2. Difference Between rocks AnD
MinerAls
• A mineral is a natural • A rock is an aggregate
occurring inorganic of one or more such as
crystalline solid with a granite mineral
specific chemical particles formed
composition and a through either
characteristic internal crystallization of
regular geometric molten magma
arrangement of atoms, (igneous rocks),
sometimes expressed settling of particles
as natural crystal (sedimentary rocks), or
faces. reheating and pressure
applied to pre-existing
rocks (metamorphic
rocks), with no set
chemical composition
or atomic structure
3. 3 tYPes of rocks
• Sedimentary rock • Metamorphic rock
• Igneous rock
4. How Are tHeY forMeD
• Sedimentary rock is one • Metamorphic rock is an
that is formed by the that has either been
accumulation of small to squeezed by incredible
large sediment particles pressures deep
derived from all three underground and/or has
types of rock and in some been exposed to very
cases organic material,
high temperatures,
and undergoes
altering its structure,
• A igneous rock is mineral alignment, or
simply a rock that has chemical composition.
solidified from magma Metamorphic rocks are
or lava upon cooling. classified as contact
Igneous rocks can be
intrusive
5. How Do You iDentifY MinerAls
• Color
• Streak
• Hardness
• Cleavage
• Luster
• Fracture
• Chemical composition
6. wHAt Are tHe tHree Most coMMon
eleMents in MinerAls
• Aluminum
• Silicon
• oxygen
8. sPecific exAMPle of An igneous rock
BecoMing A seDiMentArY rock
• It breaks down through
weathering and erosion to
become a sedimentary rock
• Quartz which is an igneous rock
can become Sandstone which is
a sedimentary rock.
9. sPecific exAMPle of igneous rock
BecoMing MetAMorPHic rock
• Igneous rocks, such as granite,
when subject to extreme
pressure and temperature will
change to a metamorphic rock
• Granite which is an igneous
rock will become Gneiss if
exposed to enough heat and
pressure.
10. sPecific exAMPle of seDiMentArY rock
BecoMing A MetAMorPHic rock
• Sedimentary rock becomes
metamorphic rock through the
addition of heat and/or pressure.
Contact metamorphic rocks are
those primarily transformed by close
proximity to an intrusion of magma,
where a recrystallization or
elemental transfer can take place.
• A good example is limestone
becoming marble.
12. works citeD
Kuntz, Deddie. “Rock and Minerals Web
Quest Tasks. “Camelot Elementary School.
22 Oct. 2009
<http://www.lewiston.k12.id.us/dkuntz/
WebQuest/html/task.htm>.
Peck, Don “The Rock Identification Key.”
2001. Rock And Gem Magazine Online. 22
Oct.2009.
<http://www.Rockhound.com>.
