Feldspar are aluminosilicates with varying amounts of K, Na and Ca in a solid solution series; the main commercial feldspars lie between the sodium(albite) and potash (Microcline) rich end members, and the sodium end of the sodium-calcium series (Oligoclase).

Properties & uses

In glassmaking feldspar is used a source of Al2O3, Na2O, and/or K2), and SiO2 [borosilicate glass; soda-lime glass; fiberglass; TV tube glass]. The alumina enhances the workability of molten glass, increases the resistance of glass to chemical corrosion, improves the hardness and durability, and inhibits devitrification,

In ceramics, feldspar acts as a flux to form a glassy phase in bodies [vitreous and semi vitreous china; wall & floor tile; sanitary ware; electrical porcelain; frits, glazes & enamels].

Feldspar is also used as a mild abrasive [scouring powders] and welding rod coating;

With properties such as sub-angular particle shape, H 6-6.5, G.E. brightness 0f 82-92%, non-photo reactivity, and low free silica content, fine-ground feldspar is a useful filler.

Quality & specifications:

Soda spar is preferred in glass and potash spar in ceramics.

Glass grade feldspar: 4-6% K2O, 5-7% Na2O, 19% Al2O3 with a max 0.08% Fe2O3.

Pottery grade feldspar: 5-14% K2O, with max 0.07% Fe2O3.

Grades we offer

We offer grades of sodium and potassium bases feldspar for the ceramic industry. For further details on grades available and offers please contact us.


We are glad that you preferred to contact us. Please fill your requirement and one of our friendly team members will share the Best Quote with you soon. Or Contact Us: our phone number is: 9176348581

Phone number:
Email address*:
Get a quote from the us for the required product - Please Mention the Product Name, Grade, Quantity and Quantiy Unit*:
Enter web form code*: Contact Us form
* - required fields.

Form is not available. Please visit our contact page.
Get a quote!