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Calcium Carbonate (CaCO3)


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Imerys combine good quality feed materials, state of the art processing techniques and in depth market knowledge to generate a portfolio of products for the paint, plastics, film, adhesives and rubber industries.

 

Imerys Carbonates provides Ground Calcium Carbonate (GCC) directly from natural sources and Precipitated Calcium Carbonate (PCC), manufactured from calcium oxide (CaO) to various markets for a wide range of applications.

 

Geology

Calcium Carbonate is a polymorph, a mineral with different structures but the same chemical formula and generally sediments on the sea bed.

 

Geological movements combined with the drying of oceans leaves chalk deposits. Clays and soil components are deposited with time, some may permeate into chalk.     Minor compaction by late sediments becoming harder with formation of flints. Some compaction occurs to give harder limestone.      Volcanic activity leads to melting and recrystallisation as marble.  

 

1. Geological movements combined with the drying of oceans leaves chalk deposits. Clays and soil components are deposited with time, some may permeate into chalk.

 

2. Minor compaction by late sediments becoming harder with formation of flints. Some compaction occurs to give harder limestone.

 

3. Volcanic activity leads to melting and recrystallisation as marble.

 

Chalk (also known as whiting or chalk whiting) is usually fine textured, and varies in colour depending on the deposit. Limestone is highly compressed chalk and in it’s raw form is harder than chalk. Marble deposits are limestones changed by crystallisation under conditions of extreme heat and pressure. In some cases, this natural process yields pure marble of exceptional whiteness, such as the famous deposits at Carrara, Italy form where Imerys source material.

 

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©Imerys Minerals Ltd. 2012 | Registered office: Par Moor Centre - Par Moor Road - Par - Cornwall - PL24 2SQ UK | Company No: 269255