The difference between wollastonite and calcite
Publish Time:
2024-12-11
There are many differences between wollastonite and calcite in terms of chemical composition, crystal structure, physical properties, and uses. The following is a detailed comparison:
The main difference between wollastonite and calcite is their chemical composition, physical properties, application field and formation environment.
Chemical composition and physical properties
Wollastonite: The main component is calcium metasilicate (CaSiO), usually in the form of flake, radial or fibrous aggregates, and the color is mostly white, but it can also be gray, green or brown. Wollastonite has high hardness, low coefficient of thermal expansion, good electrical insulation and chemical stability.
Calcite: The main component is calcium carbonate (CaCO), with various shapes, including granular, block, fibrous, stalactite, soil, etc. Calcite colors are also diverse, including gray, gray, gray black, yellow, light red, brown red, etc.
application field
Wollastonite: widely used in ceramics, metallurgy, high whiteness products, reinforcing materials, fillers and other fields. Due to its high hardness, low coefficient of thermal expansion and good electrical insulation, wollastonite is widely used in industry.
Calcite: Mainly used in papermaking, food, feed and other fields. Due to its rich chemical composition and diverse shapes, calcite is widely used in industry and daily life.
forming environment
Wollastonite: Usually formed in medium to high temperature metamorphic and contact metamorphic environments, especially in the reaction zone between limestone or dolomite and intrusive rocks.
Calcite: mainly formed by the metamorphism of carbonate rocks, commonly found in sedimentary rocks
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