Fluorite – A Mineral of Many Forms and Colors

Fluorite is a unique mineral that can be found in more colors than any other mineral including blue, red, purple, yellow, green or white.  It is the example mineral with a hardness of 4 on the Mohs hardness scale.  Fluorite has a white streak and a glassy luster.  It is often formed in hydrothermal (hot water) veins within other rocks.  Fluorite is often found with other minerals such as galena, calcite, quartz, sphalerite and borite.  Crystals of fluorite can form in cube (squares) or octahedron (diamond) shapes.  Fluorite is made of calcium fluoride and is used in the production of enamels, hydrofluoric acid, cooking utensils, telescopes and camera lenses. 


Fluorite Trivia: 

ó      Fluorite crystals often grow together which is called twinning.

ó      Fluorite crystals will fluoresce under ultraviolet light.

ó      Jewelers sometimes facet fluorite crystals and use them as imitation diamond.

ó      In addition to forming cubes and octahedrons, fluorite can occur in bands. 

One of the most famous forms of banded fluorite is called Blue John and found in Derbyshire, United Kingdom.

Check out our website www.MiniMeGeology.com for great fluorite samples and more information on minerals, rocks and geology.

2 Responses to “Fluorite – A Mineral of Many Forms and Colors”

  1. Keep up the good work.

  2. Thank you for your blog post! My son used this information in a report for school. May I ask the name of the author for his bibliography?

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