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Rocks and Minerals Stephanie McDonald and Janice Nardella.

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Presentation on theme: "Rocks and Minerals Stephanie McDonald and Janice Nardella."— Presentation transcript:

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2 Rocks and Minerals Stephanie McDonald and Janice Nardella

3 Discover How Rocks are Formed! There are 3 types of rocks: Igneous Sedimentary Metamorphic

4 How Igneous Rock Is Formed Igneous Rock is formed by the crystallization and solidification of molten magma. Magma forms when rock is heated to high temperatures beneath the Earth's surface.

5 How Sedimentary Rock Is Formed Sedimentary Rocks are formed in layers as the result of moderate pressure on accumulated sediments.

6 How Metamorphic Rock is Formed Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change.

7 From what type of metamorphic rock did Michelangelo carve his most famous statues, such as “la Pieta” and “David”? Marble – Cabrera marble

8 What is the difference between rocks and minerals? Rocks are made up of one or more minerals. Minerals are homogeneous, naturally occurring, inorganic solids. Each mineral has a definite chemical composition and a characteristic crystalline structure. A mineral may be a single element such as copper (Cu) or gold (Au), or it may be a compound made up of a number of elements.

9 What is the single most common mineral in the earths crust? QUARTZ is undoubtedly the single most common mineral in the Earth's crust. Some estimates place quartz at 21% of the Earth's total lithosphere.

10 What is the name of the scale that measures the hardness of Minerals? Mohs Hardness scale A measurement that was devised by Austrian scientist Fredrick Mohs to determine the hardness of a mineral.

11 The hope diamond is what color(s) & what causes it to be that color(s)? The Hope diamond phosphoresces a strong red color, which will last for several seconds after exposure to short wave ultra-violet light. The diamond's blue coloration is attributed to trace amounts of boron in the stone. The Hope diamond phosphoresces a strong red color, which will last for several seconds after exposure to short wave ultra-violet light. The diamond's blue coloration is attributed to trace amounts of boron in the stone.

12 What does it mean if a mineral is isometric? Any mineral that falls under the following specifications belongs to the isometric crystal system: Three axes, all of them are equal in length and lie at 90° from the other.

13 The End


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