4" Botryoidal Plumbogummite Formation - Yangshuo Mine, China
This is a gorgeous formation of deep blue-green, botryoidal plumbogummite that was collected from the Yangshuo Mine, located in the Guangxi Zhuang Autonomous Region of China. Comes with an acrylic display stand.
Plumbogummite is a rare lead phosphate mineral with the chemical formula PbAl3(PO4)2(OH)5•(H2O). It forms in oxidation zones of lead deposits and primarily forms as a botryoidal mass after other minerals. The "plumbo" portion of this mineral's name is derived from the latin word for lead, "plumbum". "Gummi" comes from the gum like appearance that the mineral often displays.