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Feldspars typically contain 5% or more free silica and thus pose similar hazards to quartz. They are employed in large percentages in almost all clay bodies and in most glazes. There are hundreds of different brand names, try to get a quartz content figure from your supplier.
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Feldspar
In ceramics, feldspars are used in glazes and clay bodies. They vitrify stonewares and porcelains. They supply KNaO flux to glazes to help them melt. |
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Nepheline Syenite Norwegian
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Covia Nepheline Syenite
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Custer Feldspar
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Nepheline Syenite
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Nepheline Syenite A270
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Pegmatite
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Feldspath ICE 10
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Spodumene
Spodumene is a lithium sourcing feldspar, an alternative to lithium carbonate to supply Li2O to ceramic glazes. Contains up to about 8% Li2O. |
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Calcium Feldspar
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Soda Feldspar
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Potash Feldspar
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Hazards |
Quartz Toxicity
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