Match the index mineral with the correct metamorphic grade(s). For these purposes, please remember that for a mineral to be part of two metamorphic grades, it should make up at least one-third of both grades
A) Low grade
B) Low to medium grade
C) Medium to high
D) Medium grade
E) High grade
1) Chlorite
2) Staurolite
3) Muscovite
4) Garnet
5) Sillimanite
Answers: 1) A 2) D 3) B 4) C 5) E
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