Siderophyllite
KFe2+2Al(Si2Al2)O10(OH)2IMA symbol: Sidapproved
Siderophyllite is a silicate mineral with the formula KFe2+2Al(Si2Al2)O10(OH)2. It has a calculated density of 3.258 g/cm3.
Crystallography
| Space group | P 31 1 2 |
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| Cell (Å, °) | a = 5.305, b = 5.305, c = 29.827; α = 90, β = 90, γ = 120 |
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| Cell volume | 726.961 ų, Z = 3 |
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| Axial ratios | 1.0000:1:5.6224calculated from COD 9005586 |
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| Source structure | COD 9005586 (European Journal of Mineralogy, 2003) — 1 of 9 structures |
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Powder X-ray diffraction (calculated)
| d (Å) | 9.942 | 2.612 | 2.424 | 3.314 | 2.161 | 3.124 |
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| I/I₀ | 100 | 43.3 | 31.2 | 24.1 | 23.4 | 22.2 |
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xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9005586; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 3.258 g/cm³calculated from COD 9005586 |
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Classification
| Nickel-Strunz (10th) | 9.EC.20Wikidata (CC0) |
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| Nickel-Strunz (9th) | 9.EC.20Wikidata (CC0) |
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