Mineral Factbook

Jalpaite

Ag3CuS2IMA symbol: Jalgrandfathered

Jalpaite is a sulfide or sulfosalt mineral with the formula Ag3CuS2, crystallizing in the tetragonal system. It has a calculated density of 6.783 g/cm3. Its streak is black.

Photos

Jalpaite specimen photo
Darla Sondrol · CC0 · Commons
Jalpaite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons
Jalpaite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons
Jalpaite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemtetragonal crystal systemWikidata (CC0)
Space groupI 41/a m d :2
Cell (Å, °)a = 8.6705, b = 8.6705, c = 11.7573; α = 90, β = 90, γ = 90
Cell volume883.885 ų, Z = 8
Axial ratios1.0000:1:1.3560calculated from COD 9012598
Source structureCOD 9012598 (Australian Journal of Chemistry, 1992)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.3562.8072.7562.4332.1222.485
I/I₀10074.966.861.546.636

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9012598; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)6.783 g/cm³calculated from COD 9012598
Streak
blacksingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight451.28 g/molcalculated from the IMA formula
Composition (wt%)Ag 71.71%, Cu 14.08%, S 14.21%

Classification

Nickel-Strunz (10th)2.BA.45Wikidata (CC0)
Nickel-Strunz (9th)2.BA.25cWikidata (CC0)