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ROCKS AND MINERALS (TYPES of ROCKS (for example (Pumice, Obsidian, basalt)…
ROCKS AND MINERALS
TYPES of ROCKS
Two types
plutonic rocks
volcanic rocks
composition
one mineral
several minerals
for example
Pumice
Obsidian
basalt
Origin
lava or magma
pressure or heat
sediments or fragments
PHYSICAL PROPERTIES OF MINERALS
CRISTALINE STRUCTURE
QUARTZ
Irregular
Cristaline structure
PYRITE
Mineral
natural
solid
inorganic
COLOUR AND STREAK
Differents colours
LAYERS OF THE GEOSPHERE
CRUST
Surface
2
tipes
CONTINENTAL
OCEANIC
the thinnest
MANTLE
+interior