Tags: Chemical Substance, Mineral.
Leadhillite is a lead sulfate carbonate hydroxide mineral often associated with anglesite. It has the formula Pb4SO4(CO3)2(OH)2. Leadhillite crystallises in the monoclinic system but develops pseudo-hexagonal forms due to crystal twinning. It forms transparent to translucent variably coloured crystals with an adamantine lustre.
