3. 3
• A mineral has one specific chemical
composition, whereas a rock can be
an aggregate of different minerals
or mineralogy.
• The study of minerals is
called mineralogy.
8. 8
• The sulfate minerals are a
class of minerals that
include the sulfate
ion (SO4
2−) within their
structure.
• The sulfate minerals
occur commonly in
primary evaporitedepositi
onal environments,
as gangue minerals
in hydrothermal veins and
as secondary minerals in
the oxidizing zone
of sulfide
mineral deposits.
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