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Feldspar & Pegmatites

FELDSPAR & PEGMATITES Natural fluxing agents for whiteness and superior translucency in tableware and sanitaryware

Feldspar and pegmatite play vital roles during firing as they are used as the main vitrifying or fluxing agent in ceramic bodies. Using feldspar and pegmatite in tableware and sanitaryware production strengthens and ensures the durability of fired bodies.

Imerys feldspars and pegmatites are characterized by their high potassium content and low iron and titanium content, which are essential for whiteness and translucency in tableware and sanitaryware

Through a stringent control of production processes, Imerys is able to design feldspars that provide tableware manufacturers with the assurance that the fusibility of the product satisfies technical requirements. 

Pegmatites are rocks composed of several minerals, usually potassium feldspar, quartz and kaolin, which give a natural fluxing capability and, because of low coloring oxides, are especially suitable for white tableware.

Imerys can assist customers in ensuring that the proportions of feldspar in the body recipe are exactly right to avoid over vitrification during firing.


Imerys mines and processes feldspar at its operations in France, Turkey, Thailand and India. We also have pegmatite production facilities in Germany.


All Technical Data Sheets and Brochures are available from our secured Download Center.


We have major ceramics technology centers in Europe, the Americas and Asia offering a full range of technical and process support services to help you match the right solution to your application requirement.

And with Industrial facilities and blending platforms in Asia, Europe, Middle-East and the Americas, we have the resources to serve our customers anywhere in the world.

Please contact us, we will be only too happy to help

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