Pyroxene

III. Atoms, Elements and Minerals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A. Changing Scale : Zooming in from global view to atomic scale The crust is made of rocks > Rocks are made of minerals > … Quartz Biotite Feldspar

A. Changing Scale : Zooming in from global view to atomic scale Rocks are made of minerals > Minerals are made of atoms

Atoms and Elements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Electron Shells

Ions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Ions ,[object Object],[object Object],[object Object],[object Object],(Cation) Oxygen Sodium

Most Common Elements of Earth’s Crust Oxygen: O -2 Silicon: Si +4 Aluminum: Al +3 Iron: Fe +2 or +3 Calcium: Ca +2 Sodium: Na +1 Potassium: K +1 Magnesium: Mg +2

B. Introduction to Minerals ,[object Object],[object Object],[object Object],[object Object],[object Object]

Intro to Minerals ,[object Object],[object Object],[object Object],Crystal Form  3 planes of cleavage

[object Object],[object Object],[object Object],Some Familiar Crystal Forms Fig. 2.15a

Silica Tetrahedra ,[object Object],[object Object],[object Object],[object Object],[object Object]

Silica Tetrahedra ,[object Object],[object Object],[object Object],[object Object],[object Object],-4

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Definition of Mineral

C. Silica Tetrahedra and Silicate Minerals ,[object Object],[object Object],[object Object],* *

Silicate Minerals: Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Definite Range

Silicate Minerals: Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],*

Silicate Minerals: Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Silicate Minerals: Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Building Silicates ,[object Object],[object Object],[object Object],[object Object]

Building Silicates ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Building Silicates ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Single Chain Silicates ,[object Object]

Silicate Minerals: Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],*

Double Chain Silicates ,[object Object]

Silicate Minerals: Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],*

Sheet Silicates ,[object Object]

Silicate Minerals ,[object Object],[object Object],[object Object],[object Object],[object Object],Granite Orthoclase Quartz *

Framework Silicates ,[object Object]

Pyroxene

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