chapter 3 minerals n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Chapter 3 Minerals PowerPoint Presentation
Download Presentation
Chapter 3 Minerals

Loading in 2 Seconds...

play fullscreen
1 / 20

Chapter 3 Minerals - PowerPoint PPT Presentation


  • 66 Views
  • Uploaded on

Chapter 3 Minerals. Lesson 1 What is a mineral? Pages 76-84. Chapter Introduction. What are minerals and why are they useful?. http://www.redorbit.com/news/video/education_1/1112810933/what-is-a-mineral/. Chapter Introduction. SS#1 Sept. 24, 2013. What is a mineral?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Chapter 3 Minerals' - ling


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chapter 3 minerals

Chapter 3Minerals

Lesson 1

What is a mineral?

Pages 76-84

chapter introduction
Chapter Introduction

What are minerals and why are they useful?

http://www.redorbit.com/news/video/education_1/1112810933/what-is-a-mineral/

chapter introduction1
Chapter Introduction

SS#1 Sept. 24, 2013

slide4

What is a mineral?

crystalsolid chemical substance with a regular, repeating arrangement of its atoms

crystallizationwhen particles dissolved in a liquid solidify to form crystals

lava molten rock that erupts onto Earth’s surface

magmamolten rock material under Earth’s surface

Silicate a mineral group that has silicon and oxygen in its crystal structure

slide5

What is a mineral?

  • I can explain:
  • What is a mineral? (5 characteristics)
  • What the 6 crystal shapes are?
  • How minerals form? (3 ways plus an example)
  • What the common rock-forming minerals are? (2 groups plus an example)
lesson 1 notes what is a mineral
Lesson 1 Notes – What is a mineral?
  • Minerals arenaturally occurring, inorganic(non-living) solidsthat have adefinite chemical compositionand join together in an orderly crystal structure.

Minerals

naturally occurring

inorganic

orderly crystal structure

solids

definite chemical composition

slide7

The Structure of Minerals

  • Minerals occur in many different shapes.
  • When a crystal forms under the right conditions and has time to grow, it will develop a characteristic crystal shape.
  • Most of the time, minerals grow in tiny clusters.
crystal shapes
Crystal Shapes –

Hexagonal

Four axes, three are equal in length and lie at an angle of 120° from each other.

  • Triclinic
  • 3 axis, all unequal and none at 90° angles.
  • Orthorhombic
  • All axis unequal in length, and 90° degrees from each other.
crystal forms
Crystal Forms –
  • Monoclinic
  • All axis unequal in length. Two of them are at right angles to each other, while the third is lies at an angle other than 90°.
  • Tetragonal
  • Three axes, two are equal in length, one is unequal.)
  • Isometric/Cubic
  • All three axes are equal in length and at 90° degrees from each other.
slide10

How do minerals form?

  • Minerals can crystallize from either hot or cool solutions.
  • As water evaporates from a cool solution in a dry environment, solids crystallize out of the water and form minerals.

Example – halite

slide11

How do minerals form?(cont.)

  • Hot solutions are made when water flows through cracks in the earth’s crust into deep and hot environments.
  • Sometimes hot solutions carry large concentrations of dissolved solids that eventually become valuable mineral deposits.

Example - gold

slide12

How do minerals form?(cont.)

  • Minerals can also form from magma. Magmais molten material stored beneath Earth’s surface.
  • When magma erupts on or near Earth’s surface, it is called lava or ash.
slide13

How do minerals form?(cont.)

  • As lava above ground coolssmall crystals form quickly on or near Earth’s surface.
  • Also asmagma cools and crystallizes slowly below Earth’s surface, atoms and ions arrange themselves and form large mineral crystals.

Example – Quartz

slide14

The Structure of Minerals

  • The common rock-forming minerals are composed of combinations of elements that are abundant in Earth’s crust.
  • Oxygen and silicon are the two most abundant elements in the crust.
slide15

The Structure of Minerals(cont.)

The two main families of rock-forming minerals are the silicates and the nonsilicates.

  • A silicate is a member of the mineral group that has silicon and oxygen in its crystal structure.

Example:Quartz, Feldspar, Olivine and Mica

  • Nonsilicate minerals do not contain silicon.

Example: Calcite and Halite

slide16

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and crystalline form.

  • Crystal shape reflects the internal arrangement of atoms or ions.
  • The most common rock-forming minerals are silicates.
lesson 1 lr1
Lesson 1 – LR1

What type of chemical composition do minerals have?

A. definite

B. indefinite

C. unstable

D. stable

lesson 1 lr2
Lesson 1 – LR2

The common rock-forming minerals are composed of combinations of elements found in which part of the Earth?

A. mantle

B. core

C. crust

D. oceans

slide19

Which process occurs when particles dissolved in a liquid or gas solidify and form crystals?

A. evaporation

B. disintegration

C. crystal growth

D. crystallization

slide20
1. A mineral is anything solid on Earth.

2. Some minerals form when water evaporates from Earth’s surface.

Do you agree or disagree?