What is the composition of slate?
Muscovite, quartz, clay minerals
Clay minerals, quartz, mica
Muscovite, quartz, garnet
Quartz
What is the composition of schist?
Quartz, feldspar, mafic minerals
What is the composition of gneiss?
Calcite
What is the composition of marble?
100% quartz
100% calcite
What is the composition of metaquartzite?
Clay minerals
What is the composition of spotted rock?
Garnet, muscovite, quartz
Complete the table of parent rocks.
Which of the following are properties of slate?
Forms schistosity
Fine grained
Sugary texture
Minerals are aligned by pressure forming slaty cleavage.
Complete the following statements about schist: It contains large garnet . The alignment of is 90 degrees to the pressure.
Complete these statements about gneiss: Gneissose banding Schistosity( Gneissose banding, Schistosity ) forms. Dark bands are made of silicic minerals mafic minerals( silicic minerals, mafic minerals ) eg. muscovite quartz biotite( muscovite, quartz, biotite ). Light bands are made of quartz calcite( quartz, calcite ) and plagioclase feldspar potassium feldspar( plagioclase feldspar, potassium feldspar ).
The spots in spotted rock are made of black organic material or biotite.
The texture of marble is described as sugary coarse glassy( sugary, coarse, glassy ). If their were impurities in the parent rock then spots of biotite coloured streaks garnet porphyroblasts( spots of biotite, coloured streaks, garnet porphyroblasts ) will be visible in the marble.
Label the igneous rock graph.
At which plate margins does regional metamorphism occur?
Conservative
Oceanic-Oceanic divergent
Continental-continental convergent
Oceanic-continental convergent
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