Nosean
Na8(Si6Al6)O24(SO4)·H2OIMA symbol: Nsngrandfathered
Nosean is a silicate mineral with the formula Na8(Si6Al6)O24(SO4)·H2O, crystallizing in the cubic system. It has a Mohs hardness of 5.5, typically gray or smoky in color, with a resinous luster, a specific gravity of 2.37-2.4.
Photos
Crystallography
| Crystal system | cubic crystal systemWikidata (CC0) |
|---|---|
| Space group | P 2 3 |
| Cell (Å, °) | a = 9.001, b = 9.001, c = 9.001; α = 90, β = 90, γ = 90 |
| Cell volume | 729.243 ų, Z = 1 |
| Axial ratios | 1.0000:1:1.0000calculated from COD 9005322 |
| Source structure | COD 9005322 (European Journal of Mineralogy, 1998) — 1 of 3 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 3.675 | 6.365 | 2.598 | 2.122 | 9.001 | 2.846 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 88 | 50.5 | 32.7 | 27.6 | 19 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9005322; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 2.182 g/cm³calculated from COD 9005322 |
|---|---|
| Hardness (Mohs) | 5.5single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 2.37-2.4 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | gray, smokysingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | resinoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 1012.38 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Na 18.17%, Si 16.65%, Al 15.99%, O 45.83%, S 3.17%, H 0.2% |
Classification
| Nickel-Strunz (10th) | 9.FB.10Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 9.FB.10Wikidata (CC0) |
| Dana (8th) | 76.2.3.2Wikidata (CC0) |