Wollastonite

Wollastonite is a calcium inosilicate mineral Mineral

Minerals are natural compounds formed through geological [i] processes. ... 

 that may contain small amounts of iron Iron

Iron is a chemical element [i] with the symbol Fe and atomic number [i] 26. ... 

, magnesium Magnesium

Magnesium is the chemical element [i] in the periodic table [i] that has the symbol Mg and atomic number [i] ... 

, and manganese Manganese

Manganese is a chemical element [i] in the periodic table [i] that has the symbol Mn and atomic number [i] ... 

 substituting for calcium. It is usually white. It forms when impure limestone Limestone

Limestone is a sedimentary rock [i] composed largely of the mineral [i] calcite [i] . ... 

 or dolostone is subjected to high temperature and pressure sometimes in the presence of silica-bearing fluids as in skarns or contact metamorphic rocks.

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Encyclopedia

Wollastonite is a calcium inosilicate mineral Mineral

Minerals are natural compounds formed through geological [i] processes. ... 

 that may contain small amounts of iron Iron

Iron is a chemical element [i] with the symbol Fe and atomic number [i] 26. ... 

, magnesium Magnesium

Magnesium is the chemical element [i] in the periodic table [i] that has the symbol Mg and atomic number [i] ... 

, and manganese Manganese

Manganese is a chemical element [i] in the periodic table [i] that has the symbol Mn and atomic number [i] ... 

 substituting for calcium. It is usually white. It forms when impure limestone Limestone

Limestone is a sedimentary rock [i] composed largely of the mineral [i] calcite [i] . ... 

 or dolostone is subjected to high temperature and pressure sometimes in the presence of silica-bearing fluids as in skarns or contact metamorphic rocks.

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