In some instances a single mineral, a ____, suffices for determination of the pressure and temperature under which a metamorphic rock formed.
A) metamorphic index mineral
B) metamorphic key mineral
C) metamorphic trace mineral
D) metamorphic mica mineral
E) metamorphic pressure-temperature mineral

Question

Quizplus · Accepted Answer

Metamorphic index minerals are minerals that are used to determine the temperature and pressure conditions under which a metamorphic rock formed. These minerals are chosen because they have specific temperature and pressure ranges at which they form, making them good indicators of the conditions the rock experienced during metamorphism.

In Some Instances a Single Mineral, a ____, Suffices for Determination