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Aluminum Silicate or Sillimanite Powder

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Aluminum Silucate or Sillimanite Powder
Aluminum Silucate
: Al2SiO5
Aluminum Silucate is one of the three allotropic varieties of mineral corresponding to the formula Al2O3. SiO2. The other two are anadalusite and kyanite. They all contain 63.2% Al2O3. and 36.8% SiO2 They are distinguished from one another by their modes of occurrence and physical and optical properties. Sillimanite refractories cut into various shapes and sizes or made out of bonded particles are used in industries like cement, ceramics, glass-making, metal smelting, refinery and treatment, tar distillation, coal carbonisation, chemicals manufacture, and iron foundries.

Physical Characteristics:


  • Color is white, brown and green
  • Luster is silky when fibrous or vitreous otherwise
  • Transparency crystals are transparent to translucent
  • Crystal System is Orthorhombic; 2 / m2 / m2 / m
  • Crystal Habits include rare prismatic crystals but mostly fibrous masses
  • Cleavage is good in one direction lengthwise
  • Fracture is splintery
  • Hardness is 7.5 in large crystals but more fibrous forms are softer
  • Specific Gravity is approximately 3.2+ (above average)
  • Streak is white
  • Associated Minerals are garnets, biotite, feldspars, quartz, kyanite and andalusite
  • Other Characteristics: fibers are brittle distinguishing them from asbestos minerals
  • Notable Occurrences include Brazil, New England area and many European sites
  • Best Field Indicators are crystal habit, color, brittleness and hardness if not fibrous

Specifications:


Si0250.20%
CaO0.72%
MgO0.50%
Fe2O30.58%
Al2O345.40%
LOI1.86%


  • Packing: 25 to 50 kg bags
Note- Prices varies to 4 Rs/kg to 6 Rs/kg.
Prices may varies according to different locations.

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