Unit 4. Minerals and Rocks

The contents of this unit are:

The geosphere
- Layers of the geosphere

What is a mineral?


Propierties of the minerals:


- Optical propierties

  - Color
  - Streak
  - Luster
  - Transparency
- Mechanical propierties
  - Hardness (Mohs Scale)
  - Brittleness
- Physical propierties
  - Magnetism
  - Electrical conductivity
  - Density
- Chemical propierties
  - Reactivity with acids
  - Solubility

What is a rock?


Characteristics of the rocks:


 - Color

 - Texture
  -size
  -shape
  -pattern

Igneous rocks


 - Formation

 - Types: plutonic and volcanic rocks

Sedimentary rocks


 - Formation

 - Types: Clastics, Bioclastics, Organic, Evaporites

Metamorphic rocks


 - Formation

 - Types: Foliated and Non-foliated rocks

Rock Cycle