Proto-Calcite and Proto-Vaterite in Amorphous Calcium Carbonates
✍ Scribed by Dr. Denis Gebauer; Dr. Philips N. Gunawidjaja; Dr. J. Y. Peter Ko; Dr. Zoltán Bacsik; Baroz Aziz; Lijia Liu; Dr. Yongfeng Hu; Prof. Lennart Bergström; Dr. Cheuk-Wai Tai; Prof. Tsun-Kong Sham; Dr. Mattias Edén; Dr. Niklas Hedin
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 473 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0044-8249
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## Abstract Raman spectroscopy is a powerful tool in identifying different calcium carbonate polymorphs. Here, the method is applied to cultured pearls from freshwater (genus __Hyriopsis__) and marine bivalve species (__Pinctada maxima__) as well as to shells of __Diplodon chilensis patagonicus__ b
**Amorphous calcium carbonate** is produced as spherical particles (see Figure) via in‐situ generation of CO~2~ by hydrolysis of dialkyl carbonates in aqueous solution of CaCl~2~ at room temperature. This method of synthesis (precipitation) allows detailed studies of the particle formation process.