Classify the following metamorphic rocks into low-, medium-, or high-grade based on the minerals present in the rock
• Quartz, biotite, chlorite
• Quartz, feldspar, biotite, garnet, sillimanite
• Quartz, feldspar, biotite, garnet, staurolite
• Quartz, feldspar, muscovite, biotite, chlorite
• Quartz, feldspar, muscovite, biotite, garnet
• Quartz, feldspar, pyroxene
What will be an ideal response?
Quartz, biotite, chlorite low-grade
Quartz, feldspar, biotite, garnet, sillimanite high-grade
Quartz, feldspar, biotite, garnet, staurolite mid-grade
Quartz, feldspar, muscovite, biotite, chlorite low-grade
Quartz, feldspar, muscovite, biotite, garnet mid-grade
Quartz, feldspar, pyroxene high-grade
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