Majorite
Mg3(MgSi)(SiO4)3IMA symbol: Majapproved
Majorite is a silicate mineral with the formula Mg3(MgSi)(SiO4)3, crystallizing in the cubic system. It has a calculated density of 3.531 g/cm3.
Crystallography
| Crystal system | cubic crystal systemWikidata (CC0) |
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| Space group | I a -3 d |
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| Cell (Å, °) | a = 11.4833, b = 11.4833, c = 11.4833; α = 90, β = 90, γ = 90 |
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| Cell volume | 1514.26 ų, Z = 8 |
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| Axial ratios | 1.0000:1:1.0000calculated from COD 9002190 |
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| Source structure | COD 9002190 (American Mineralogist, 1999) — 1 of 8 structures |
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Powder X-ray diffraction (calculated)
| d (Å) | 2.568 | 1.535 | 2.871 | 1.592 | 2.448 | 2.252 |
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| I/I₀ | 100 | 68.5 | 56.4 | 44.7 | 34.7 | 26.2 |
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xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9002190; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 3.531 g/cm³calculated from COD 9002190 |
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Chemistry (calculated)
| Molecular weight | 401.55 g/molcalculated from the IMA formula |
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| Composition (wt%) | Mg 24.21%, Si 27.98%, O 47.81% |
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Classification
| Nickel-Strunz (10th) | 9.AD.25Wikidata (CC0) |
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| Nickel-Strunz (9th) | 9.AD.25Wikidata (CC0) |
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| Dana (8th) | 51.4.3a.5Wikidata (CC0) |
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