| Id | 37 |
| Identification Type | Mineral |
| Name | Aragonite |
| Distinguishing Features | Rice-shape
Acicular Elongate High-birefringence |
| Description | Transparent colorless. Nonpleochroic. Extreme birefringence. Distinguished by small (~10 um) acicular (needle-like) or rice-like grain morphology. Moderate relief, varying by direction. Twinning may be common.
Organisms such as pteropods, most mollusks, and some corals produce biogenic aragonite. |
| Tags | Carbonate salt transparent colorless |
| External Resources | Aragonite on MinDat |
| Imposters | |
| Images |
116 Church Street NE, Minneapolis, MN 55455
P: 612-626-7889
