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Chemical Properties of Ferro-katophorite
Formula
{Na}{CaNa}{Fe2+4Al}(AlSi7)O222
The katophorite group minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu.
Ferro-katophorite is defined with
A position: Na dominant
C2+ position: Fe dominant
C3+ position: Al dominant
W position: (OH) dominant
Elements listed
Al, Ca, Fe, H, Na, O, Si
Characteristics of Ferro-katophorite
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