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Ferro-katophorite from
Isasca, Cuneo Province, Piedmont, Italy


Locality type:Commune
Classification
Species:Ferro-katophorite
Formula:Na(CaNa)(Fe42+Al)(AlSi7O22)(OH)2
Chemical Analyses:
Oxide wt%:
1
SiO248.86 %
TiO20.39 %
Al2O311.18 %
FeO17.28 %
MgO7.47 %
CaO2.93 %
Na2O7.95 %
K2O0.37 %
H2O2.02 %
Total:98.45 %
Empirical formulas:
1(Na0,798K0,07)?0,868 (Na1,489Ca0,466Fe0,045)?2 (Feii2,02Mg1,652Al1,205FeIII0,08Ti0,044)?5,001 (Si7,25Al0,75)?8 O22 ((OH)1,999O0,001)?2
Sample references:
1 -
Tropper, P., Manning, C. E., Essene, E. J., Kao, L.-S. (2000) The compositional variation of synthetic sodic amphiboles at high and ultra-high pressures. Contributions to Mineralogy and Petrology, 139 (2) 146-162 doi:10.1007/pl00007668
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ferro-katophorite data
Locality Data:Click here to view Isasca, Cuneo Province, Piedmont, Italy
Data Identifiers
Mindat Occurrence Record ID:250369
Long-form Identifier:1:3:250369:1
GUID (UUID V4):0
References
Hirajima, Takao, Compagnoni, Roberto (1993) Petrology of a jadeite-quartz/coesite-almandine-phengite fels with retrograde ferro-nybÃķite from the Dora-Maira Massif, Western Alps. European Journal of Mineralogy, 5 (5) 943-956 doi:10.1127/ejm/5/5/0943
 
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