Amorphous CaCO3: calcium carbonate that lacks a crystalline structure, or whose internal is so irregular that there is no characteristic external form. The term does not preclude the existence of any degree of order (Derived from Neuendorf et al. 2005)
- [[AmorphousCaCO3|Amorphous CaCO3]]
- Neuendorf, K. K. E.; Mehl, J. P.; Jackson, J. A. (2005) Glossary of Geology (Fifth Edition). Alexandria, Virginia, USA; American Geological Institute.