What is 'Feldspar Porcelain'?

Ceramic materials. About porcelain. The most common material for Rörstrand's products is feldspar porcelain – an extremely durable material which in fact is similar to how porcelain was made in China already in the 900's. read more

A general purpose porcelain recipe has silica, clay and feldspar or nepheline syenite (which is a feldspathiod). A basic common recipe is 25% of each kaolin, ball clay, feldspar and silica. It doesn't really make sense to call something a "feldspar porcelain". read more

Feldspar is a common raw material used in glassmaking, ceramics, and to some extent as a filler and extender in paint, plastics, and rubber. In glassmaking, alumina from feldspar improves product hardness, durability, and resistance to chemical corrosion. read more

Rather, a whole range of rocks geologically connected to granite are used. Most often, commercial feldspar is mined from pegmatite or feldspathic sand deposits. Aplite, which is a fine-grained igneous rock with the same mineralogical composition as granite, also is mined frequently for its feldspar content. read more