Parisite-(Ce)
CaCe2(CO3)3F2IMA symbol: Pst-Cerenamed
Parisite-(Ce) is a carbonate or nitrate mineral with the formula CaCe2(CO3)3F2, crystallizing in the monoclinic system. It has a Mohs hardness of 4-5, typically brown, gray or orange in color, a specific gravity of 2. Its streak is white.
Photos
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Crystallography
| Crystal system | monoclinic crystal systemWikidata (CC0) |
|---|---|
| Space group | C 1 c 1 |
| Cell (Å, °) | a = 12.3049, b = 7.1056, c = 28.2478; α = 90, β = 98.2416, γ = 90 |
| Cell volume | 2444.3 ų, Z = 12 |
| Axial ratios | 1.7317:1:3.9754calculated from COD 9002265 |
| Source structure | COD 9002265 (American Mineralogist, 2000) — 1 of 2 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 13.978 | 3.552 | 4.659 | 2.823 | 2.827 | 2.825 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 86.9 | 80.8 | 59.4 | 58.9 | 58.4 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9002265; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 4.408 g/cm³calculated from COD 9002265 |
|---|---|
| Hardness (Mohs) | 4-5single sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Specific gravity | 2 g/cm3single sourceDana's System, 3rd Appendix (1915) |
| Color | brown, gray, orangesingle sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Streak | whitesingle sourceWikidata (CC0) |
Chemistry (calculated)
| Molecular weight | 538.33 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Ca 7.44%, Ce 52.06%, C 6.69%, O 26.75%, F 7.06% |
Classification
| Nickel-Strunz (10th) | 5.BD.20bWikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 5.BD.20bWikidata (CC0) |