GEOL423

Optical Mineralogy

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Prerequisite: GEOL100 or GEOL120; and GEOL110; and GEOL322. And CHEM131 and CHEM132; or (CHEM135 and CHEM136); or CHEM103. Restriction: Non-degree-seeking students require the permission of the instructor. The optical behavior of crystals with emphasis on the theory and application of the petrographic microscope.

Fall 2025

Megan Newcombe

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Past Semesters

Sarah Penniston-Dorland

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Sarah Penniston-Dorland

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Sarah Penniston-Dorland

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Sarah Penniston-Dorland

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Katherine Bermingham

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Marion Le Voyer

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During the Spring 2020 and Spring 2021 semesters, students could choose to take some of their courses pass-fail mid-semester which skews grade data aggregated across multiple semesters.

Average GPA of 2.74 between 172 students*

GEOL423 Grade Distribution+-051015202530354045% of studentsABCDFWother
A-: 11.63%
A: 12.21%
A+: 4.07%
B-: 13.37%
B: 15.7%
B+: 11.05%
C-: 5.23%
C: 7.56%
C+: 8.14%
D+: 1.74%
F: 1.16%
W: 7.56%
other: 0.58%
* "W"s are considered to be 0.0 quality points. "Other" grades are not factored into GPA calculation. Grade data not guaranteed to be correct.