1. Rocks Study Slides

2. Igneous Rocks Look glassy Have air pockets Have interlocking crystals Name the igneous rocks on the following slides

4. Obsidian Looks glassy

6. Granite Has interlocking crystals

8. Scoria Has air pockets

10. Gabbro Has interlocking crystals

12. Pumice Air pockets

14. Rhyolite Has small interlocking crystals

16. Diorite Has interlocking crystals hint to remember: “Salt & Pepper” rock - it is light and dark (medium)

17. Sedimentary Rocks Are made of sediments Have fossils Are salty

19. Limestone Has fossils

21. Conglomerate Is made of sediments

23. Sandstone Is made of sediments

25. Coal Has fossils/is made of plant and animal remains

27. Siltstone Is made of sediments

28. Metamorphic Rocks Are foliated – Banding – Mineral alignment Are unfoliated – Have a “frosty/glazed” look

30. Gneiss Has banding hint to remember: Looks like a zebra and zebras are “nice” (gneiss)

32. Slate Has foliation

34. Marble Non-foliated (“frosty” look)

36. Schist Has foliation hint to remember: it is so pretty you want to touch it - the picture in your reference table looks like a thumbprint

38. Quartzite Nonfoliated (“frosty” look)

39. Quiz Yourself What things can you use to identify a sedimentary rock? What things can you use to identify an igneous rock? What things can you use to identify a metamorphic rock?