What are Minerals? | What are Mineral Properties? - Geology.com
There are approximately 4000 different minerals, and each of those minerals has a unique set of physical properties. These include: color, streak, hardness, luster, diaphaneity, specific gravity, cleavage, fracture, magnetism, solubility, and many more.

What Are Rock-Forming Minerals? - Geology.com
What Are Rock-Forming Minerals? Scientists have identified over 4,000 different minerals. A small group of these minerals make up almost 90% of the rocks of Earth’s crust. These minerals are known as the common rock-forming minerals.

Fluorescent Minerals and Rocks: They Glow under UV Light!
A small number of minerals and rocks will glow with spectacular colors under ultraviolet light. Learn how this happens.

Copper Mineral | Uses and Properties - Geology.com
The best way to learn about minerals is to study with a collection of small specimens that you can handle, examine, and observe their properties. Inexpensive mineral collections are available in the Geology.com Store.

Mohs Hardness Scale: Testing the Resistance to Being Scratched
A list of minerals in order of hardness can be a handy reference. If you determine that a specimen has a hardness of Mohs 4, you can quickly get a list of potential minerals.

REE - Rare Earth Elements - Metals, Minerals, Mining, Uses
Home » Metals » REE - Rare Earth Elements REE - Rare Earth Elements and their Uses The demand for rare earth elements has grown rapidly, but their occurrence in minable deposits is limited. Article by: Hobart M. King, PhD

The Geology of Rare Earth Elements
The process of erosion concentrates denser minerals, most notably gold, into deposits known as placers. Depending on the source of the erosion products, certain rare earth elements-bearing minerals, such as monazite and xenotime, can be concentrated along with other heavy minerals.

Geology and Earth Science News, Articles, Photos, Maps and More
Minerals - Descriptions, photos, articles, properties and uses for common minerals.

Calcite Mineral | Uses and Properties - Geology.com
The best way to learn about minerals is to study with a collection of small specimens that you can handle, examine, and observe their properties. Inexpensive mineral collections are available in the Geology.com Store.

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