This presentation discusses the definition and characteristics of a mineral. Also, this gives information about the physical properties that a mineral exhibits.

1. “Education is the
most powerful
weapon which you
can use to change
the world.”
- Nelson

8. Earth has naturally occurring materials of which
many are necessary for existence. Earth materials
include minerals and rocks. These materials give
information about the history of Earth and life.
Minerals
Minerals are naturally occurring inorganic solids.
They are natural because they are derived from natural
geologic processes. Minerals have crystalline structures
and definite composition. There are thousands of
minerals identified on Earth.

9. Characteristics of Minerals
1. naturally occurring- a product of Earth’s natural
processes
2. inorganic- it must be product of Earth’s physical
processes.
3. homogeneous solid - minerals should have
definite volume and rigid shape
4. definite chemical composition - represented by a
chemical formula
5. orderly crystalline structure - atoms of minerals
are arranged in an orderly and repeating pattern

10. Physical Properties of Minerals

11. Physical Properties of Minerals

12. Physical Properties of Minerals

13. Physical Properties of Minerals

14. Physical Properties of Minerals

15. Physical Properties of Minerals

16. Physical Properties of Minerals

17. Difference between Cleavage
and Fracture

18. Physical Properties of Minerals

19. Other Properties
– magnetism, odor, taste, tenacity, reaction to acid, etc.
For example, magnetite is strongly
magnetic; sulfur has distinctive smell; halite is salty;
calcite fizzes with acid as with dolomite but in
powdered form;

20. Other Properties
Tenacity - describes the minerals reaction to stress.
• Brittleness- a mineral turns into powder
• Malleability- a mineral can be flattened by pounding
with a hammer.
• Ductility- a mineral can be stretched into wire.
• Flexible but inelastic- Minerals are bent but they remain
in the new position.
• Flexible and elastic- Minerals are bent, and they bring
back to their original position.
• Sectility- ability of minerals to be sliced by a knife.

21. Categories of Minerals

22. Categories of Minerals

23. Categories of Minerals

24. Categories of Minerals

25. Categories of Minerals

26. Categories of Minerals

27. Categories of Minerals

28. Categories of Minerals

29. 1. L __ __ T __ R
- a manner by which
mineral reflects light

30. 2. S __ R __ __ K
- color of mineral in
powdered form

31. 3. __ L __ __V __ G __
- tendency of mineral
to break along flat
surfaces

32. 4. __ R __ C __U __ __
- the manner breaks
other than along
planes of
cleavage

33. 5. H __R __ __ __S__
- resistance of mineral to
scratching and it is the
most commonly used
property for identifying
minerals

34. 6. M __H __
H __ __ D __ __ S S
S __A __ __
- a ranking of mineral
from softest hardest

35. 7. __E __ __ C__ __ Y
- describes the mineral
reaction to stress

36. 8. __T __ __ C__
- true color of mineral

37. 9. S E __ __ I __ __ T Y
- ability of mineral to be
cut by knife

38. 10. C __ __ S __ A L
- repeating pattern in
minerals in solid

39. Upon knowing the value of
minerals in our everyday life, as a
student how can you help in
conserving and preserving the
natural sources of these minerals?
(For example, graphite is a mineral
found in pencil).
ASSIGNMENT