Performing Well Under Pressure
Diamonds and Crystalline Structure

Tetrahedron Worksheet ANSWER KEY

Using the diagrams listed below:
http://comp.uark.edu/~sboss/study1b.jpg  Olivine
http://comp.uark.edu/~sboss/study1c.jpg  Single Chain
http://comp.uark.edu/~sboss/study1d.jpg  Double Chain.
http://comp.uark.edu/~sboss/study1e.jpg  Sheets

Complete the following:

A. On your desk, build a 3 D model of the mineral Olivine using at least 10 tetrahedron models.

Sketch what you have drawn here:

Mineral name _________________

Describe what you have drawn here:	

Determine the physical properties of Olivine and record them below:

The luster of this mineral is:         Metallic       Non Metallic     (circle one)

This mineral     Cleaves          Fractures     (circle one)

The streak of this mineral is       Clear or White             Colored      (circle one)

This mineral is       Harder           Softer     than a copper penny   (circle one)

B. On your desk, build a 3 D model of the mineral Augite using at least 10 tetrahedron models.

Sketch what you have drawn here:

Mineral name _________________

Describe what you have drawn here:	

Determine the physical properties of Augite and record them below:

The luster of this mineral is:         Metallic       Non Metallic     (circle one)

This mineral     Cleaves          Fractures     (circle one)

The streak of this mineral is       Clear or White             Colored      (circle one)

This mineral is       Harder           Softer     than a copper penny   (circle one)

C. On your desk, build a 3 D model of the mineral Hornblende using at least 10 tetrahedron models.

Sketch what you have drawn here:

Mineral name _________________

Describe what you have drawn here:	

Determine the physical properties of Hornblende and record them below:

The luster of this mineral is:         Metallic       Non Metallic     (circle one)

This mineral     Cleaves          Fractures     (circle one)

The streak of this mineral is       Clear or White             Colored      (circle one)

This mineral is       Harder           Softer     than a copper penny   (circle one)

D. On your desk, build a 3 D model of the mineral Muscovite using at least 10 tetrahedron models.

Sketch what you have drawn here:

Mineral name _________________

Describe what you have drawn here:	

Determine the physical properties of Muscovite and record them below:

The luster of this mineral is:         Metallic       Non Metallic     (circle one)

This mineral     Cleaves          Fractures     (circle one)

The streak of this mineral is       Clear or White             Colored      (circle one)

This mineral is       Harder           Softer     than a copper penny   (circle one)