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Coesite (pseudomorph) tutorial Optical mineralogy
Автор: Matt Kohn
Загружено: 2021-05-03
Просмотров: 1045
Описание:
Several videos of quartz pseudomorphs after coesite in thin section, showing typical textures and optical characteristics. Supported by Boise State University and the US National Science Foundation.
Key characteristics: Palisade quartz, radiating fractures in surrounding mineral (typically garnet), hole where coesite was plucked.
00:00 Typical former coesite inside highly fractured garnet
00:31 Closeup of palisade quartz
01:01 Nearly completely infilled palisade quartz
01:32 Inside highly fractured clinopyroxene (omphacite)
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