Leadhillite

Leadhillite is a lead sulfate carbonate hydroxide mineral, often associated with anglesite. It has the formula Pb₄SO₄(CO₃)₂(OH)₂. Leadhillite crystallizes in the monoclinic system, but forms pseudo-hexagonal forms due to crystal twinning. It forms transparent to translucent variably colored adamantine crystals. It is quite soft with a Mohs hardness of 2.5 and a relatively high specific gravity of 6.26 to 6.55.

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It was discovered in 1832 in the Susannah Mine, Leadhills in the county of Lanark, Scotland.

See also

• Lanarkite

References

• Webmineral
• Mindat w/ locations
• Mineral galleries