4.6" Stepped, Green Fluorite and Quartz - Fluorescent

 
Here is a specimen containing stepped-cubic green fluorite crystals that formed in association with quartz crystals, collected from Henan Province, China. Some portions of the fluorite contain purple coloration. Under UV lighting, the crystals exhibit purple fluorescence.

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 know 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.

FOR SALE
$35
DETAILS
SPECIES
Fluorite & Quartz
LOCATION
Xinyang, Henan Province, China
SIZE
4.6 x 3.2"
CATEGORY
SUB CATEGORY
ITEM
#122026