Term
Granite
Igneous Rock
Phaneritic
Intrusive
Sialic/Felsic
Low Temp
Tan
Pink
White |
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Definition
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Term
Arkose
Sedimentary
Detrital
K-Feldspar
Quartz
Pink or Gray
1/16 to 2mm sand particle
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Definition
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Term
Quartzite
Metamorphic Rock
Sandstone + heat + pressure
NonFoliated
Aphanitic - Fine Crystal - low temp
Phaneritic - Large Crystal - high temp
Not Grainy/Sandy Melted together
Hardness 7
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Definition
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Term
Rounded Conglomerate
Sedimentary
>2mm pebble
Detrital
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Definition
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Term
Angular Conglomerate
Sedimentary Rock
Detrital
>2mm |
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Definition
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Term
Breccia
>2mm Pebble
Sedimentary Rock
Detrital
Angular
caused by impact melting
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Definition
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Term
Schist
Metamorphic
Foliated
Intermediate Grade
Fish Scale look
Mica w/garnets
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Definition
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Term
Andesite
Igneous Rock
Extrusive
Intermediate Grade
Grey/Green/White
Aphanitic
compare to Diorite
Na plagioclase
Pyroxene
Amphibole |
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Definition
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Term
Diorite
Igneous Rock
Intrusive
Salt and Pepper
Na Plagioclase
Pyroxene
Amphibole
Hornblende |
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Definition
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Term
Basalt
Igneous Rock
Extrusive
Glassy
No Minerals
Aphanitic
Black
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Definition
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Term
Gabbro
Igneous Rock
Phaneritic
Includes
Hornblende |
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Definition
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Term
Slate
Metamorphic Rock
Foliated
Polymineralic
Low Grade
Clay/Shale/Mudstone to Slate |
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Definition
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Term
Shale
Sedimentary
Detrital
Clay to Shale
<256
can have fossils |
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Definition
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Term
Bituminous Coal
Nonfoliated
Metamorphic Rock
Soft Coal
Tar like
Easy to Break
organic matter = carbon + pressure = coal |
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Definition
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Term
Anthracite Coal
(Peacock Coal)
Nonfoliated
Metamorphic Rock
Harder than Bituminous
Lighter than Bituminous
organic matter = carbon + pressure = coal
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Definition
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Term
Obsidian
Igneous
Extrusive
Aphanitic
Glassy
Black |
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Definition
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Term
Flint
Sedimentary
Chemical
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Definition
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Term
Gneiss
Metamorphic
Foliated
High grade
contains
K-Feldspar
Na Plagioclase
Biotite
Amphibole
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Definition
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Term
Sandstone
Sedimentary
Detrital
Broken Grains
made of quartz |
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Definition
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Term
Rhyolite
Igneous Rock
Felsic/Low Temp
Extrusive
Aphanitic
no minerals
white - pink - tan |
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Definition
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Term
Marble
Sedimentary Rock
BioChemical
reacts to acid
Aphanitic and/or Phaneritic
Clacite |
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Definition
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Term
Quartzite
Metamorphic
Non-Foliated
Sandstone to Quartzite
Aphanitic low tp
Phaneritic high TP
Not Grainy |
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Definition
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Term
Phyllite
Metamorphic Rock
Lowgrade
Foliated
Satiny
Tiny Mica Flakes
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Definition
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Term
Micrite
Sedimentary Rock
Biochemical
micritic limestone
Aphanitic
Reacts to Acid
was Calcite |
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Definition
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Term
Limestone
Sedimentary
phaneritic
crystalline limestone
reacts to acid
was calcite |
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Definition
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Term
Peridotite
Igneous Rock
Mafic
High Temp
crystals
Olivine |
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Definition
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Term
Greenstone
Metamorphic Rock
Basalt to Greenstone
Split Pea Soup
Heavy Specific Gravity
High P low t
Iron and Mg |
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Definition
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Term
Greywacke
Sedimentary Rock
Detrital
1/16 to 2mm sand
gray |
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Definition
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Term
Coquina
Sedimentary
BioChemical
Reacts to Acid
Shells and Fossils Cemented Together |
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Definition
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Term
Fossiliferous Limestone
Sedimentary
Chemical
Reacts to acid
Contains Fossils
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Definition
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