Supergénna síra z antimonitového ložiska Chyžné-Herichová, Slovenská republika
Tímea Bálintová, Peter Bačík, Martin Števko
Supergene sulphur was found in the abandoned mine adit of the Chyžné-Herichová hydrothermal antimony deposit. Mostly it forms yellow rounded crystals up to 1 mm, rarely have some crystals skeletal habit. Sulphur crystals growth on the weathered stibnite, kermesite, valentinite in association with amorphous secondary minerals of Sb in vugs of quartz-stibnite veins. Crystals of sulphur sometimes have a skeletal habit. The unit-cell parameters of sulphur are a = 1.4645(6), b = 12.8602(6), c = 24.4554(15) Å and V = 3291.1(2) Å3. Sulphur formed (sub)recently by the interaction of acid solutions which were produced by the weathering of pyrite or stibnite.