Mineral Factbook

Jacobsite

Mn2+Fe3+2O4IMA symbol: Jcbapproved

Jacobsite is an oxide or hydroxide mineral with the formula Mn2+Fe3+2O4, crystallizing in the cubic system. It has a calculated density of 4.764 g/cm3.

Photos

Jacobsite specimen photo
Ra'ike (see also: de:Benutzer:Ra'ike) · CC BY-SA 3.0 · Commons
Jacobsite specimen photo
Leon Hupperichs · CC BY-SA 3.0 · Commons
Jacobsite specimen photo
Dan Holtstam and Luca Bindi · CC BY 4.0 · Commons
Jacobsite specimen photo
Kelly Nash · CC BY 3.0 · Commons

Crystallography

Crystal systemcubic crystal systemWikidata (CC0)
Space groupF d -3 m :2
Cell (Å, °)a = 8.4454, b = 8.4454, c = 8.4454; α = 90, β = 90, γ = 90
Cell volume602.366 ų, Z = 8
Axial ratios1.0000:1:1.0000calculated from COD 9005293
Source structureCOD 9005293 (European Journal of Mineralogy, 1997) — 1 of 4 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.5461.4931.6252.9862.1111.099
I/I₀10047.135.632.620.116.5

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9005293; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)4.764 g/cm³calculated from COD 9005293

Classification

Nickel-Strunz (10th)4.BB.05Wikidata (CC0)
Nickel-Strunz (9th)4.BB.05Wikidata (CC0)
Dana (8th)7.2.2.2Wikidata (CC0)