Gallstone of unusual composition: calcite, aragonite, and vaterite.
A gallstone of almost perfect octahedral symmetry was composed of a mixture of crystallites of the three polymorphous forms of calcium carbonate: calcite, aragonite, and vaterite.
D000368:Aged; D002119:Calcium Carbonate / Q000032:analysis*; D002137:Calculi; D002769:Cholelithiasis; D005260:Female; D006801:Humans; D014961:X-Ray Diffraction
D002119:Calcium Carbonate