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Physical Geology Lab 5 - Metamorphic Rocks

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What are the foliated metamorphic rocks?
slate, schist, gneiss
What are the nonfoliated metamorphic rocks?
marble, quartzite
What is the texture of slate?
slaty
What is the texture of schist?
schistocity
What is the texture of gneiss?
gneissic banding
What are the parent rocks & metamorphic grade of slate?
-low grade
-shale, mudstone
What are the parent rocks & metamorphic grade of schist?
-intermediate to high grade
-siltstone, silty sandstone, shale, slate, basalt, & granite
What are the parent rocks & metamorphic grade of gneiss?
-high grade
-shale, schist, granite, and many others
What are the parent rocks & metamorphic grade of marble?
-low to medium grade
-limestone and dolostone
What are the parent rocks & metamorphic grade of quartzite?
-low to medium grade
-sandstone
What is the texture of marble?
nonfoliated
What is the texture of quartzite?
nonfoliated
What minerals are the light and dark bands in gneiss composed of?
light - quartz, feldspar
dark - biotite, ferromagnesians
Which metamorphic rock is composed of an interlocking of quartz grains and is finely crystalline?
quartzite
Which metamorphic rock is composed of an interlocking network of calcite grains and is coarsely crystalline?
marble
Which metamorphic rock is so fine grained that you cannot see individual minerals?
slate
Which metamorphic rock has a dull, earthy luster?
slate
What metamorphic rock has a silky to shiny luster due to the reflection of mica flakes?
schist
What is the composition of slate?
pelitic
What is the composition of schist?
pelitic
What is the composition of gneiss?
quartzofeldspathic
What is the composition of marble?
calcic
What is the composition of quartzite?
quartzofeldspathic
What is the order of metamorphism for shale?
shale -> slate -> schist -> gneiss

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