1. Welcome to Evans Mining Company

2. Directions You and your mining partner must only use your toothpicks! The pan in front of you is your mine! Mine out the beads and seeds!

3. By the way….. The colored beads cost you money, the bronze & gold are worth the most!

4. What it will cost you You will get one piece of candy for every: 25 gold Beads 45bronze Beads

5. Now…..you must get it back the same way!

6. Table of Contents Date: 8/17 Section: Minerals Title: Minerals classification Page 2

7. Mining It is the process of removing rock and mineral material from the Earth for society to use to make products!

8. Open pit mining (surface mining) This is digging a hole on the surface of the earth to remove the material we want.

9. Subsurface Mining – when the material is deep in the ground!

10. Mine reclamation – returning the land to a useable state! Before and after images

11. II. The world of minerals

12. What determines if something is a mineral? Naturally occurring solid Crystal structure inorganic definite chemical make-up

13. What do you think? Which of these are minerals? Sand petroleum gold coal glass rubies diamonds water Here is a hard one – What about ice?

14. III. How do geologists identify minerals? 1. One way is color! http://www.minresco.com http://www.prettyrock.com http://www.gems-afghan.com http://www.globalcrystals.com

15. 2. A mineral's hardness helps identify it. Not all minerals have the same hardness. Some you can easily scratch with your fingernail! /vwdocs/vwlessons http://www.wpclipart.com http://www.infowest.com http://www.wpclipart.com http://www.prettyrock.com

16. 3. Streak test Streak is the color of a mineral powder. Many minerals appear a different color when powdered than they do as a big piece. The color may be entirely different, or it may be a different shade. http://cmsc.minotstateu.edu http://cmsc.minotstateu.edu http://www.uky.edu/KGS

17. 4. Luster How do these look different? Copyright © Dr. Richard Busch Courtesy United States Geological Survey Courtesy United States Geological Survey Each reflects light differently – that is luster! Which of these words would you use to describe these minerals? Glassy, metallic, dull, silky, waxy, pearly

18. 5. Minerals also have different densities. This means for equal size, they have their own special weight. Which one is worth more? How could you tell? http://www.palagems.com A scientist would measure their densities and they would be different! The first one is topaz (worth a lot) and the second is citrine quartz (not worth a lot).

19. 6. Minerals also have different crystal patterns Copyright © Dr. Richard Busch http://webphysics.davidson.edu http://www.wired-artist-jewelry.com http://www.fabreminerals.com Link to crystal video media player quicktime http://www.fabreminerals.com

20. 7. Another property is the way a mineral breaks. Fracture means it breaks in a random pattern that cannot be predicted. Cleavage means it breaks the same way every time. www.visionlearning.com donsmaps.com Calcite and halite break a special way. Quartz and chert break in a random pattern. There is not way to predict how they break. www.mrsciguy.com

21. Rock Unit The three tiers