Amesite
Mg2Al(AlSiO5)(OH)4IMA symbol: Amegrandfathered
Amesite is a silicate mineral with the formula Mg2Al(AlSiO5)(OH)4, crystallizing in the triclinic system. It has a calculated density of 2.708 g/cm3.
Crystallography
| Crystal system | triclinic crystal systemWikidata (CC0) |
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| Space group | C 1 |
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| Cell (Å, °) | a = 5.299, b = 9.181, c = 14.05; α = 90.06, β = 90.3, γ = 90 |
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| Cell volume | 683.524 ų, Z = 4 |
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| Axial ratios | 0.5772:1:1.5303calculated from COD 9015989 |
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| Source structure | COD 9015989 (Clays and Clay Minerals, 1997) — 1 of 4 structures |
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Powder X-ray diffraction (calculated)
| d (Å) | 7.025 | 3.512 | 2.475 | 2.483 | 2.478 | 2.481 |
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| I/I₀ | 100 | 77.5 | 20.8 | 20 | 18.7 | 18.7 |
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xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9015989; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 2.708 g/cm³calculated from COD 9015989 |
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Chemistry (calculated)
| Molecular weight | 278.68 g/molcalculated from the IMA formula |
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| Composition (wt%) | Mg 17.44%, Al 19.36%, Si 10.08%, O 51.67%, H 1.45% |
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Classification
| Nickel-Strunz (10th) | 9.ED.15Wikidata (CC0) |
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| Nickel-Strunz (9th) | 9.ED.15Wikidata (CC0) |
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