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  1. #1

    Aug 2011
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    2,566


    . Monomineralic Rock :
    1- Mineral Content .
    2- Mode of origin .
    3- Mode of occurrence .
    ( ) Primary rocks Magma Lava .

    Physico chemical conditions . .


    :
    :

    (1) :
    :

    Acidic 66٪ Granite Granodiorite .
    - Intermediate 66 52 ٪ Syenite Diorite .
    Basic 52 40 ٪ Gabbro Basalt .
    Ultrabasic 40٪ Dunite Peridotite .
    .


    (2) Mode of ocurrence and texture:
    .

    Plutonic rocks :
    Volatiles , Goarse grained .

    () Extrusive ( Volcanic ) rocks :
    ( ) Lava Fine grained Glassy .
    Intrusive rocks :
    Hypabyssal rocks
    Medium grained . , ( ) Dykes Sills ... 0 , .
    Porphyritic texture , Phenocrysts .
    ..

  2. #2

    Aug 2011
    -
    2,566

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    : -

    1 Granite :
    20 40 ٪ 2 / 3 . .
    Rhyolite Obsedian Petchstone ( ) Pumice .
    0 ( ) .

    2 Granodiorite:
    Dacite .

    3 Pegmatite:
    0 0 Beryl Tourmaline Zircon .

    4 Syenite:
    ( ) 0 , Trachyte .

    5 Diorite:
    Andesite .
    6 Gabbro :
    , . Basalt .

    7 Peridotite :
    . Accessory minerals : 2٪ : .


    Forms of Igneous Rocks :

    :

    ( ) Massive plutons: :
    1 Batholith:
    0

    ..

  3. #3

    Aug 2011
    -
    2,566

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    2 : Stock
    100 . Bosses

    ( ) Sheet Intrusions : Intrusions :

    1 Dyke:
    , .


    2 Sill:
    , .


    ( ) Lens shaped plutons : :

    1 Lacolith:
    Sills .


    2 Loplith:
    .
    ..

  4. #4

    Jul 2011
    -
    15,678

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  5. #5

    Oct 2015
    18


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