1. Rocks & Minerals ROCKS & MINERALS

2. Minerals must be: Naturally occurring made from non- living things

3. Properties of Minerals Hardness A measure of how easily a mineral can be scratched. http://www.info-diamond.co.uk

4. Properties of Minerals Density Minerals will have a certain density regardless of the size of the sample. Each mineral has its own density called specific gravity http://www.astronomynotes.com/cosmolgy/

5. Properties of Minerals Luster The way a mineral reflects light. Can be metallic or non-metallic. Shiny or dull. waxy, pearly, glassy. This is a gem stone called tourmaline it has a glassy luster

6. Properties of Minerals Streak The color of its powder. Not always the same as the color of the mineral. http://geology.csupomona.edu/alert/mineral/streak.htm

7. Properties of Minerals Color first thing noticed about minerals http://www.nmnh.si.edu/rtp/students/2004/virtualposters/poster

8. Rock classification Texture is how a rock looks and feels texture in rocks is determined by the size, shape, and pattern of a rocks grains. ocal.wasp.uwa.edu.au/.../rock/rock16.jpeg

9. Rock classification Mineral composition –Rocks are made of more than one mineral blue.utb.edu/.../PHYS1417SPR00/Unit3Lec.html

10. Rock Classification Origin of rocks How were the rocks formed - magma - erosion and layering - heat and pressure

11. Origin of rocks Igneous rocks are formed from the cooling of magma or lava –Lava is magma that reaches the earth ’ s surface www.outreach.canterbury.ac.nz/.../igneous.jpg

12. Origin of rocks Sedimentary rocks are formed from other rocks that are broken into small particles and moved by erosion (wind or water) The particles are squeezed or cemented together Rocks are layered www.energyinst.org.uk/education/glossary/

13. Origin of rocks Metamorphic rocks are formed from heat and pressure. Rocks have been pushed deep into the earth ’ s crust Pressure from the earth above and heat from the mantle below cause them to change shape, color, grain and crystal structure http://www.classzone.com/books/earth_science/terc/content/visualizations/es0607/es06 07page01.cfm?chapter_no=visualization

14. Rock cycle http://www.classzone.com/books/earth_science/terc/content/investigati ons/es0602/es0602page02.cfm