Leadhillite

Pale green leadhillite crystals. From the Mammoth-St. Anthony Mine, Tiger, Pinal County, Arizona. Field of view is 1.2 mm. (Photo courtesy Brent Thorne; unauthorized reproduction is prohibited.)

Formula: Pb4(SO4)(CO3)2(OH)2 Monoclinic

Description:

Leadhillite is a rare mineral found in the oxidized zone of lead deposits, usually associated with anglesite and cerussite.

IOWA COUNTY: Irving (1883) reports leadhillite as occurring in the mines in the Mineral Point region.