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COVIA

Mica, Feldspar, & Clays

Covia, headquartered in Independence, Ohio, is a North American supplier of high-purity silica sand, nepheline syenite, feldspar, and other industrial minerals serving the glass, ceramics, coatings, foundry, polymers, and construction industries. The company traces its roots to Unimin Corporation, founded in 1970, and operates as part of the Sibelco minerals group.

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CRISTOBALEX 3

CRISTOBALEX 3

micronized cristobalite ultrawhite reflective filler

CRISTOBALEX 3 is an ultrawhite, lower-density thermally modified and micronized cristobalite silica filler developed for coatings, adhesives, and sealants, maximizing L* light reflectivity across the visible and solar spectrum with reduced TiO2 while enhancing UV, abrasion, surface hardness, and chemical resistance. Median particle size is 13.9 microns with 97 TAPPI brightness, L* 98.2, 2.32 g/cc specific gravity, and 23.4 oil absorption.

  • Silicas
  • Ground Silica
CRISTOBALEX 4

CRISTOBALEX 4

micronized cristobalite ultrawhite reflective filler

CRISTOBALEX 4 is an ultrawhite, lower-density thermally modified and micronized cristobalite silica filler developed for coatings, adhesives, and sealants, maximizing L* light reflectivity across the visible and solar spectrum with reduced TiO2 while enhancing UV, abrasion, surface hardness, and chemical resistance. Median particle size is 10.4 microns with 97 TAPPI brightness, L* 98.2, 2.32 g/cc specific gravity, and 25 oil absorption.

  • Silicas
  • Ground Silica
CRISTOBALEX IG 35

CRISTOBALEX IG 35

granular cristobalite ultrawhite reflective filler

CRISTOBALEX IG 35 is a coarse, granular ultrawhite thermally modified cristobalite silica filler (99.6% SiO2) for durable coatings and adhesives, maximizing L* light reflectivity across the visible and IR spectrum with reduced TiO2 while enhancing UV, abrasion, surface hardness, and chemical resistance. About 80% is retained between 50 and 70 mesh (297-210 microns), with L* 96.8, 2.32 density, 1.2 g/cm3 bulk density, and 6.5 Mohs hardness.

  • Silicas
  • Ground Silica
HIFILL N 1000

HIFILL N 1000

nepheline syenite functional mineral additive

HIFILL N 1000 is a functional nepheline syenite mineral additive for plastic and rubber systems, produced from an all-natural sodium-potassium-aluminum silicate and delivering improved scratch and mar resistance, weatherability, and PVC fusion characteristics with low oil absorption, low tint strength, and high dielectric strength. Median particle size is 11.0 microns with 1.5 m2/g surface area.

  • Mica & Feldspar
  • Nepheline Syenite
HIFILL N 1200

HIFILL N 1200

nepheline syenite functional mineral additive

HIFILL N 1200 is a functional nepheline syenite mineral additive for plastic and rubber systems, produced from an all-natural sodium-potassium-aluminum silicate and delivering improved scratch and mar resistance, weatherability, and PVC fusion characteristics with low oil absorption, low tint strength, and high dielectric strength. Median particle size is 13.5 microns with 1.0 m2/g surface area.

  • Mica & Feldspar
  • Nepheline Syenite

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