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  1. Mineral Properties, Photos, Uses and Descriptions

    Photos and information about 80 common rock-forming, ore and gemstone minerals from around the world.

  2. 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, …

  3. 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 …

  4. 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.

  5. The "Acid Test" for Carbonate Minerals and Carbonate Rocks

    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 …

  6. 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 …

  7. Gold Mineral 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 …

  8. Staurolite: A metamorphic mineral famous for twinned crystals

    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 …

  9. Luster: The light-reflecting qualities of a mineral.

    This appearance often occurs on cleavage surfaces of transparent to translucent minerals that include some micas, some feldspars, and some carbonate minerals. Examples include muscovite, …

  10. Rocks: Pictures of Igneous, Metamorphic and Sedimentary Rocks

    Fluorescent Minerals Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.