8.5" Cubic Fluorite Crystals on Quartz & Barite - Fluorescent!

This is a 8.5" wide cluster of green and purple cubic fluorite crystals that was collected from the Qinglong Mine in the Guizhou Province of China. The fluorite has darker purple coloration along the edges and formed over a bed of small quartz and barite crystals. Under short wave UV, the fluorite exhibits a purple fluorescence.

Comes with a display stand for preferred presentation.

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.

Silicon Dioxide, also known as SiO2 or Quartz, is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich, hot watery solutions called hydrothermal environments, at temperatures between 100°C and 450°C, and usually under very high pressure. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountains forming, and can be hundreds of millions of years old.

Barite, commonly spelled baryte, is well-known for its great range of colors and varied crystal forms and habits. It is a heavy mineral consisting of barium sulfate, and typically has the chemical formula of BaSO4. The barite group consists of baryte, celestine, anglesite and anhydrite. It's generally white to colorless and is the main source of barium.

Fluorite, Barite & Quartz
Qinglong Mine, Guizhou Province, China
8.5 x 8.2 x 4.3"