QQuestionGeology
QuestionGeology
"How can you tell a phyllite from a schist?
A. A phyllite will display light and dark bands.
B. A schist will break into flat sheets.
C. A schist will appear glittery due to the coarse-grained mica in it.
D. None of the choices are correct."
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Answer
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Step 1Let's solve this geology identification problem step by step:
Step 2: Understand the Key Characteristics of Phyllite and Schist
- Phyllite is a low-grade metamorphic rock with a foliated (layered) texture - Schist is a medium to high-grade metamorphic rock with a more pronounced foliation
Final Answer
A schist will break into flat sheets. The key distinguishing feature of a schist is its ability to split into flat sheets due to its strongly aligned platy minerals, a property geologists call schistosity.
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