Transcript Chapter 2 Section 1: Properties of Minerals

Chapter 2 Section 1 Review:
Properties of Minerals
What are the five characteristics of a
mineral?
• 1.__________________________________
• 2.__________________________________
• 3.__________________________________
• 4.__________________________________
• 5.__________________________________
What is the difference between
organic and inorganic?
• Organic means “of living things.”
• In means not.
• So, inorganic means not made from living
things.
Directions: Fill in the missing mineral properties (color, streak, luster, hardness,
density, crystal structure, cleavage, fracture, or special properties). You may use some
more than once.
3. A mineral that splits easily along flat surfaces
Cleavage
4. Number and angle of crystal faces
Crystal Structure
5. Mass per unit volume
Density
6. Glow when placed under ultraviolet light
Special Properties
7. Perform a scratch test
Hardness
8. How light is reflected from a mineral’s surface
Luster
9. Describes how a mineral looks when it breaks apart in
an irregular way
Fracture
10. magnetic
Special Properties
11. Terms used include metallic, glassy, earthy, silky,
waxy, and pearly
luster
12. Observe surface of mineral
13. Color of its powder
14. mass/volume
color
streak
density
• 15. On the Mohs hardness scale the softest
mineral is __________________.
• 16. On the Mohs hardness scale the hardest
mineral is _________________.
15. How does a geode form?
1. A crack or hollow forms in a rock.
2. Water containing dissolved minerals seeps into the
rock or hollow in the rock.
3. Crystallization slowly occurs, lining the inside with
large crystals.
4. The geode is now complete!
16. What are three ways minerals
form?
1. Organic processes
2. Crystallize from materials that are
dissolved in solutions
3. Minerals crystallize as magma and lava and
cool.
• 17. What is crystallization?
A process by which Atoms are arranged to
form a material that has a crystal structure.
• 18. how is the mineral halite formed?
Halite is formed over millions of years when
ancient seas slowly evaporated.
• 19. What is a vein?
A vein is a narrow channel or slab of a mineral
that is different from the surrounding rock.
20. Name THREE things that affect crystal size.
1. The rate at which the magma cools.
2. The amount of gas the magma contains.
3. The chemical composition of the magma.
21. When lava cools quickly the crystal size is _______________
22. When magma cools slowly the crystal size is
_________________
– 23. What is ore?
Ore is a deposit of valuable minerals contained in
a rock.
Mohs hardness scale