Mineral Factbook

Feroxyhyte

Fe3+O(OH)IMA symbol: Foxapproved

Feroxyhyte is an oxide or hydroxide mineral with the formula Fe3+O(OH), crystallizing in the hexagonal system. It has a calculated density of 4.293 g/cm3. Its streak is yellow.

Photos

Feroxyhyte specimen photo
Gianandrea Ghirri · CC BY 3.0 · Commons
Feroxyhyte specimen photo
Gianandrea Ghirri · CC BY 3.0 · Commons
Feroxyhyte specimen photo
Gianandrea Ghirri · CC BY 3.0 · Commons
Feroxyhyte specimen photo
David Hospital · CC BY 4.0 · Commons

Crystallography

Crystal systemhexagonal crystal systemWikidata (CC0)
Space groupP -3 m 1
Cell (Å, °)a = 2.95, b = 2.95, c = 4.56; α = 90, β = 90, γ = 120
Cell volume34.4 ų, Z = 1
Axial ratios1.0000:1:1.5458calculated from COD 1008762
Source structureCOD 1008762 (Acta Crystallographica, Section B: Structural Science, 1983)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)1.7012.5551.4752.2291.1141.277
I/I₀10060.742.335.4216.9

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 1008762; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)4.293 g/cm³calculated from COD 1008762
Streak
yellowsingle sourceWikidata (CC0)

Classification

Nickel-Strunz (10th)4.FE.40Wikidata (CC0)
Nickel-Strunz (9th)4.FE.40Wikidata (CC0)