Amorphous Particle to Aragonite Crystal (video) DOE/Pacific Northwest National Laboratory Loading video... Caption Amorphous calcium carbonate (round particle) forms and grows in size, then transforms into aragonite, which looks like bundles of wheat. The aragonite consumes almost the whole particle of amorphous calcium carbonate. Credit Nielsen et al. 2014/Science Usage Restrictions Credit Nielsen et al. 2014/Science Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.