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CHAPTER 2 MINERALS AND ROCKS. S6E5. Students will investigate the scientific view of how the earth’s surface is formed. S6E5b. Investigate the contribution.

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Presentation on theme: "CHAPTER 2 MINERALS AND ROCKS. S6E5. Students will investigate the scientific view of how the earth’s surface is formed. S6E5b. Investigate the contribution."— Presentation transcript:

1 CHAPTER 2 MINERALS AND ROCKS

2 S6E5. Students will investigate the scientific view of how the earth’s surface is formed. S6E5b. Investigate the contribution of minerals to rock composition.

3 What is a mineral? 1.Naturally occurring 2.Inorganic 3.Solid 4.Crystal Structure 5.Definite Chemical Composition

4 Identifying Minerals 1.Color5. Hardness 2.Streak6. Cleavage and Fracture 3.Luster7. Crystal Systems 4.Density 8.Special properties

5 Standards: S6E5. Students will investigate the scientific view of how the earth’s surface is formed. ELEMENTS: S6E5c – Classify rocks by their process of formation. S6E5d. Describe processes that change rocks and the surface of the earth.

6 Identifying Rocks 1.Composition 2.Color 3.Texture

7 Texture 1.Grain Size (Fine, Coarse, No Visible Grain) 2. Grain Shape (Rounded or Jagged) 3. Grain Pattern (Banded or Nonbanded)

8 Grain Size Picture of Slate (Fine grain)

9 Grain Size Picture of Diorite (coarse grain)

10 Grain Size Picture of Flint (no visible grain)

11 Grain Shape (Rounded Grain)

12 Grain Shape (Jagged grain)

13 Grain Pattern (Nonbanded)

14 Grain Pattern (Banded)

15 Types of Rock Igneous Sedimentary Metamorphic

16 Igneous Rocks Rocks formed from magma or lava

17 Igneous Rocks Classified as intrusive or extrusive (intrusive made from magma) (extrusive made from lava)

18 Igneous Rocks Intrusive rocks are made from magma inside the ground Example: Porphyry

19 Igneous Rocks Extrusive rocks are made from lava above the ground Example: Obsidian

20 Sedimentary Rocks (formed through erosion, deposition, compaction, or cementation) Classified as Clastic, Organic, or Chemical

21 Sedimentary Rocks Clastic rocks form when rock fragments are squeezed together Example : Shale

22 Sedimentary Rocks Organic rocks form where the remains of plants and animals are deposited in thick layers Left: Coal Right: Limestone

23 Sedimentary Rocks Chemical rocks form when minerals that are dissolved in a solution crystallize Example: Rock Salt

24 Metamorphic Rocks Formed from heat and pressure deep beneath Earth’s surface Classified as foliated or nonfoliated

25 Metamorphic Rocks foliated rocks have their grains arranged in parallel layers or bands Example: Schist

26 Metamorphic Rocks nonfoliated rocks have mineral grains that are arranged randomly Example: Marble

27 Example of Rocks. Igneous Basalt, Granite, Obsidian Sedimentary Sandstone, Limestone, Coal Metamorphic Marble, Shale


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