Aragonite

Description

Crystal structure of of the carbonate mineral aragonite (CaCO3). Blue: Ca, brown: C, red: O. The model was produced in the freeware [Vesta](https://jp-minerals.org/vesta/en/), using crystallographic data from de Villiers (1971), downloaded from the [American Mineralogist Crystal Structure Database](http://rruff.geo.arizona.edu/AMS/amcsd.php).