Home > Lead Minerals – December 31 > MS1148 Hydrocerussite with Leadhillite

Hydrocerussite with Leadhillite - Sold


Leadhillite is a hydrated lead carbonate and sulfate while hydrocerussite is a hydrated carbonate of lead. Leadhillite takes it name from its type locality in the Leadhills of Scotland (Beudant, 1832). Hydrocerussite takes its name from its chemistry, specifically water (hydro) and lead carbonate (cerussite) (Nordenskiöld, 1877).

This specimen consists of a confused mass of leadhillite prisms and blocky hydrocerussite crystals. The pseudohexagonal leadhillite crystals, to 5 mm, showing typical pearly luster on their face terminations. The blue color of the leadhillite is quite intense, arising from minute inclusions of diaboleite. The hydrocerussite forms elongated rhombohedral crystals to 1.0 cm, surficially altered to drusy cerussite. While many of the leadhillite crystals show cleavage, there is one side of the specimen free of damage. Consequently, this attractive Tiger specimen has a good display direction.

This specimen was part of the personal collection of Ralph Merrill, proprietor of the prolific mail order business Minerals Unlimited. Merrill obtained this piece from Matteson Minerals, celebrated supplier of Tiger specimens. Merrill's collection card and label ship with the specimen.