Geikielite
MgTiO3IMA symbol: Gkgrandfathered
Geikielite is an oxide or hydroxide mineral with the formula MgTiO3, crystallizing in the trigonal system. It has a specific gravity of 3.976.
Crystallography
| Crystal system | trigonal crystal systemWikidata (CC0) |
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| Space group | R -3 :H |
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| Cell (Å, °) | a = 5.0567, b = 5.0567, c = 13.9034; α = 90, β = 90, γ = 120 |
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| Cell volume | 307.883 ų, Z = 6 |
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| Axial ratios | 1.0000:1:2.7495calculated from COD 9010587 |
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| Source structure | COD 9010587 (The Canadian Mineralogist, 2006) — 1 of 5 structures |
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Powder X-ray diffraction (calculated)
| d (Å) | 2.723 | 2.22 | 1.708 | 2.528 | 1.853 | 1.46 |
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| I/I₀ | 100 | 57.7 | 57.5 | 52.7 | 41.7 | 41.7 |
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xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9010587; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 3.889 g/cm³calculated from COD 9010587 |
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| Specific gravity | 3.976 g/cm3corroboratedDana's System, 2nd Appendix (1909) |
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Chemistry (calculated)
| Molecular weight | 120.17 g/molcalculated from the IMA formula |
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| Composition (wt%) | Mg 20.23%, Ti 39.83%, O 39.94% |
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Classification
| Nickel-Strunz (10th) | 4.CB.05Wikidata (CC0) |
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| Nickel-Strunz (9th) | 4.CB.05Wikidata (CC0) |
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| Dana (8th) | 04.03.05.02Wikidata (CC0) |
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