Videos 1 - 10 for Pleochroism

00:08 -16 days ago
Andalusite in plane polarized light, showing pink pleochroism in core and chiastolite cross (oblique cut).
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00:20 -22 days ago
and dark bands). Hornblende shows green pleochroism. High relief grains are orthopyroxene. ... Optical mineralogy hornblende plagioclase inclined extinction pleochroism ...
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00:22 -22 days ago
Chloritoid (large blue and green pleochroic grains) and rutile inclusions inside a large garnet porphyroblast, in plane polarized and cross-polarized light. The rutile shows ...
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00:11 -29 days ago
Biotite with radiation damage haloes developed around accessory minerals (likely zircon or monazite), showing distinct pleochroism in plane polarized light.
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00:22 -29 days ago
Biotite with a radiation damage halo developed around an accessory mineral (likely zircon or monazite), showing pleochroism in plane polarized light, and birds-eye extinction ...
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00:31 -29 days ago
Volcanic orthopyroxene in plane-polarized and cross-polarized light, showing subtle pink-green pleochroism (plane-polarized light) and parallel extinction (cross-polarized light).
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00:11 -29 days ago
Orthopyroxene in plane-polarized light, showing distinctive pink-green pleochroism. Sample from the Adirondacks, NY.
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00:13 -1 month ago
Cordierite in plane polarized light with accessory mineral inclusions, showing yellow pleochroic haloes. Note rutile grain at edge of field of view.
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00:23 -1 month ago
Glaucophane in plane polarized and cross polarized light, showing blue to purple pleochroism. In cross-polarized light, note birds-eye extinction in phengite (muscovite).
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00:09 -1 month ago
Glaucophane in plane polarized light, showing blue to nearly colorless pleochroism. Note green omphacite (sodic clinopyroxene) and pink garnet also.
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