1.7" Vibrant Blue, Cyanotrichite with Cubic Fluorite - China

These are beautiful, vibrant blue cyanotrichite aggregates that formed in association with cubic fluorite crystals, collected from the Qinglong Mine in the Guizhou Province of China. It has been mounted to an acrylic display base with glue.

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.

Fluorite is a halide mineral comprised of calcium and fluorine, CaF2. The word fluorite is from the Latin fluo-, which means "to flow". In 1852 fluorite gave its name to the phenomenon known as fluorescence, or the property of fluorite to glow a different color depending upon the bandwidth of the ultraviolet light it is exposed to. Fluorite occurs commonly in cubic, octahedral and dodecahedral crystals in many different colors. These colors range from colorless and completely transparent to yellow, green, blue, purple, pink or black. Purples and greens tend to be the most common colors seen.
Cyanotrichite & Fluorite
Qinglong Mine, Dachang Sb ore field, Qianxi'nan A.P., Guizhou Province, China
1.7 x 1.35"