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Formation of Anthracite and Evaporite


Formation

Formation
Evaporite is water-soluble mineral sediment which forms from concentration and crystallization by evaporation from an aqueous solution.   
Anthracite forms from the accumulation of plant debris in a swamp environment. When plant debris dies and falls into the swamp, the standing water of the swamp protects it from decay.   

Composition
  
  

Mineral Content
Calcite, Cancrinite, Gypsum, Kyanite, Magnetite   
Calcite, Clay, Clay Minerals   

Compound Content
CaMg(CO3)2, CaO, Calcium Sulfate, KCl, MgO, NaCl   
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism   
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism   

Weathering
No   
No   

Types of Weathering
Not Applicable   
Not Applicable   

Erosion
No   
No   

Types of Erosion
Not Applicable   
Not Applicable   

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