出典:Wiktionary
出典:『Wiktionary』 (2026/02/02 16:51 UTC 版)
From Leadhills, Scotland, where it was discovered, and -ite.
出典:Wikipedia
出典:『Wikipedia』 (2011/06/14 12:39 UTC 版)
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.