In general, highest beneath hills and lowest beneath valleys. Also referred to as water table . Synonymous with tablemount. O. A soft, common mineral in sedimentary rocks , where it sometimes occurs in thick beds interstratified with limestones and shales . Sometimes occurs as layer under bed of rock salt since it is one of first minerals to crystallize on evaporation of seawater.
Alabaster is a fine-grained massive variety of gypsum.
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