This Specimen has been sold.
2.1" Blue Cyanotrichite Crystal Formation - China
This is a beautiful, vibrant blue formation of cyanotrichite that was collected from the Qinglong Mine in the Guizhou Province of China.
Cyanotrichite is a hydrous copper aluminum sulfate with the chemical formula Cu4Al2SO4(OH)12 · 2H2O. It is a secondary mineral in copper oxidation zones and is primarily found as spherical aggregates of blue, radiating acicular crystals. Due to the fragility of Cyanotrichite crystals, it's suggested that specimens are placed in a safe location and handled carefully.