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====Anhydrite and gypsum====
 
====Anhydrite and gypsum====
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Anhydrite and gypsum frequently remain in gauge if pure, but shaly intervals may be washed out.
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Anhydrite and [[gypsum]] frequently remain in gauge if pure, but shaly intervals may be washed out.
    
====Halite and potash salts====
 
====Halite and potash salts====

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