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Ferri-winchite from
Kajlidongri Mine, Jhabua District, Madhya Pradesh, India


Locality type:Mine
Classification
Species:Ferri-winchite
Formula:◻(NaCa)(Mg4Fe3+)Si8O22(OH)2
Comments:The material published as winchite by Fermor(1904,1909) and Leake et al (1986) corresponds to a ferri-winchite composition with the following composition:

(Na0.21K0.10)0.31(Na0.73Ca1.27)2.00(Mg4.26Mn2+0.08Fe3+0.55Al0.09)5.00(Si7.78Al0.22)8.00O22(OH)2
Colour:colorless, violet
Confirmation
Validity:Confirmed
Confirmation Methods:EPMA
Data
Mineral Data:Click here to view Ferri-winchite data
Locality Data:Click here to view Kajlidongri Mine, Jhabua District, Madhya Pradesh, India
Data Identifiers
Mindat Occurrence Record ID:913321
Long-form Identifier:1:3:913321:1
GUID (UUID V4):0
References
Lewis Leigh Fermor (1904). A new form of blue amphibole from Central India. Records of the Geological Survey of lndia, 31, 235-236.
Fermor, Lewis Leigh (1909) The manganese ore deposits of India. Memoirs of the Geological Survey of India Vol. 37. Geological Survey of India
Leake, B. E., Farrow, C. M., Chao, F., Nayak, V. K. (1986) Winchite re-discovered from the type locality in India. Mineralogical Magazine, 50 (355) 173-175 doi:10.1180/minmag.1986.050.355.23
www.mindat.org (2013) http://www.mindat.org/article.php/1656/Amphiboles+from+the+Methamorphic+Manganese+Ores+of+Central+India
 
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