Home » Minerals
What Are Minerals?
Minerals are materials that meet five requirements. They are: 1) naturally occurring, 2) inorganic, 3) solids, 4) with a definite chemical composition, and, 5) an ordered internal structure.
Vanadinite is an important ore of vanadium and a minor source of lead.
Quartz is the most abundant mineral in the crust. It has many useful properties.
Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.
Topaz is a mineral best known as a durable gemstone and its use in Mohs Hardness Scale.
Calcite is a carbonate mineral with industrial, agricultural, medical and many other uses.
Diopside - Gem material, ornamental stone, diamond indicator, industrial mineral.
Fluorescent Minerals glow with spectacular colors under ultraviolet light.
Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Diamond: The Mineral
Diamond is a mineral with unique properties and many gem and industrial uses!
Rock and Mineral Kits
Rock and Mineral Kits The most effective way to learn about rocks and minerals.
Geodes look like ordinary rocks on the outside but can be spectacular inside!
Geology Dictionary - contains thousands of geological terms with their definitions.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
The Streak Test is a method to determine the color of a mineral in powdered form.
Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.
Benitoite - discovery of the State Gem of California - USGS report from 1911.
What Are Minerals?
Minerals are the building blocks of our society. We use items made with them every day.
Rhodochrosite : a manganese mineral used as an ore, a pink gem and an ornamental stone.
Diamonds from Coal?
Diamonds Do Not Form From Coal That is one of the biggest misconceptions in science.
Variscite is a yellowish green to bluish green mineral. It is similar to turquoise and cut as a gem.
Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Serpentine - metamorphic rocks used in construction, architecture and lapidary work.
Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
Mineral Identification Chart Printable mineral ID chart by Art Crossman in MS Excel format.
Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.
Rock-Forming Minerals - most of Earth*s crust is made-up of a small number of minerals.
Hematite - the most important source of iron ore and mineral pigment since prehistory.
Rhodonite - a manganese silicate used as a minor ore of manganese and as a gemstone.
Don*t Go To Jail
Mineral collectors must know the rules for removing specimens from public and private property.
Kyanite is a metamorphic mineral used to make porcelain, abrasive products and gems.
Chalcopyrite - The most important ore of copper for over five thousand years.
Cinnabar - the only important ore of mercury. Used in pigments until its toxicity was realized.
Uses of Gold
Gold has unique properties that make it one of the most useful minerals.
Is Water a Mineral?
Are Water and Ice Minerals? Comparing their properties with the definition of a mineral.
Ilmenite - The primary ore of titanium and source of most titanium dioxide.
Tourmaline - the most colorful mineral and natural gem material on Earth.
United States Gemstones Small mines in the U.S. produce a diversity of gemstones.
Spodumene is a pegmatite mineral, an ore of lithium and sometimes a gemstone.
Tucson Mineral Show
Tucson Gem & Mineral Show Photos from the largest gem and mineral show.
Tumbled Stones are rocks that have been rounded, smoothed and polished in a rock tumbler.
Rare Earth Elements
Rare Earth Elements are used in cell phones, DVDs, batteries, magnets & many other products.
Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Denver Mineral Show
Denver Gem and Mineral Show - Photos and comments about this incredible show.
Mineral Rights - Who owns the minerals under your land? Who wants to buy them?
Abandoned Mine Accidents kill several people every year. Education can prevent deaths.
Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks.
Uses of Silver
Uses of Silver Most people think of jewelry and coins, but silver\'s primary use is industrial.
How Do Snowflakes Form? They start as tiny crystals. Some grow on the way down.
Olivine Rain Spitzer Telescope discovered a rain of olivine crystals on protostar HOPS-68.
Minerals in Colored Glass - Minerals are what produce the color in colored glass.
Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.
The Acid Test
The Acid Test Geologists use dilute hydrochloric acid to identify carbonate minerals.
Crystal Habit is the external shape displayed by a crystal or an aggregate of crystals.
Fireworks & Minerals
The Science of Fireworks Learn how the colors and shapes are created.
Gold Panning Kits
Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for gold!
Uses of Talc
Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.
Limonite - an amorphous iron oxide. An ore of iron and a pigment since prehistory.
Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
Triboluminescence is flash produced when a mineral is rubbed, scratched or broken.