Sodium-Feldspar

Premium Na-Feldspar: Unfloated and Float-Grade Options Available

LOW-CARBON – HIGH-PERFORMANCE – PROVEN SINCE ANTIQUITY
A Future-Proof Additive for Climate-Friendly-Cements

The benefits of natural pozzolan – or trass – are not new – the Romans used it more than 2,000 years ago to build long-lasting, water-resistant structures like aqueducts and harbor installations. Today, it is a smart solution for modern concrete: by reducing the amount of clinker required in cement, pozzolan helps cut carbon emissions while supporting long-lasting, high-performance construction.

Natural pozzolan (also known as trass or volcanic ash) is a finely ground material of volcanic origin with high reactivity. Recognized under international standards such as DIN EN 197-1 (Type II – Pozzolan) and ASTM C618 (Class N), it is officially classified as a supplementary cementitious material. When added to cement, it reacts with calcium hydroxide to form stable compounds that strengthen the concrete and improve its durability.

Locally Sourced Quality – From Türkiye
Our natural pozzolan comes from volcanic regions in central Türkiye. The material is light in color, highly reactive, and naturally low in impurities – ideal for producing sustainable and high-quality binders such as CEM II/B-P, CEM IV, or LC³ cements.

Na-Feldspar (Type: NaF2, NaF3, NaF3)

• Unfloated, but naturally low Fe2O3 content (0,3-0.6%)
• Low TiO₂ levels resulting from the rare presence of titanium-bearing accessory minerals such as rutile and titanite
• Light, uniform color even without flotation treatment
• Ideal for ceramic products, including tiles, porcelain, and sanitaryware
• Stable and consistent quality, ensured through regular XRF analysis and mineralogical evaluation

Flotation grade (NaFF)

For applications with higher purity requirements, the flotation grade NaF1, with Fe2O3 content of 0,06% (+/- 0,03) is available. The flotation process significantly reduces coloring oxide content, making it ideal for high-end ceramics, including gres porcellanato (porcelain stoneware).

Large Stockpile

• Mined in Western Anatolia, with intermediate storage at the port of Güllük.
• Thanks to its strategic location near the port of Güllük and substantial stockpiles both at the port and at the quarry, the feldspar can be shipped efficiently and promptly in bulk, typically via bulk carriers, ensuring smooth and reliable deliveries to international customers.

BRANCHES

• Ceramics Industry

• Glass Industry

• Refractories Industry

• Paints & Coatings Industry

APPLICATIONS

Ceramic bodies
Glazes and enamels
Glass manufacturing
Fiberglass production
Electro-porcelain and technical ceramics
Frits and pigments

CHEMICAL PARAMETERS

(average values)

• SiO2 670

• Al2O3 17,91

• Fe2O3 0,30-0,75

• TiO2 0,32

• CaO 0,83

• MgO 0,74

• P2O5 0,25

• Na2O3 9,23

• K2O 0,73

• L.o.I 0,344

• Humidity 0,3; max. <3

All information provided herein is for general and non-binding information purposes only and is not guaranteed to be accurate or complete. It does not constitute a general warranty of product characteristics.

PHYSICAL PROPERTIES

Density 2,6 kg/l
Hardness (MOHS)
Particle size (available) 0-9 mm
Particle size > 0,6mm max. 0,1

MINEROLOGY

Albit 81,54%
Biotite 1,61%
Hydropxylap 0,40%
Muscovite 0,81%
Pylogopit 0,83%
Quartz 13,80%
Free SiO2 Ø 4,8 %

CAS-Nr. (Na-Feldspat / Feldspat-Group): 68476-25-5
Hazardous material: No
Origin/Quarry: West Anatolia (Aegean coast)

All information provided herein is forgeneraland non-binding information purposes only and is not guaranteed to be accurate or complete. It does not constitute a general warranty of product characteristics.

Logistics

Most of our products are primarily shipped in bulk.
For testing purposes, container shipments can be arranged upon request.
Port: Güllük (Milas/Muğla) / Turkey

Note: All technical specifications are provided without warranty; verification is the customer’s responsibility.

Sodium-Feldspar

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