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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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Fochaian Fochaian
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8 years ago
Although muscovite, feldspar and quartz are not considered useful as index minerals, which of the following situations could be useful in determining the grade of metamorphism in a region?
A) The coexistence of muscovite, feldspar and quartz.
B) The coexistence of feldspar and quartz.
C) The disappearance of rocks containing quartz.
D) The disappearance of rocks containing muscovite and quartz.
Textbook 
How Does Earth Work? Physical Geology and the Process of Science

How Does Earth Work? Physical Geology and the Process of Science


Edition: 2nd
Authors:
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GurshGursh
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8 years ago
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Fochaian Author
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#2
8 years ago
Makes total sense now, marking this solved
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#3
8 years ago
Glad my interpretation was correct, will be around if you need anything else
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