Difference between revisions of "Vaterite"
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==Physical and Chemical Properties== | ==Physical and Chemical Properties== | ||
| − | + | * Composition = CaCO3 | |
| − | * Hexagonal crystal system | + | * Color = Colorless |
| + | * Streak = White | ||
| + | * Mohs Hardness = 3 | ||
| + | * Density = 2.54 g/ml | ||
| + | * Refractive Index = 1.550, 1.650 | ||
| + | * Birefringence = 0.10 | ||
| + | * Hexagonal crystal system | ||
| + | * Morphology = Thin fibers, spherulitic aggregates | ||
* Reacts with acids to evolve carbon dioxide | * Reacts with acids to evolve carbon dioxide | ||
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==Resources and Citations== | ==Resources and Citations== | ||
| + | * Wikipedia: [https://en.wikipedia.org/wiki/Vaterite Vaterite] Accessed March 2025 | ||
* Mindat: [https://www.mindat.org/min-4161.html Vaterite] Accessed April 2024 | * Mindat: [https://www.mindat.org/min-4161.html Vaterite] Accessed April 2024 | ||
* R. Gettens, E. West Fitzhugh, R.Feller, "Calcium Carbonate Whites", ''Artists Pigments'', Vol. 2., A. Roy ed. Oxford University Press, Oxford, 1993. | * R. Gettens, E. West Fitzhugh, R.Feller, "Calcium Carbonate Whites", ''Artists Pigments'', Vol. 2., A. Roy ed. Oxford University Press, Oxford, 1993. | ||
Latest revision as of 11:33, 12 March 2025
Description
A rare crystalline form of Calcium carbonate that is composed of at least two different coexisting crystallographic structures. The major form exhibits hexagonal symmetry, while the minor form occurs within the nanodomains of the major matrix. Vaterite can occur as a biomineral in fish often formed by the dehydration of amorphous calcium carbonate.
Synonyms and Related Terms
vaterite (Port.); Vaterit (Deut.)
Physical and Chemical Properties
- Composition = CaCO3
- Color = Colorless
- Streak = White
- Mohs Hardness = 3
- Density = 2.54 g/ml
- Refractive Index = 1.550, 1.650
- Birefringence = 0.10
- Hexagonal crystal system
- Morphology = Thin fibers, spherulitic aggregates
- Reacts with acids to evolve carbon dioxide
Resources and Citations
- Wikipedia: Vaterite Accessed March 2025
- Mindat: Vaterite Accessed April 2024
- R. Gettens, E. West Fitzhugh, R.Feller, "Calcium Carbonate Whites", Artists Pigments, Vol. 2., A. Roy ed. Oxford University Press, Oxford, 1993.
- Mineralogy Database: Vaterite