WARM UP
In your own words, describe what you think
a mineral is.
Grade Sheets


As discussed we will keep track of
our grade with this grade sheet
Write down your score for
 Signing
your syllabus
 Possible
 Density
lab
 Possible
 Density
points: 5
points: 21
and Atoms HW
 Possible
points: 4
Is a Snowflake a Mineral?

Working with one partner of your choice, complete
the “Is a snowflake a mineral?” worksheet
Notes: Mineral Criteria

A mineral must:
Occur naturally
Be solid
Have a definite chemical composition
Have atoms arranged in an orderly pattern
Be inorganic (have never been alive)
1.
2.
3.
4.
5.

While there are about 4000 minerals, there are
only 30 common minerals

Gold and diamond are rare and therefore expensive
Notes: Mineral Properties
 Color—its
 Not



observed color
useful alone:
Many different minerals are same color
Impurities in a mineral can change its color
Mineral color can change in different circumstances
 Hardness—its
 Mohs


resistance to being scratched
scale of hardness
1=softest, EX: baby powder
10=hardest, EX: diamond
Notes: Mineral Properties
 Luster—how
 Metallic,
it shines in light
glassy, pearly, earthy
 Cleavage—its
tendency to break along
smooth planes (definite shape)
 Opposite
of fracture—its tendency to break
irregularly (no definite shape)
 Streak—color
 Not
of its powder
necessarily same as observed color!
Mineral ID Lab Demonstration
On your lab sheet, jot down notes on how you will
determine the following:
 Color


Using observation
Hardness

Using the “Mineral ID Reference Table,” scratch the mineral
progressively until a scratch appears on the mineral:
1.
2.
3.
4.
5.
Fingernail
Penny
Steel nail
Glass
White streak plate
Mineral ID Lab Demonstration

Luster
 Using
the “Mineral ID Reference Table,” match your
observation of the mineral with the descriptions of
metallic, glassy, pearly, or earthy

Cleavage
 Using
the “Mineral ID Reference Table,” match the
minerals cleavage lines with the depictions of basal,
prismatic, and cubic

Streak
 Drag
your mineral across the surface of the
white streak plate and note the color of the
streak
Closing

Is a lab-created diamond a mineral?
Warm Up

Identify whether or not the following minerals have
cleavage or fracture:
2.
1.
3.
Mineral ID Lab

Working with your group, complete the mineral
properties section of your lab sheet!
Closing

Why can we not identify a mineral based on color
alone? Give at least two reasons.
Warm Up
Are the following minerals? Why or why not?
1.
Coal
2.
Steel
Notes

Alloy—manmade mixture of metals
 EX:
steel
Turn in HW!
Mineral ID Lab



Working with your group, complete the mineral
identification section of your lab sheet
When you are done, ask Ms. McGowan for an ID
sheet and ID the minerals from your lab
Turn in your lab for a grade!
Notes: Mineral Formation

Cooling of Magma
 When
molten rock (magma) rises from
deep beneath Earth’s surface and cools
 If
the magma cools quickly, the mineral grains
are small
 If the magma cools slowly, the mineral grains
are large
Notes: Mineral Formation

Recrystallization
 When
a rock is subjected to high temperature and
pressure, it breaks down. These smaller particles
recombine to form new minerals
Notes: Mineral Formation

Evaporation
 When
water containing dissolved ions evaporates, the
ions will bond to form a mineral
 Example: Halite (Salt)
Closing

Can more than one process of mineral formation
occur at once?
Warm Up

Use the five mineral criteria to explain whether the
two examples below are considered minerals.
vs.
Iron
Video: Iron Fortified Cereal

What is your favorite cereal?

http://www.youtube.com/watch?v=ZGmWLoyE6eM
Group Work: Minerals in Everyday Life

After moving to our lab room, you will work with
your assigned partner to complete the “Minerals in
Everyday Life Activity”
 Follow
directions!
 This will be turned in at the end of class for a grade!
Closing

Respond to the closing question at the bottom of
your “Minerals in Everyday Life Activity”
 Raise
your hand when you are done and I will collect
your assignment
Warm Up

What mineral are you most thankful for? Why?
Quiz Review

Work with the person next to you to complete your
quiz review
Quiz


Put everything away except a pen or pencil
When you finish your quiz, raise your hand and I
will collect your quiz
 Do
not turn your quiz in! It may disrupt others who are
still testing!
Closing

How was your quiz?
 Do
you think you did well?
 What did you struggle with?
 Did you study?
 What can you do next time to ensure you understand
the quizzed material?
Warm Up

What mineral makes up drywall?

What else is this mineral used for?
Update Gradesheet






If you are unhappy with your grade, please come
talk to me for the possibility of a reassessment
Density and Atom Quiz (points possible=19)
Birthstone HW (points possible=4)
Mineral ID lab (points possible=18)
Minerals in Everyday Life (points possible=30)
Minerals Quiz (points possible=20)
The “Ice Palace” of Chihuahua


While we are watching the video, write 3 things
that shock you about the “Ice Palace” of Chihuahua.
http://www.youtube.com/watch?v=ZVu_69hSILo
Closing

If you were to travel to the “Ice Palace” what
protective wear/equipment would you bring and
why? Name at least 5 pieces of equipment.