Vaterite
Ca(CO3)IMA symbol: Vtrapproved
Vaterite is a carbonate or nitrate mineral with the formula Ca(CO3), crystallizing in the hexagonal system. It has a Mohs hardness of 3-5, a specific gravity of 3.038.
Photos
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Crystallography
| Crystal system | hexagonal crystal systemWikidata (CC0) |
|---|---|
| Space group | C 1 |
| Cell (Å, °) | a = 12.353, b = 7.102, c = 25.733; α = 90.46, β = 99.78, γ = 90.24 |
| Cell volume | 2224.67 ų, Z = 36 |
| Axial ratios | 1.7394:1:3.6233calculated from COD 9017412 |
| Source structure | COD 9017412 (Crystal Growth & Design, 2013) — 1 of 17 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 2.059 | 2.048 | 2.056 | 3.569 | 3.555 | 3.551 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 98.2 | 96.4 | 94.2 | 93 | 92.7 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9017412; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 2.689 g/cm³calculated from COD 9017412 |
|---|---|
| Hardness (Mohs) | 3-5single sourceDana's System, 3rd Appendix (1915) |
| Specific gravity | 3.038 g/cm3single sourceDana's System, 3rd Appendix (1915) |
Chemistry (calculated)
| Molecular weight | 100.09 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Ca 40.04%, C 12%, O 47.96% |
Classification
| Nickel-Strunz (10th) | 5.AB.20Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 5.AB.20Wikidata (CC0) |