Structure and Mineralogical Properties

Classic Neuburg Siliceous Earth is a natural combination of corpuscular, crypto-crystalline and amorphous silica and lamellar kaolinite: a loose mixture impossible to separate by physical methods. As a result of natural aging, the silica portion exhibits a round grain shape and consists of aggregated, crypto-crystalline primary particles of about 200 nm diameter which are coated partially opal-like. Such a unique structure is responsible for a relatively high specific area and oil absorption, which result, besides rheological activity, also in a whole range of application advantages.

Quick Incorporation
No Filler Agglomeration
Minimal Sedimentation
Excellent Dispersion
High Surface Activity
Excellent Extrusions Properties
Low Compression Set in Rubber Goods
Excellent Scratch Resistance in Plastics, Paints and Varnishes


Silica (corpuscular), Neuburg Siliceous Earth (18.000x)		Kaolinite (lamellar), (15.000x)		Neuburg Siliceous Earth (loose structure 10.000x)