Several videos of titanite in thin section, showing typical textures and optical characteristics. Supported by Boise State University and the US National Science Foundation.
Key characteristics: super high relief, tan, sometimes either brown pleochroism or variable relief, super high interference colors, can be associated with oxides or rutile
00:00 Typically high relief, tan in plane polarized light, high interference colors
00:30 More common shape (wedge, or cross-section of a lentil)
01:00 Rim on oxide
01:31 Unusual pink pleochroism
02:01 Rim on rutile - common in blueschists
02:32 Unusual pleochroic halo