Wollastonite

Wollastonite is chemically known as Calcium Meta Silicate denoted as CaSiO₃. Wollastonite Mineral is a naturally occurring white & acicular (needle shaped) mineral, with mohs hardness of 4.5. It is alkaline in nature, inert, has low loss on ignition, low water solubility, low co-efficient of linear thermal expansion and a melting point of 15400c. Wollastonite is used in various industrial applications as it improves tear strength, dielectric properties and retains mechanical properties at elevated temperatures. Additionally, we are one of the major Garnet Wollastonite Exporters and Suppliers in India.

• Calcium Oxide Cao 45.5 - 47.00
• Silica Sio₂ 48 - 49.50
• Maganesium Oxide Mgo 0.20
• Alumina Al₂o₃ 0.60
• Ferric Oxide Fe2o3 0.43
• Titanium Dioxide Tio₂ Traces
• Manganese Oxide Mno 0.29
• Sodium Oxide Na2o 0.02
• Potassium Oxide K₂o 0.11
• Loss On Ignition Loi 1.80 - 4.5

• Chemical Formula Casio3
• Molecular Weight 116
• Form & Habit Bladed Crystal Masses
• Crystal System Triclinic ( Acicular )
• Colour Brillant White
• Lustre Pearly
• Brightness 78% to 92%
• Refractive Index 1.627
• Specific Gravity 2.9
• Bulk Density
• Loose 0.33 to 0.55 Gm / Ml
• Tapped 0.60 to 0.95 Gm / Ml
• Hardness 4.5 ( Moh’s Scale )
• Oil Absorption 40 to 65 ( W/w )
• Ph of 10% Slurry ( Freshly Prepared ) 9.0 ( At Ambient )
• Solubility in Water 0.01%
• Melting Point 15400c
• Co-efficent of Expansion 6.5 X 10-6 (e0)-1
• Thermal Conductivity 350-600 C 2.16 (gm/cal ) ( Sec-0cx103)
• Chemical Activity Largely Inertdecomposes in Acids.
• Specific Heat 0.24 Cal / Gm0 C