Mineral Factbook

Heazlewoodite

Ni3S2IMA symbol: Hzlgrandfathered

Heazlewoodite is a sulfide or sulfosalt mineral with the formula Ni3S2, crystallizing in the trigonal system. It has a Mohs hardness of 4, a calculated density of 5.909 g/cm3.

Photos

Heazlewoodite specimen photo
Sharygin, V.V.; Ripp, G.S.; Yakovlev, G.A.; Seryotkin, Y.V.; Karmanov, N.S.; Izbrodin, I.A.; Grokhovsky, V.I.; Khromova, E.A. · CC BY 4.0 · Commons
Heazlewoodite specimen photo
HolDu · CC BY-SA 3.0 de · Commons
Heazlewoodite specimen photo
HolDu · CC BY-SA 3.0 de · Commons
Heazlewoodite specimen photo
Darla Sondrol · CC0 · Commons

Crystallography

Crystal systemtrigonal crystal systemWikidata (CC0)
Space groupR 3 2 :R
Cell (Å, °)a = 4.0718, b = 4.0718, c = 4.0718; α = 89.459, β = 89.459, γ = 89.459
Cell volume67.5 ų, Z = 1
Axial ratios1.0000:1:1.0000calculated from COD 9007640
Source structureCOD 9007640 (Acta Crystallographica, Section B, 1980) — 1 of 3 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.8661.8281.661.8144.0712.373
I/I₀1006562.553.152.840

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9007640; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)5.909 g/cm³calculated from COD 9007640
Hardness (Mohs)
4single sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight240.21 g/molcalculated from the IMA formula
Composition (wt%)Ni 73.3%, S 26.7%

Classification

Nickel-Strunz (10th)2.BB.05Wikidata (CC0)
Nickel-Strunz (9th)2.BB.05Wikidata (CC0)