Mica

 

The mica group of sheet silicate (phyllosilicateminerals includes several closely related materials having close to perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition. The nearly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms.

 

The word "mica" is derived from the Latin word mica, meaning "a crumb", and probably influenced by micare, "to glitter".

 

 

For further information, please click on the link below:

 http://en.wikipedia.org/wiki/Mica

 

 


 

Source:

Wikipedia, The Free Encyclopedia

 


 

 

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