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THE GEOSPHERE, THE MINERALS AND THE ROCKS (CHARACTERISTICS OF ROCKS…
THE GEOSPHERE, THE MINERALS AND THE ROCKS
MINERALS
PHYSICAL PROPERTIES
mineral`s particicles
We can call them crystals
CRYSTALINE STRUCTURE
Pyrite:cubic
Quartz:prismatic
COLOUR AND STREAK
suiplus:yellow
malachite:green
They have a characteristic colour
Quartz
LUSTRE
reflect light
Metallic
Glassy
Silky
Mattle
Pearly
Adamantine
OTHER PROPERTIES
TENOCITY
brittle
thought
resistance of breaking
FRACTURE AND CLEAVAGE
cleavage
regular fragments
Fracture
irregular fragments
HARDNESS
resistance and scratched
mohs scale
CHARACTERISTICS OF ROCKS
Origin
Sedimentary
Metamprphic
Igneous
Texture
Depends on
size
Distribution
form
Composition
Is made up of minerals
made up of minerals
ROCKS
Igneous Rocks
TWO TYPES
Plutonic rocks
Formed by magma
Have crystals
Volcanic Rocks
Formed by lava
Trap or bubbles inside
Sedimetary
Clays
Conglomerate
Soundstone
Methamorphic
It has a specific layered called
folliation
Have been transformed
THE LAYERS OF THE GEOSPHERE
MANTLE
The most common rock is periodotite
It is solid but soft
It ocupes more than the inferior of the Earth
CRUST
Earth´s suface
There are 2 tipes
Continental crust
Oceanic crust
Thinnest layer
CORE
Is the hottest part of the geosphere
There are two types
Outer core
Inner core
Is made up of:
Iron
Nikel
