Ceramic Glaze Soda Feldspar

Used extensively in both clay up to 25 and glaze up to 100.

Ceramic glaze soda feldspar.

Crystalline minerals made up of mainly silica and alumina in combination with sodium and potassium oxides. Sodium feldspars kona f 4 nepheline syenite 270x nepheline sy enite 400x. Albite mineral from which soda feldspar is derived often tends to be white in appearance compared with the pinkish hue of orthoclase mineral from which potash feldspar is ground. Quantity discounts are available.

Notice there is no melting at all at cone 4. A soda feldspar cone 4 7. Minspar 200 is a 200 mesh flotation grade soda feldspar. Contains mainly potassium but also has sodium and calcium.

In many cases soda and potash feldspar are interchangeable in glaze recipes. In both applications they provide additional alumina al2o3 and silica sio2. Potash feldspars such as custer and g 200. Feldspar is an important ingredient in clay bodies and glazes.

However some differences will be apparent. Soda feldspar normally melts better. Also serious crazing is highlighted on the cone 6 sample it is also happening at cone 5 and 7. F4 is no longer availab.

Pure soda feldspar minspar 200 fired like a glaze at cone 4 5 6 and 7 on porcelainous stoneware samples. Issues surrounding substitution with complex materials knao vs. The bottom samples are balls that have melted down at cone 7 and 8. Nepheline syenite is actually a rock composed of potash and soda feldspars plus the mineral nepheline a sodium.

Often considered a natural frit. Potash feld spars custer g 200 k200 and primas p no longer available are buckingham oxford yankee clinchfield 202 key stone maine madoc h a 3 and el brook. Feldspar one of the most common materials found in glazes can be classified into three groups. Potassium is preferred for high fire glazes.

K2o na2o evaluation substitution rules vs. The potassium fluxes include. Quantity discounts are available. Which are true mineral names.

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