Lepidocrocite
Fe3+O(OH)IMA symbol: Lpcapproved
Lepidocrocite is an oxide or hydroxide mineral with the formula Fe3+O(OH), crystallizing in the orthorhombic system. It has a Mohs hardness of 5, a calculated density of 3.963 g/cm3.
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Crystallography
| Crystal system | orthorhombic crystal systemWikidata (CC0) |
|---|---|
| Space group | C m c m |
| Cell (Å, °) | a = 3.072, b = 12.516, c = 3.873; α = 90, β = 90, γ = 90 |
| Cell volume | 148.914 ų, Z = 4 |
| Axial ratios | 0.2454:1:0.3094calculated from COD 9017417 |
| Source structure | COD 9017417 (Crystallography Reports, 2001) — 1 of 8 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 6.258 | 3.293 | 2.474 | 1.941 | 1.525 | 1.937 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 73.3 | 64.3 | 26.5 | 23.3 | 22.6 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9017417; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 3.963 g/cm³calculated from COD 9017417 |
|---|---|
| Hardness (Mohs) | 5single sourceWikidata (CC0) |
Classification
| Nickel-Strunz (10th) | 4.FE.15Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 4.FE.15Wikidata (CC0) |
| Dana (8th) | 6.1.2.2Wikidata (CC0) |