00:15
Pleochroic Biotite in PPL in Thin Section
01:13
Tourmaline in PPL and XPL in thin section
00:12
Polysynthetic twinning in plagioclase
00:16
Undulatory Extinction in Quartz
00:09
Strong pleochroism and simple twinning in amphibole
00:07
Strong pleochroism in biotite under the optical microscope
00:11
Orthopyroxene showing very faint pleochroism
00:20
Parallel Extinction in Orthopyroxene in Thin Section
00:15
Birdseye Extinction in Mica in Thin Section (Optical Microscope)
00:12
Undulatory Extinction in Quartz in XPL (switches to PPL at end)
00:15
Amphibole (var. hornblende) in PPL, showing strong green pleochroism and 60/120-degree cleavage
33:03
Death Valley: A Guided Tour of Its Geologic Story
00:26
Muscovite Showing Birdseye Extinction in Thin Section
00:31
Simple Twin in Clinopyroxene (CPX) in Thin Section
00:30
Calcite in Thin Section
00:28
Schistosity in XPL
00:06
Undulatory Extinction in quartz that was cut too thick
00:17
Birdseye Extinction in Biotite
00:22
Patchy Undulose Extinction in Quartz in Thin Section
04:46
Bryn Mawr Geology Department Microgravity Team - 2011-2012
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