Rafael Molina-Rodriguez (Rafael Molina-Rodriguez) on fri 29 may 98
Clayarters :
Is K 200 a potash or soda feldspar? TIA.
Rafael
Dennis Davis on sat 30 may 98
Rafael Molina-Rodriguez (Rafael Molina-Rodriguez) wrote:
> ----------------------------Original message----------------------------
> Clayarters :
>
> Is K 200 a potash or soda feldspar? TIA.
>
> Rafael
K-200 and G-200 both are potash feldspars. An analysis from Hamill &
Gillespie (vintage unknown but at least 10 years old) for K-200 is:
67.10 SiO2
18.30 Al2O3
.07 Fe2O3
.36 CaO
Trace MgO
10.10 K2O
3.80 Na2O
LOI .18
Dennis in Stafford, VA
Grimmer on sat 30 may 98
Rafael Molina-Rodriguez (Rafael Molina-Rodriguez) wrote:
>
> ----------------------------Original message----------------------------
> Clayarters :
>
> Is K 200 a potash or soda feldspar? TIA.
>
> Rafael
Potash. It's got just about the highest K content of any spar.
Super for blue, blue, celadons. A current (or any) analysis
escapes me.
steve grimmer
marion, illinois
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