METAMORPHIC ROCK Flashcards
- rocks that undergo a change to form a new rock
- began as a rock—either a sedimentary, igneous, or
even a different sort of metamorphic rock
Metamorphic Rock
conditions required to form a metamorphic rock are
very specific
Metamorphic Rock
is the process of transformation of parent
rock
Metamorphism
three rock types
igneous, sedimentary and
metamorphic
The Conditions:
The existing rock must be exposed to to be a metamorphic rock:
- high heat
- high pressure
- mineral-rich fluid
It is vital that the existing rock remain______________________-
solid and
not melt.
3 Metamorphic Rock Samples:
Gneiss
Marble
Slate
it is when granite is subjected to
intense heat and pressure, it
changes into a metamorphic
rock
Gneiss
it is when Limestone, a sedimentary rock, will change into the metamorphic rock if the condition is right.
Marble
another common
metamorphic rock that forms
from shale
Slate
it is a Metamorphic rock, estimated to be as old as 3.8 billion years, located near Isua at Qorqut Sound, Greenland.
Metamorphic Rock Isua
it is any naturally occurring
inorganic material that
has a (more or less)
definite chemical
composition and
characteristic physical properties.
mineral
yes or no
Are minerals and rocks the same?
NO
are solid substances which
my have a combination of more than
one mineral.
Rocks
are inorganic substances that
occur naturally.
MIneral
do not have a definite
chemical composition.
Rocks
have a definite chemical
composition.
Minerals
are mainly classified as
igneous, sedimentary, and
metamorphic rocks.
Rocks
are mainly classified into
four groups namely: silicates,
carbonates, sulfides, and metallic
minerals.
Minerals
7 PHYSICAL PROPERTIES
OF MINERALS
Crystal Structure
Hardness
Color and Streak
Crystal Habit
Cleavage
Transparency and Lustre
Specific Gravity
it describes the orderly geometric spatial arrangement of atoms in the internal structure of a mineral
CRYSTAL
STRUCTURE
6 types of crystal family
isometric
hexagonal
orthombric
tetragonal
monoclinic
triclinic
refers to the overall shape of a
crystal
CRYSTAL HABIT
the 5 different crystal habits
acicular
dendritic
reniform
prismatic
tabular
refers to the mineral resistance
to scratch
HARDNESS
rough measure of the
resistance of a smooth
surface to scratching
or abrasion, expressed
in terms of a scale
Mohs’ Scale
devised (1812) by the
German mineralogist
Friedrich Mohs
Mohs’ Scale
Mohs’ Scale was devised (1812) by the
German mineralogist named
Friedrich Mohs
streak refers to the color of the
mineral in powdered form
COLOR AND STREAK
indicates how light is
reflected off a surface of a mineral
Lustre
❖ Refers to the mineral’s resistance
to being broken
❖ Describes how a mineral breaks
along weakness plain
CLEAVAGE
3 types of cleavage by direction
cleavage in one direction. two directions, and three directions
example of cleavage in one direction
Muscovite
examples of cleavage in two directions
Feldspar
calcite
example of cleavage in three directions
halite
❖ Describes the mineral’s density in comparison to the density
of a standard like water
❖ Determined through balance
SPECIFIC GRAVITY
the specific gravity of a mineral is the ration of its weight compared with the weight of an equal —————
volume of water
SPECIFIC
GRAVITY of Copper
8.9
SPECIFIC GRAVITY of Silver
10.5
SPECIFIC GRAVITY of Lead
11.3
SPECIFIC GRAVITY of Gold
19
they estimated that the Philippines has around USD 840 billion worth of untrapped mineral wealth from metallic and non-metallic minerals.
The Mines and Geosciences Bureau
The 5 Metallic Elements Found in the Philippines
Gold, Copper, Nickel, Chromite, and Iron
The 5 Nonmetallic Elements Found iin the Philippines
Limestone, Marble, Gravel, and Sand
and other Quarry Materials
