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Ankangite

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Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy
© Alessio Becucci

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Formula:
Ba(Ti,V
3+
 
,Cr)
 
8
O
 
16
System:TetragonalColour:Black
Hardness:6½
Name:For the type locality.
Synonym of:Mannardite


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

References for Ankangite

Reference List:

- +
Xiong Ming, Ma Zhesheng, and Peng Zhizhong (1988): A new mineral - Ankangite. Chinese Science Bulletin [Kexue Tongbao] 33(18), 1401-1404 (in Chinese). - American Mineralogist (1991), 76, 2020 (abstract).

Xiong Ming, Ma Zhesheng, and Peng Zhizhong (1989): A new mineral - ankangite. Chinese Science Bulletin [Kexue Tongbao] 34(7), 592-596 (in Chinese). - American Mineralogist (1992), 77, 1119 (abstract).

Wu, X. J., Li, F. H. and Hashimoto, H. (1990): Electron microscope study of the incommensurately modulated structure of ankangite. Acta Crystallographica 46, 111-117.

Nicheng, S., Zhesheng, M. and Wei, L. (1991): Crystal structure determination of ankangite with one-dimensional incommensurate modulation. Acta Petrolog. Mineral. 10(8), 233-245 (in Chinese with English abstract). - American Mineralogist (1992), 77, 1119 (abstract).

Anthony, J. W., et al. (1997): Handbook of Mineralogy, Vol. 3, 15.

Internet Links for Ankangite

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    • Localities for Ankangite

    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.
    Brazil
     
    • Minas Gerais
    		Tony Nikischer specimen and analysis
    China
     
    • Shaanxi Province
      • Ankang Prefecture
        • Hanbin District
    		Am Min 76 (1991), 2020
    Italy
     
    • Tuscany
      • Lucca Province
        • Apuan Alps
          • 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
     
    • Eastern-Siberian Region
      • Prebaikalia (Pribaikal'e)
        • Irkutskaya Oblast'
          • Lake Baikal area
            • Slyudyanka (Sludyanka)
    		Proceedings of the Russian Mineralogical Society 136(5), 65-75.
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
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