1. Rocks & Minerals
ROCKS & MINERALS

2. Science Starter
Have your ISN opened up to next blank page. You will need to a glue stick and scissors

3. Rocks and Minerals Intro

4. Minerals must be: Naturally occurring made from non-living things
Quartz forms naturally from magma
Coal forms naturally from the remains of plants

5. Minerals must be: Solid Have a fixed shape and volume
Never living- inorganic

6. Minerals must have: Have a definite crystal structure
particles line up in a regular, repeating pattern.
flat sides called faces, that meet at sharp edges and corners.

7. Minerals must have: A definite chemical composition
Always contains certain elements in the same proportion.
Almost all minerals are compounds, (two or more different elements chemically joined).

8. Minerals Review All minerals must: Occur naturally in nature
Inorganic solid
Crystal structure
Definite chemical composition

9. Science Starter
Have your homework out and ready to check. Have your ISN, glue stick, and scissors out (Not Mrs. Slatery’s).

10. Properties of Minerals
Hardness
A measure of how easily a mineral can be scratched.
MOH hardness scale
- Rank of hardness of minerals

11. Properties of Minerals
Density
Minerals will have a certain density regardless of the size of the sample.
Feel their weight in your hands

12. 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

13. Properties of Minerals
Streak
The color of its powder.
Not always the same as the color of the mineral.

14. Properties of Minerals
Color
first thing noticed about minerals

15. Rock classification Geologist study rock sample by… What is texture?
Mineral Composition
Color
Texture
What is texture?
ocal.wasp.uwa.edu.au/.../rock/rock16.jpeg

16. Rock Classification Grain Size Shape Pattern

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

18. Rock classification
Rocks come in a variety of colors

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

20. Rocks classification Texture Grain Minerals Color Origin of rocks

21. Origin of rocks
Igneous rocks are formed from the cooling of magma or lava
Lava is magma that reaches the earth’s surface

22. 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

23. Origin of rocks Metamorphic rocks are formed from other rocks
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

24. Rock cycle