragonal
Name:
For the type locality.
A variety of Mannardite

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


Classification of AnkangiteHide

Discredited
7.9.29

7 : Oxides and Hydroxides
9 : Oxides of Ti

Physical Properties of AnkangiteHide

Adamantine, Vitreous
Fracture:
Irregular/Uneven

Optical Data of AnkangiteHide

Type:
Uniaxial
Type:
Anisotropic
Anisotropism:
Distinct
Bireflectance:
Weak to distinct
Colour in reflected light:
Light rose-reddish grey
Pleochroism:
Weak
Comments:
O = pinkish grey, E = light pink, Orientation: E = c

Chemical Properties of AnkangiteHide

Formula:
Ba(Ti,V3+,Cr)8O16

Crystallography of AnkangiteHide

Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
I4/m
Cell Parameters:
a = 10.139 Å, c = 2.961 Å
Ratio:
a:c = 1 : 0.292
Unit Cell V:
304.39 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Prismatic crystals with {100} and {110}

First Recorded Occurrence of AnkangiteHide

Synonyms of AnkangiteHide

Other Language Names for AnkangiteHide

German:Ankangit
Spanish:Ankangita

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Ankangite associated with ZinkenitePb9Sb22S42
1 photo of Ankangite associated with PectoliteNaCa2Si3O8(OH)
1 photo of Ankangite associated with QuartzSiO2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.9.1HongquiiteTiO
7.9.2RutileTiO2Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
7.9.3AnataseTiO2Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
7.9.4BrookiteTiO2Orth. mmm (2/m 2/m 2/m)
7.9.5GeikieliteMgTiO3Trig. 3 : R3
7.9.6PerovskiteCaTiO3Orth. mmm (2/m 2/m 2/m) : Pnma
7.9.7KassiteCaTi2O4(OH)2Orth.
7.9.8TausoniteSrTiO3Iso. 4 3m
7.9.9CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38Trig. 3 : R3
7.9.10Lucasite-(Ce)CeTi2(O,OH)6Mon.
7.9.11HiboniteCaAl12O19Hex.
7.9.12Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.
7.9.13PyrophaniteMn2+TiO3Trig. 3 : R3
7.9.14Jacobsite-QT(Mn2+)M(Fe3+2)O4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
7.9.15IlmeniteFe2+TiO3Trig. 3 : R3
7.9.16PseudobrookiteFe2TiO5Orth. mmm (2/m 2/m 2/m)
7.9.17UlvöspinelTiFe2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.9.18PseudorutileFe2Ti3O9Hex.
7.9.19FreudenbergiteNa2(Ti,Fe)8O16Mon.
7.9.20KennedyiteFe2TiO5
7.9.21Armalcolite(Mg,Fe2+)Ti2O5Orth. mmm (2/m 2/m 2/m)
7.9.22Högbomite(Mg,Fe)2(Al,Ti)5O10Hex.
7.9.23Qandilite(Mg,Fe3+)2(Ti,Fe3+,Al)O4Iso. m3m (4/m 3 2/m) : Fd3m
7.9.24CafetiteCaTi2O5 · H2OMon. 2/m : P21/b
7.9.25Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38Trig.
7.9.26Lindsleyite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38Trig.
7.9.27PrideriteK(Ti4+7Fe3+)O16Tet.
7.9.28Jeppeite(K,Ba)2(Ti,Fe)6O13Mon.
7.9.30Ecandrewsite(Zn,Fe2+,Mn2+)TiO3Trig. 3 : R3
7.9.31LandauiteNaMnZn2(Ti,Fe)6Ti12O38Trig. 3 : R3

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 AnkangiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Xiong Ming, Ma Zhesheng, Peng Zhizhong (1988) A new mineral - ankangite. Chinese Science Bulletin [Kexue Tongbao]: 33(18): 1401-1404. [in Chinese]
Xiong Ming, Ma Zhesheng, Peng Zhizhong (1989) A new mineral - ankangite. Chinese Science Bulletin [Kexue Tongbao]: 34(7): 592-596. [in Chinese]
Jambor, J.L., Burke, E.A.J. (1991) New mineral names. American Mineralogist: 76: 2020-2026.
Wu, X.J., Li, F.H., Hashimoto, H. (1990) Electron microscope study of the incommensurately modulated structure of ankangite. Acta Crystallographica: 46: 111-117.
Nicheng, S., Zhesheng, M., Wei, L. (1991) Crystal structure determination of ankangite with one-dimensional incommensurate modulation. Acta Petrologica et Mineralogica: 10(8): 233-245. [in Chinese with English abstract]
Jambor, J.L., Puziewicz, J. (1992) American Mineralogist: 77: 1116-1121. [abstract]
Anthony, J.W., et al. (1997) Handbook of Mineralogy, Vol. 3, 15.
Biagioni, C., Capalbo, C., Pasero, M. (2013) Nomenclature tunings in the hollandite supergroup. European Journal of Mineralogy: 25: 85-90.

Internet Links for AnkangiteHide

Localities for AnkangiteHide

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.
Brazil
 
  • Minas Gerais
Dr Jaroslav Hyrsl specimen, 2-2012,
Tony Nikischer specimen and analysis; Jaroslav Hyrsl specimens
China (FRL)
 
  • Shaanxi
    • Ankang
      • Hanbin District
Am Min 76 (1991), 2020
Italy
 
  • Tuscany
    • Lucca Province
      • Stazzema
        • Sant'Anna di Stazzema
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.
Russia
 
  • Irkutsk Oblast
    • Lake Baikal area
      • Slyudyanka (Sludyanka)
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.
  • Murmansk Oblast
    • Khibiny Massif
Menshikov, Y. P., Mikhailova, Y. A., Pakhomovsky, Y. A., Yakovenchuk, V. N., & Ivanyuk, G. Y. (2015). Minerals of zirconolite group from fenitized xenoliths in nepheline syenites of Khibiny and Lovozero plutons, Kola Peninsula. Geology of Ore Deposits, 57(7), 591-599.
 
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