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ROCKS AND MINERALS (PHYSICAL PROPERTIES OF MINERALS (MINERAL (Natural,…
ROCKS AND MINERALS
PHYSICAL PROPERTIES OF MINERALS
CRISTALLINE STRUCTURE
Quartz
Cristaline structure
Lustres
It is hard
Irregular
Pyrite
COLOUR AND STREAK
differents colours
Sulphur, yellow
Malachite,green
MINERAL
Natural
Inorganic
Solid
TYPES OF ROCKS
TWO TYPES
Volcanic Rocks
Plutonic Rocks
FOR EXAMPLE
Pumice
Obsidian
Basalt
CHARACTERISTICS OF ROCKS
Origin
lava or magma
pressure or heat
sediments or fragments
Texture
It texture depends
Composition
several minerals
one mineral
Layers of the geosphere
MANTLE
Occupies most of the Earth
Most common rock: Peridotite
Solid,Soft
CORE
The hottest part
TWO PARTS
Outer core
Inner core
Made of iron and nickel
CRUST
Thinnest layer
There are two types
Continental crust
oceanic crust
Other properties
Temacity
Is the resistance of a mineral for braking or bending
Facture and cleavage
TIPES
Silky
adamantine
Pearly
Glassy
Matte
Metallic
Hardness
FOR EXAMPLE
Diamond
Talc
Is the resistance of a mineral to being scratched by another