3. (5 points) Critical thinking and discussion questions. Use complete sentences, correct spelling, and the information presented in open resourses  to answer the questions below.

The size of crystals in igneous rocks is generally a function of the rate of cooling. However, within the same rock crystal size does not necessarily reflect the order of crystallization for individual minerals. Without using Bowen’s Reaction Series, how might you determine the order of crystallization of minerals in an individual rock sample? (Hint: Think about the texture.)

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Question 2 (5 points)

1. (5 points) Critical thinking and discussion questions. Use complete sentences, correct spelling, and the information presented in open resourses to answer the questions below.

Overall, the physical properties of minerals provide a reliable means to identify common minerals. However, certain properties can exhibit a range of characteristics or values making them less useful for identification purposes. Choose three physical properties that might vary considerably between samples of the same mineral and explain why such variability would exist.

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