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Winchite from
Djebel Guettara Mn deposit, Azzaba area, Skikda Province, Algeria

Locality type:Deposit
Classification
Species:Winchite
Formula:☐{CaNa}{Mg4Al}(Si8O22)(OH)2
Comments:An analysis published by Byramjee R.and Meindre M.(1956) gives a composition near the richterite-winchite-katophorite join. The composition falls within a katophorite composition following the species definitions outlined in the amphibole nomenclature by Hawthorne et al.(2012). See the katophorite entry for more details.
Confirmation
Validity:Unconfirmed/Questioned
References
References:Byramjee R.and Meindre M.(1956): Le gisement de manganèse de Guettara. Symposium du manganèse XX congrès international de géologie,

Heflik W., 1989: Symplectic intergrowths in vulcanites from the Djebel Guettara manganese deposit (Northern Algeria). Mineralogia Polonica, vol. 20(2), 11-28
Data
Mineral Data:Click here to view Winchite data
Locality Data:Click here to view Djebel Guettara Mn deposit, Azzaba area, Skikda Province, Algeria
 
Mineral and/or Locality  
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