1 / 6

Rocks and Minerals

Rocks and Minerals. Minerals. A naturally occuring, inorganic, solid with a definate composition and an orderly arrangement of atoms. Crystals.

shira
Download Presentation

Rocks and Minerals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Rocks and Minerals

  2. Minerals • A naturally occuring, inorganic, solid with a definate composition and an orderly arrangement of atoms.

  3. Crystals • A mineral will form crystals when the atoms arrange in a pattern. The larger the crystal the longer it took to develop. Minerals formed when magma cools slowly will form large crystals. When lava cool rapidly it will form very small crystals. They may be to small to see with the naked eye. Crystals can also form from dissolved liquids.

  4. Mineral identification • 1. Hardness • 2. Luster • 3. Color • 4. Streak • 5. Cleavage and fracture

  5. 1 2 3 4 5 6 7 8 9 10 Scratched by finger nail Scratched by steel knife Will scratch glass - gemstones Talc Gypsum Calcite Fluorite Apatite Moonstone Quartz Topaz Corundum Diamond Hardness • The measure of how easily a mineral can be scratched.

  6. Luster • Describes how light reflects from a minerals surface. Luster is defined as either metallic or nonmetallic.

More Related