Jankovićite, Tl5Sb9(As, Sb)4S22, a new TI-sulfosalt from Allchar, Macedonia

Abstract

A hitherto unknown TI-sulfosalt, containing antimony and arsenic, was discovered by ore microscopy (including quantitative reflectance measurements) and electron microprobe analysis in samples from the Allchar TI-Sb-As sulfide ore deposit (Macedonia). The chemical formula is TI5Sb9(As,Sb)4S22, X-ray single crystal and powder diffration data gave the lattice parameters αo = 7.393(4) Å, b0 = 8.707(2) Å, co = 17.584(3) Å, α = 103.81(1)°, β = 91.79(1)°, γ = 109.50(1)°; space group {Mathematical expression}, Z = 1. The new mineral and the new mineral naine "jankoviéite" have been approved by the IMA/CNMMN. © 1995 Springer-Verlag.