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Earth Rocks Science & Minerals GRANITE. The contents of rocks What are rocks made of? One or more Minerals.

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Presentation on theme: "Earth Rocks Science & Minerals GRANITE. The contents of rocks What are rocks made of? One or more Minerals."— Presentation transcript:

1 Earth Rocks Science & Minerals GRANITE

2 The contents of rocks What are rocks made of? One or more Minerals

3 What are mineral? Minerals are natural, non-living solid crystals that make up rocks.

4 Granite Granite is one of the most common rocks in the world.

5 What 3 minerals? What is the rock, granite, made of? Quartz Feldspar Mica

6 What 3 minerals? What is the rock, granite, made of? Quartz Quartz is one of the most common minerals in Earth’s crust.

7 What 3 minerals? What is the rock, granite, made of? Feldspar Potassium feldspars contains potassium. Feldspar crystals are stubby prisms, often pink to white.

8 What 3 minerals? What is the rock, granite, made of? Mica All micas form flat, book-like crystals that peal apart into individual sheets on cleavage planes. Crystals cleave into smooth flakes. Mica is so soft that you can scratch it with a fingernail.cleavage

9 A property of minerals What is cleavage? Mica The tendency of a mineral to break along weak planes.

10 Granite What thinking map can we use to illustrate granite and the minerals it’s made of? Mica pink granite Lizard on gray granite


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