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MINERALS

MINERALS. MINERALS. -a substance if it is naturally-occurring, inorganic, crystalline solid with a definite composition. A substance is not called mineral unless it meets the following requirements:. Minerals are inorganic They are formed in nature They are solids

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MINERALS

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  1. MINERALS

  2. MINERALS -a substance if it is naturally-occurring, inorganic, crystalline solid with a definite composition.

  3. A substance is not called mineral unless it meets the following requirements: Minerals are inorganic They are formed in nature They are solids Atoms of a mineral have the same crystalline pattern The chemical compositions is the same with only very minor change

  4. Only around 12 minerals are common in the earth’s crust and that what we called ROCK-FORMERS.

  5. ROCK FORMING MINERALS

  6. Identifying Minerals • 1. Luster-refers to the way light is reflected from a mineral surface.

  7. 2. Hardness – this property refers to the mineral’s resistance to being scratched.

  8. 3. Streak – refers to the color of the powdered mineral.

  9. 4. Cleavage – is the tendency of a mineral to break along planes of weak bonding. 5. Fracture – minerals that do not exhibit cleavage when broken.

  10. 6. Color – is important in the identification of only a few minerals.

  11. 7. Specific Gravity – is a number which represents the ratio of the weight of the mineral to the weight of an equal volume of water.

  12. 8. Crystal Form – when the external features of a mineral reflect its orderly internal arrangement of atoms.

  13. Minerals in the Philippines Non-metallic Minerals: Dolomitic limestone Feldspar Silica Clay

  14. Limestone – used to make lime, in concrete and cement. -found in Cebu, Negros, and Angat, Bulacan. Feldspar – used in making tiles and ceramic toiletware. -found in Ilocos Norte and Pampanga. Silica – used for making glass. -found in Palawan, Sagay, Negros Occidental.

  15. Red Clay – used for pottery. -found in Cebu, Ilocos Sur and IlocosNorte.White Clay (Kaolinite) – used for pottery, ceramics, and chinaware. -found in Iloilo and Camarines Sur.Marble – used for building construction. -found in Romblon.

  16. Metallic Minerals Iron Nickel Copper Gold Silver Chromium Zinc and Lead

  17. Gold – is the only precious metal which can be found pure in nature.Silver – is not mined separately but as a by-product of mining gold or galena.Mercury – reserves are located in Albay and Palawan.

  18. THE END!!..

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