Mineral Mini Project, Mrs. Smith November 3rd


Fluorite is a mineral made from calcium fluoride (CaF2). A mineral is a naturally occurring solid substance that is inorganic. It also has a definite chemical composition and a crystalline structure. Fluorite derives from the Latin noun "fluo," meaning a stream or flow of water. It is the most important natural fluoride. Because of its richness in colors, it has always been fascinating to man.

When it's Tested...

Fluorite is mainly tested in eight different ways. When I tested it, i got these answers:

Exterior color- Describes the specific color(s) of the mineral. The most common colors are purple, blue, green, yellow, or colorless. Less common are pink, red, white, brown, black and mainly every color in between.

Luster- Luster is the way the mineral reflects in light. The luster for this mineral is vitreous.

Streak- the streak is the mark the mineral makes when rubbed against something. From what I tested, there is no streak color.

Cleavage- Cleavage is the way the rock cracks and separates. If the rock cracks with rough edges, it has fracture but if it splits cleanly and smooth, it has cleavage. Cleavage is measured by quality and amount of sides that have cleavage. Fluorite has cleavage and an irregular fracture.

Structure- The structure for a mineral is the type of shape it has. Fluorites structure is orthorhombic.

How Form- Also known as formation, is the process in which the mineral goes through to form. Fluorite forms from evaporating salt water.

Diaphaniety- Diaphaniety is the measure of how much light passes through the mineral. The diaphaniety of fluorite is translucent to opaque.

Special Property

There are 7 different types of special properties. These properties include Fluorescence, Chemical Reaction, Optical Properties, Magnetism, Taste, and Radioactivity, and specific gravity.

Fluorescence- the visible or invisible radiation emitted by certain substances as a result of incident radiation of a shorter wavelength such as X-rays or ultraviolet light. It is can be tested by shinning an ultraviolet light on the mineral. If it glows, it has fluorescence. Fluorite does have this special property.

Chemical Reaction- a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction. You can test the chemical reaction by placing a drop of weak acid on the mineral and watching to see if it "fizzes." If it fizzes, then it must have a chemical reaction. Fluorite does not have a chemical reaction.

Optical Properties- a minerals intrinsic ability to interact with light. To test this property, place the object over text and see if it creates a double image when you look through it. If this happens, then the mineral has an optical property. Fluorite doesn't have an optical property.

Magnetism- a physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects. If you want to test weather your mineral has magnetism, place a magnet or screw (something made from metal) on the mineral and see if they attach. Fluorite does not have any magnetism in it.

Taste- the sensation of flavor perceived in the mouth and throat on contact with a mineral. You can test the taste of a mineral by physically tasting it. Usually for minerals, if there is any taste, it would be more of a salty taste. For example, halite has a salty taste. Fluorite doesn't have much of a taste.

Radioactivity- when minerals contain radium or uranium that can be detected by a Geiger counter. A Geiger counter is a device for measuring radioactivity by detecting and counting ionizing particles. There is no radioactivity in fluorite.

Specific Gravity- the ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas. The special gravity for fluorite is 3.0-3.3.


Where do you find fluorite?

Fluorite is found in many places in the world such as places like Germany, Canada, China, Mexico, Norway, a and many other countries.

How is fluorite mined?

Fluorite is mined from sedimentary rocks such as dolomite and limestone.

What is fluorite used for?

Fluorite is made used for many reasons such as a source of fluorine for hydrofluoric acid and fluorinated water. It is also used as a gemstone, ornamental carvings and some special optical uses.

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