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 Carbonate Group 
     
 
	
	
	
	
	
         Sharred Properties: 
	Crystal system: Trigonal 
	Colour in PPL: colourless 
	Pleochroism: none 
	Relief: low to moderate 
	Distinction: extreme birefringence, cleavage, variable relief distinct from other minerals 
                                                                     
	 
	Minerals in the Carbonate group:
	 
	
	
	
	
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