Calcite Supplier and Exporters in India
A lime carbonate is known as CALCITE (CaCo3). It forms rhombohedrons when it crystallises. Calc-spar is another name for it. Depending on the impurities present, it can be pink, brown, or any other colour in addition to being white. It may be distinguished from other lime minerals with ease thanks to its distinct rhombohedral cleavage and hardness 3 on the Mohs scale. Although it shares the same chemical makeup as limestone, the latter is found in sedimentary strata. Aragonite is a different mineral with a similar chemical make-up. It forms an orthorhombic system of crystals. However, it is a brittle mineral that is primarily found in gypsum beds and coral reef test sites. It is not as common as calcite in terms of quantity.
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Specification of Calcite
Hardness | 3 (only on the basal pinacoidal faces, calcite has a hardness of less than 2.5 and can be scratched by a fingernail). |
Associated Minerals | Numerous but include these classic associations: Fluorite, quartz, barite, sphalerite, galena, celestite, sulfur, gold, copper, emerald, apatite, biotite, zeolites, several metal sulfides, other carbonates, and borates and many other. |
Chemical/Typical composition | CaO56.03 % |
Colour | Extremely variable but generally white or colorless or with light shades of yellow, orange, blue, pink, red, brown, green, black and gray. Occasionally iridescent. |
Characteristics | Refractive indices of 1.49 and 1.66 causing a significant double refraction effect (when a clear crystal is placed on a single line, two lines can then be observed), effervesces easily with dilute acids and may be fluorescent, phosphorescent, thermoluminescence and triboluminescent. |
Luster | Vitreous to resinous to dull in massive forms. |
Field Indicators | Crystal habit, reaction to acid, abundance, hardness, double refraction and especially cleavage. |
Features of Calcite
- Higher mechanical properties in thermoplastic applications.
- Higher flow properties.
- Prevents chalking.
- Gloss and whiteness in paints and powder coating applications.
- Excellent dispersion properties.
Applications of Soapstone
Polymers
Paints
