Magnesiotaaffeite-2N'2S
Mg3BeAl8O16IMA symbol: Mtf-2N'2Srenamed
Magnesiotaaffeite-2N'2S is an oxide or hydroxide mineral with the formula Mg3BeAl8O16, crystallizing in the hexagonal system. It has a Mohs hardness of 8, a calculated density of 4.383 g/cm3. Its streak is white.
Photos
Crystallography
| Crystal system | hexagonal crystal systemWikidata (CC0) |
|---|---|
| Space group | P 63 m c |
| Cell (Å, °) | a = 5.6978, b = 5.6978, c = 18.373; α = 90, β = 90, γ = 120 |
| Cell volume | 516.565 ų, Z = 2 |
| Axial ratios | 1.0000:1:3.2246calculated from COD 9014621 |
| Source structure | COD 9014621 (The Canadian Mineralogist, 2012) |
Powder X-ray diffraction (calculated)
| d (Å) | 2.421 | 1.424 | 2.602 | 9.187 | 1.474 | 2.383 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 70.3 | 68.7 | 68.5 | 60.7 | 59.4 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9014621; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 4.383 g/cm³calculated from COD 9014621 |
|---|---|
| Hardness (Mohs) | 8single sourceWikidata (CC0) |
| Streak | whitesingle sourceWikidata (CC0) |
Chemistry (calculated)
| Molecular weight | 553.77 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Mg 13.17%, Be 1.63%, Al 38.98%, O 46.23% |
Classification
| Nickel-Strunz (10th) | 4.FC.25Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 4.FC.25Wikidata (CC0) |
| Dana (8th) | 7.2.11.1Wikidata (CC0) |