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Minerals
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One Type of Asbestos

5. Silicates are the most important mineral group

Slide 54

Tectosilicates - Three-Dimensional Networks

Tectosilicates - Three-Dimensional Networks

Quartz Feldspars

5. Silicates are the most important mineral group

Slide 55

Making Sense of Crystals

Making Sense of Crystals

6. Crystals are determined by mathematical rules called symmetry

Slide 56

Unit Cells

Unit Cells

All repeating patterns can be described in terms of repeating boxes

Slide 57

The problem in Crystallography is to reason from the outward shape to the unit cell

The problem in Crystallography is to reason from the outward shape to the unit cell

6. Crystals are determined by mathematical rules called symmetry

Slide 58

Which Shape Makes Each Stack?

Which Shape Makes Each Stack?

Crystals are determined by mathematical rules called symmetry

Slide 59

Stacking Cubes

Stacking Cubes

6. Crystals are determined by mathematical rules called symmetry

Slide 60

6. Crystals are determined by mathematical rules called symmetry

6. Crystals are determined by mathematical rules called symmetry

Slide 61

6. Crystals are determined by mathematical rules called symmetry

6. Crystals are determined by mathematical rules called symmetry

Slide 62

6. Crystals are determined by mathematical rules called symmetry

6. Crystals are determined by mathematical rules called symmetry

Slide 63

Some shapes that result from stacking cubes

Some shapes that result from stacking cubes

6. Crystals are determined by mathematical rules called symmetry

Slide 64

Symmetry  the rules behind the shapes

Symmetry the rules behind the shapes

6. Crystals are determined by mathematical rules called symmetry

Slide 65

Symmetry  the rules behind the shapes

Symmetry the rules behind the shapes

6. Crystals are determined by mathematical rules called symmetry

Slide 66

The Crystal Classes

The Crystal Classes

6. Crystals are determined by mathematical rules called symmetry

Slide 67

Take-Away Points

Take-Away Points

Chemical elements form in stars

Atoms bond by sharing electrons

Minerals are classified by their chemistry

Minerals can be identified by their physical properties = atomic structure

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