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MINERALS (Silicate minerals (Mafic (form under of high temperature and…
MINERALS
Silicate minerals
most common mineral
95% of rocks in earths crust
contains silicate SiO4
Mafic
common rock is basalt
dark in colour
higher density
form under of high temperature and pressure
deeper underground
higher density
contain 50% silicates
Felsic minerals
formed closer to surface of earth
Quartz, muscovite, feldspars
lower density
lighter in colour
richer in silicates
(> 63%)
common rock is granite
set of characteristics properties
definite chemical composition
Non silicate minerals
metal ores
haemotite
iron ore
banxite
aliminum
malachite
copper
Calcite
from calcium and oxygen
example is limestone
