Transcript B17 minerals in rocks ppt

6B17 Minerals In Rocks
B17 Mineral/Rock Background
• Minerals come from the Earth and their
crystal sizes are very small.
• Many rocks are made from minerals.
• Rocks can often be identified by the minerals
they contain. Each rock may contain one or
many different minerals.
• CHALLENGE QUESTION: Can you identify one
of the minerals found in a rock? How?
B17 Mineral/Rock Data Table
Name_______________ Hr__ Date___
OBSERVATIONS
Color(s), Texture(s), etc.
Mineral Crystal(s)
description (one or more
than one mineral inside)
More observations
GRANITE
LIMESTONE
B17 Mineral/Rock Procedure A
1. Record all observations on the Data Table.
2. Examine both rocks with a magnifying lens.
Write if each rock is made of one mineral or
more than one mineral.
3. Each rock contains either calcite or quartz.
Which property should be tested to identify
the mineral inside? You may want to review
the data from the last activity.
4. Write 1 paragraph about tests you would use.
Calcite/Quartz Mineral Properties
PROPERTY
CALCITE
QUARTZ
COLOR
Colorless, white, pink, blue, Colorless, white, pink, blue,
red, or green
purple, or yellow
TRANSPARENCY
Translucent
Transparent
LUSTER (SHINE/REFLECT)
Dull
Glassy
HARDNESS (MOHS SCALE)
3
7
STREAK COLOR
White
White
LIGHT REFRACTION
Sometimes shows 2 images Always shows 1 image
B17 Mineral/Rock Procedure B
4. These properties are useful to test a large
mineral sample, but not useful if the minerals
are small and found deep inside another rock.
We need a test to use while it is still in the rock.
5. We can see if the minerals react with acid.
Quartz does not react with acid, but Calcite will
bubble and fizz with hydrochloric acid. This
should help us tell them apart. Watch the demo
and record observations in your data table.
B17 Mineral/Rock Analysis: Date_____
Name____________________Hour__
1.
2.
3.
4.
Which mineral is in granite? Use evidence.
Which mineral is in limestone? Use evidence.
How do rocks look different than minerals?
Copy these lists of words. Cross out the word
that does not belong; circle the main word
that includes the others and explain why.
1. Fluorite, quartz, mineral, granite, diamond
2. Rock, property, streak color, transparent, luster
3. Limestone, granite, calcite, rocks