One of the rare characteristic of chatkalite is the fact that it has quaternary Bravais lattice metric singularity along with mawsonite.
2.
The mineral chatkalite and mawsonite are considered highly specialized because they can produce cubic I tetragonal P, orthorhombic F, and orthorhombic P lattices.
3.
"' Mawsonite "'is a brownish orange sulfosalt mineral, containing copper, iron, tin, and sulfur : Cu 6 Fe 2 SnS 8.