99330bc4_ansing_Group__Southeast_Kansas__0
Crystal boundaries commonly are plane or smoothly curved. Where boundaries appear irregular, close scrutiny generally reveals them to be composed of short segments of plane surfaces. [Grain-growth mosaics] Crystal boundaries are irregularly curved. [0] 
Boundaries of individual crystals
KGS--Bull. 142, part 5--Marine Bank Limestones of Lansing Group, Southeast Kansas
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