1 / 7

What are minerals?

What are minerals?. What are minerals?. Minerals are naturally occurring inorganic solids formed from an element or compound. There are more than 2,000 minerals in the Earth’s crust. Only a few of these are found in most rocks!. Only seven elements make up over 96% of the Earth’s crust.

brendan-simpson
Télécharger la présentation

What are 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. What are minerals?

  2. What are minerals? • Minerals are naturally occurring inorganic solids formed from an element or compound. • There are more than 2,000 minerals in the Earth’s crust. Only a few of these are found in most rocks!

  3. Only seven elements make up over 96% of the Earth’s crust. * O = 47% * Si = 27% * K = 2% * Al = 8% * Na = 3% * Fe = 5% * Ca = 4%

  4. The identifiable characteristics of Minerals are: • Physical properties such as color, streak, luster, hardness, magnetism, etc. • Color is an important characteristic but many minerals are the same color. • Streak is the powder color left by a mineral when rubbed on a tile.

  5. The identifiable characteristics of Minerals are: • Luster may be metallic or nonmetallic. Reflection of light by a mineral’s surface. • Hardness is how much a mineral resists being scratched. The Mohs scale is used to measure hardness. • What is the hardest mineral?

  6. What are crystals? • All minerals are made of crystals. • The atoms are arranged in a regular, repeated pattern. • The crystals of a mineral will always have the same shape but the size may vary.

  7. Atomsmake upelements. Elementscombine to form naturalcompounds. Naturalcompoundsandelementscombineto formminerals. Mineralsmake uprocks. Rocksmake up theEarth.

More Related