Talc(Soapstone)
Talc, commonly known in its rock form as soapstone, is a naturally occurring hydrous magnesium silicate mineral with the chemical formula Mg₃Si₄O₁₀(OH)₂. Renowned as the softest mineral on the Mohs hardness scale, talc possesses a unique combination of physical properties: an exceptionally greasy or soapy feel, high lamellarity (platy structure), low electrical and thermal conductivity, high chemical inertness, and an affinity for organic substances. While pure talc is highly prized for its extreme whiteness, soapstone represents a massive, talc-rich metamorphic rock that contains varying amounts of associated minerals like chlorite, amphiboles, and carbonates, rendering it highly machinable, dense, and chemically resistant.