Hydrohalite
NaCl·2H2OIMA symbol: Hhlgrandfathered
Hydrohalite is a halide mineral with the formula NaCl·2H2O, crystallizing in the monoclinic system. It has a calculated density of 1.654 g/cm3.
Crystallography
| Crystal system | monoclinic crystal systemWikidata (CC0) |
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| Space group | P 1 21/c 1 |
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| Cell (Å, °) | a = 6.3313, b = 10.1178, c = 6.5029; α = 90, β = 114.407, γ = 90 |
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| Cell volume | 379.341 ų, Z = 4 |
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| Axial ratios | 0.6258:1:0.6427calculated from COD 9011148 |
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| Source structure | COD 9011148 (Acta Crystallographica, Section B, 1974) |
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Powder X-ray diffraction (calculated)
| d (Å) | 2.42 | 2.605 | 3.846 | 2.696 | 1.987 | 2.911 |
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| I/I₀ | 100 | 53.6 | 35.7 | 34.8 | 28 | 27.6 |
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xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9011148; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 1.654 g/cm³calculated from COD 9011148 |
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Chemistry (calculated)
| Molecular weight | 94.47 g/molcalculated from the IMA formula |
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| Composition (wt%) | Na 24.33%, Cl 37.53%, H 4.27%, O 33.87% |
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Classification
| Nickel-Strunz (10th) | 3.BA.05Wikidata (CC0) |
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| Nickel-Strunz (9th) | 3.BA.05Wikidata (CC0) |
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