Several videos of clinopyroxenes in thin section, showing typical textures and optical characteristics. Supported by Boise State University and the US National Science Foundation.
Key characteristics: High relief, kind of crappy cleavage c. 90°-90°, faint green pleochroism, low to moderate interference colors, inclined extinction
00:00​ End section showing two cleavages
00:31​ Elongate prism, slight pleochroism, inclined extinction
01:01 Different orientations showing different interference colors
01:32​ Different orientations showing slight pleochroism

02:02​ Higher relief than adjacent hornblende (and quartz)
02:33 Higher relief than adjacent actinolite (and quartz)
03:03 Omphacite (high-pressure sodic pyroxene) in an eclogite
03:34 Omphacite with exsolution
04:04 High-temperature pyroxene with oxide exsolution

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