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Geology Lab
Rocks
50
Geology
Undergraduate 4
10/03/2013

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Term
[image]
Definition
Halite
Has 90 degree angles
Transparent
Hardness 2½
Tastes very salty and is more greasy
Term
[image]
Definition
Calcite
Luster :Vitreous, Pearly
Diaphaneity (Transparency): Transparent, Translucent
Calcite is tastelaess
Reacts strongly to HCI
Hardness 3
Term
[image]
Definition
Gypsum
Has one plane of cleavage
Luster: Vitreous, Sub-Vitreous, Silky, Pearly, Dull
Color: Colourless to white, often tinged other hues due to impurities; colourless in transmitted light..
Streaks White
Hardness 2
Term
[image]
Definition
Quartz Sandstone
Sedimentary
Clastic Rock
Sand Sized Particles
Color White to light tan
Miscellaneous Feels sandy; Mature
Term
[image]
Definition
Pumice
Igneous Rock
Extrusive
Vesicular
Term
[image]
Definition
Granite
Igneous rock
Felsic
Phanertic
ONLY PHANERTIC FELSIC ROCK WE HAVE
Granite is specled
Term
[image]
Definition
rhyolite porphyry
Igneous
felsic
Term
[image]
Definition
Orthoclase
Hardness 6
Two cleave planes at 90 degrees
Comment: Pearly on cleavage
Colour: Colorless, Greenish, Grayish yellow, White, Pink
Term
[image]
Definition
Quartzite
Metamorphic
Non foliated
Sandstone is protolithe of Quartz
Term
[image]
Definition
Slate
Metamorphic
Foliated
Protolithe is Shale
Very fine grained
Term
[image]
Definition
Rock Gypsum
Sedimentary Rocks
Chemical
Very soft, use penny to scratch
Term
[image]
Definition
Cocina
Granola like appearance
organic
sedimentary
reacts to HI
Term
[image]
Definition
Smoky Quartz
No Scratch
Term
[image]
Definition
Crystaline Dolostone
Has a very very slow reaction to HCI
Term
[image]
Definition
Chalcedony
Hardness 7
Mineral
Diaphaneity (Transparency): Translucent
Comment: vitreous when polished
Colour: colorless, white, gray, blue, any color due to embedded minerals, multicolored specimen not uncommon.
Streak: White
Term
[image]
Definition
Chert
sedimentary rock
chemical
Term
[image]
Definition
Limestone
HCL test it
Term
[image]
Definition
Follsilferous Limestone
Organic
Sedimentary
Term
[image]
Definition
Conglomerate rock
Sand pebbles
Not calcite, does not react?
look for whole pebbles sticking out
Term
[image]
Definition
Metaconglomorate
Protolithe of conglomorate
Look for broken pebbles
Term
[image]
Definition
Fluorite
ONLY GREEN ROCK
jollyrancher
Term
[image]
Definition
Plagioclase
minearal
2 planes of cleavage
thin narrow grooves
hardness & 6
Term
[image]
Definition
Pyrite
No cleavage
crystale phases
6 hardness
goldier appearance
Term
[image]
Definition
Olivine
Kind of green
has no cleavage
Term
[image]
Definition
Schist
Metamorphic
foliated
Protolithe is Shale
Term
[image]
Definition
Dense Dolostone
slow bubbles
reacts slowly to HCI
sedimentary
Chemical rocks
Term
[image]
Definition
Basalt
Very very hard
not magnetic, no crystals
maephic igneous
aphanetic
extrusive
Term
[image]
Definition
Magnatite
super duper magnetic
Term
[image]
Definition
Gabbro
See crystals, all the same size
phanertic
mafic
intrusive
Term
[image]
Definition
Hornblende
two planes @ 90 degress
dark green to black amphibole
Term
[image]
Definition
Antracite coal
much lighter
protolithe bitumous coal
metamorphic nonfoliated
Term
[image]
Definition
Obsidian
Denser
Igneious
extrusive glassy
heavier
Term
[image]
Definition
Soapstone
feels soapy
always dark green
metamorphized talc
foliated
Term
[image]
Definition
Shale
Hear how brittle it is
sedimentary clastic
Term
[image]
Definition
Biotite
Black shiny
one sheet of cleavage
layers mineral
Term
[image]
Definition
Muscovite
Mineral
it's gold
Term
[image]
Definition
Vesicular Basalt
Igneious
vesicular
holy
Term
[image]
Definition
Scoria
Reddish in color
lava rock
Term
[image]
Definition
Bitumous Coal
Sedimentary
Rub off on hands
Term
[image]
Definition
Garnet
mineral
reddish
Crystals
Term
[image]
Definition
Galena
Shiny
Metalic Luster
Mined for lead
Term
[image]
Definition
Arkose
Sedimentary
different sizes and shhapes
Term
[image]
Definition
Rhyolite
Igneous?
Term
[image]
Definition
Graphite
mineral
can draw with it
soft pencil lead
Term
[image]
Definition
Diorite
Igenous
Morphic
salt and peper
cookies and cream
Term
[image]
Definition
granite porphy
has crystals
different cooling rates
Term
[image]
Definition
Chalcopyrite
copper looking pyrite
Term
[image]
Definition
Greywacke
Feels sandy
dirty rock
Term
[image]
Definition
Gneiss
banded
metamorphic
Term
[image]
Definition
Geothite
Streaks brownish
mineral
rusty
has iron
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