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Katophorite from
Djebel Guettara Mn deposit, Es Sebt, Azzaba District, Skikda Province, Algeria


Locality type:Deposit
Classification
Species:Katophorite
Formula:Na(CaNa){Mg4Al)(AlSi7O22)(OH)2
Comments:Byramjee R.and Meindre M.(1956)publish the following normalized amphibole composition:

(Na0.394K0.243)0.637(Na1.242Ca0.758)2.00(Mg4.139Mn0.311Fe0.068Al0.471Ti0.010)5.00(Si7.894Al0.106)O22((OH)2.

Their data does not give a Fe3+/(Fe3+ + Fe2+) ratio, but charge balance calculations give sufficient Fe3+ for the amphibole to fall within the katophorite range as defined by Hawthorne et al. (2012)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Katophorite data
Locality Data:Click here to view Djebel Guettara Mn deposit, Es Sebt, Azzaba District, Skikda Province, Algeria
Data Identifiers
Mindat Occurrence Record ID:907405
Long-form Identifier:1:3:907405:7
GUID (UUID V4):0
References
Byramjee R.and Meindre M.(1956): Le gisement de manganÃĻse de Guettara. Symposium du manganÃĻse XX congrÃĻs international de gÃĐologie,
 
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