What elements in Talc?

Answer 1

Talc is an alteration mineral. It is formed by geological modification of some host rock. Most talc is formed from the alteration of dolomite (CaMg(CO3)2 or magnesite (MgO) in the presence of excess dissolved silica (SiO2). Altering serpentine or quartzite can also form talc. The different alteration routes form talcs that have significant differences in chemistry, color, morphology and impurities.

Minerals commonly associated with talc are, tremolite [(CaMg3(SiO3)4)], serpentine [(3MgO·2SiO2·2H2O)], anthophyllite [Mg7·(OH)2·(Si4O11)2)], magnesite, mica and chlorite. The latter is a talc-like mineral in which varying proportions of aluminum are substituted for magnesium in the brucite layer. Other impurities such as dolomite, the calcite form of calcium carbonate (CaCO3), iron oxide, carbon, quartz, and manganese oxide may also be present.

Because of the alteration method of formation and the multiple routes of talc formation into talc deposits - even if they are close in distance - can be very different. Thus, in any general discussion of talc care must be taken in applying all attributes to all deposits. Most commercial talc properties can be readily identified by their chemistry and mineralogy. Not all deposits are suited for all applications. Talc is characterized by softness, hydrophobic surface properties, chemical inertness and a slippery feeling. Some commercial talc may be harder because of the presence of impurities and associated minerals such as dolomite, calcite, tremolite and quartz. Talc is inert in most chemical reagents.
Talc is the lowest (softest) material on the Mohs Hardness Scale.

Answer 2

The chemical formula of the mineral talc is Mg3Si4O10(OH)2 , magnesium, silicon, oxygen, and hydrogen.

Answer 3

Its a silicate mineral, specifically hydrated magnesium silicate

Answer 4

Talc is primarily composed of the elements magnesium, silicon, and oxygen. It is a mineral that is commonly used in various industries such as cosmetics and body powders.