| Coral's hard parts are composed of aragonite, a form of calcium carbonate. |
| Microscopic crystals of aragonite located in the inner ears of zebrafish control balance and hearing. |
| Vein minerals are aragonite, barite, calcite, dolomite, quartz, sphalerite, and whewellite. |
| Calcium carbonate may crystallize in either of two forms, calcite or aragonite. |
| The shell consists of carbonate of lime, under one or both of the forms known to mineralogists as calcite and aragonite. |
| Many limestones are rich in aragonite, but this in course of time tends to recrystallize as calcite. |
