Muscovite Mica is a hydrated silicate of potassium and aluminium. 

Phlogopite Mica is a hydrated silicate of potassium and magnesium. 

Biotite is a common phyllosilicate mineral within the mica group, with the approximate chemical formula K(Mg, Fe)3AlSi3O10(F, OH)2. 

Appearance: Flakes or powder 

Origins: China

 

Applications: 

The flexibility of mica flakes together with it's high aspect ratio provides beneficial properties in both polymer and cementicious systems. In plastics mica increases rigidity, maximum working temperatures and dimensional stability. In cementicious systems, mica prevents shrinkage and cracking - vital characteristics in fire protection boards and coatings. 

 

Mica reinforces surface coatings and prevents cracking in marine, industrial and decorative formulations. Automotive products, fire extinguishers, fire protection coatings and welding rods all utilise the combined properties of this fascinating mineral. 

 

Toxicology

Non-toxic (please refer to MSDS) 

 

Important Properties

Micas are characterised by a sheet or plate like structure which because of its excellent basal cleavage enables particles of high aspect ratio to be produced. These lamellar particles are fleixible, tough, relatively soft, have a low co-efficient of thermal expansion, exceptional electrical properties and excellent chemical resistance 

 

Mica Powder Grades

Dry ground: 20mesh, 40mesh, 60mesh, 80mesh, 100mesh, 

200mesh, 325mesh, 400mesh, 500mesh, 600mesh, 

800mesh, 1000mesh, 1250mesh, 2500mesh

Wet ground: 100mesh, 200mesh, 250mesh, 325mesh, 400mesh, 600mesh 

 

In addition to the standard range of mica product above GWM can manufacture mica grades tailored to customers specific requirements (Micronised and/or Calcined mica flakes, scraps, powder).