2. Consider two cases where an inclusion of sylvite is surrounded by calcite in thin section: in case one, calcite is oriented with its ordinary ray vibration direction parallel to the lower polarizer, and in case two, the extraordinary ray vibration direction is parallel to the lower polarizer. Do the following for each case and support your answer with diagrams: a. Describe and explain the relief of sylvite in calcite. [4] Be sure to report and refer to the index/indices of refraction of each mineral. [2] b. Explain the formation of the Becke Line in both scenarios. [4].