2.3" Black Tourmaline, Fluorite & Goshenite Association - Namibia

This is an association of goshenite crystals, purple fluorite, limonite coated quartz crystals and black tourmaline (schorl), collected from the Erongo Mountains in Namibia.

Goshenite is a white to colorless variety of Beryl.

Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Schorl, or black tourmaline, is the most common form of tourmaline, and has been used for everything from jewelry to piezoelectric guitar pickups.

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.


DETAILS
SPECIES
Tourmaline var. Schorl, Fluorite, Quartz & Goshenite
LOCATION
Erongo Mountains, Namibia
SIZE
2.3" wide
CATEGORY
ITEM
#90691