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Minerals and The Rock Cycle

VIEWS: 5 PAGES: 18

  • pg 1
									By: Nolan and Jenna
By: Nolan
   Minerals are solid
    compounds (two or
    more elements
    combined).
   Minerals are
    inorganic, which
    means they’re not
    alive.
   Minerals are naturally   http://www.jewelinfo4u.com/Differentiating
                             _Diamond_and_its_Imitation.aspx

    occurring and have a
    fixed structure.
     Mineral crystals come in different systems.
   Hexagonal-example: graphite
   Tetragonal-example: chalcopyrite
   Cubic-example: halite (rock salt)
   Orthorhombic-example: topaz
   Monoclinic-example: talc
   Triclinic-example: kaolinite
    These systems each have a fixed pattern in the
               form of a geometric shape.
         These are ways to identify minerals.
   Luster-The luster of a mineral is the way light
    reflects off the surface. Minerals with a metallic
    luster are shiny. Minerals with a nonmetallic
    luster look dull.
   Streak-Streak is the color of the powder left
    when it is rubbed against a hard, rough
    surface.
   Cleavage-Cleavage is
    the tendency of a
    mineral to break
    along flat surfaces.
   Hardness-Hardness is
    the measure of how
    well a mineral resists
    scratching.              http://skywalker.cochise.edu/wellerr/mineral/mica
                             /peel.htm
Minerals and crystals form in
        different ways.
 Crystals form when
  magma cools and the
  molecules fall into a
  certain pattern or when
  water rich in dissolved
  minerals evaporates and
  leaves the minerals
  behind.
 Diamonds are formed
  when the weight of other
  rocks pushing down and        http://skywalker.cochise.edu/wellerr/mineral/quartz
                                /quartz1.htm
  heat from below makes a
  “pressure cooker”.
   Silicates are minerals
    that contain silicon,
    oxygen (the two most
    common elements),
    and usually one or
    more other elements.
                             http://www.hardwaresphere.com/20
                             09/03/02/silicon-power-unveils-
                             64gb-flash-drive/
   Asbestos is a
    threadlike mineral.
   Asbestos has high
    heat-resistance
    capabilities and is
    used in insulation and
    fire-proof clothing.
   Asbestos has been        http://www.readaboutmesothelioma.com/asbes
    known to cause lung      tos.html


    cancer if inhaled and
    is being removed
    from many buildings.
    Minerals are used in
        many things.
   Some minerals called
    gems are used in
    jewelry. Some
    examples are rubies
    and sapphires.
   Gems are also used to
    mark special            http://www.ultimatearticleauthority.com/

    occasions, such as
                            a-guide-to-buying-loose-gemstones/


    weddings.
By: Jenna Breitenfeldt
   Rock Cycle: A rock cycle is a process that takes
    many years. It changes back and forth among
    magma, igneous rocks, sedimentary rocks, and
    metamorphic rocks that is a never ending series.



   Rock: A rock is a naturally formed solid in the
    crust made up of one or more minerals.
   Rocks are changed by
    processes of
    weathering, erosion,
    compaction,
    cementation, melting,
    and cooling.



                            http://keep3.sjfc.edu/students/acn00433/e-
                            port/MSTI260/Virtual%20Learning/Volcanoes/
                            Volcanoes.html
   Other common rock-
    forming minerals
    include feldspar,
    hornblende, and mica.




                            http://gemologyonline.com/Forum/phpBB2/viewtopic.
                            php?f=6&t=12001
   Sedimentary rocks can be changed by heat and
    pressure to form Metamorphic rock.
   It also can be changed into Igneous rock by
    heat, pressure, heating, and cooling.
   Metamorphic rocks can melt and cool to form
    Igneous rock.
    To change Metamorphic rock to Sedimentary
    rock, it must go through weathering, erosion,
    compaction, and cementation.
   Igneous rocks then weather and erode and the
    fragments from it might form another
    sedimentary rock.
   Heat and pressure can also change igneous
    rocks into metamorphic rocks.
http://www.oasisdesign.net/design/gallery/balance.htm

								
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