Brezinaite

Cr₃S₄IMA symbol: Bznapproved

Brezinaite is a sulfide or sulfosalt mineral with the formula Cr3S4, crystallizing in the monoclinic system. It has a calculated density of 4.292 g/cm3.

Crystallography

Crystal system	monoclinic crystal systemWikidata (CC0)
Space group	I 1 2/m 1
Cell (Å, °)	a = 5.694, b = 3.428, c = 11.272; α = 90, β = 91.5, γ = 90
Cell volume	219.943 Å³, Z = 2
Axial ratios	1.6610:1:3.2882calculated from COD 9007442
Source structure	COD 9007442 (Acta Crystallographica, 1957)

Powder X-ray diffraction (calculated)

d (Å)	2.047	2.619	2.019	1.66	5.634	2.514
I/I₀	100	99.4	79	70.6	56.2	49.2

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9007442; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)	4.292 g/cm³calculated from COD 9007442

Chemistry (calculated)

Molecular weight	284.25 g/molcalculated from the IMA formula
Composition (wt%)	Cr 54.88%, S 45.12%

Classification

Nickel-Strunz (10th)	2.DA.15Wikidata (CC0)
Nickel-Strunz (9th)	2.DA.15Wikidata (CC0)