Muscovite 
This grain is shown at maximum birefringnence.
Take a look at this grain at extinction to see muscovite's wonderful "bird's eye" mottling.
UNC sample
GSR 1540
Rock type
unknown
Locality
unknown
Muscovite This grain is shown at maximum birefringnence. Take a look at this grain at extinction to see muscovite's wonderful "bird's eye" mottling. |
UNC sample GSR 1540 | |
Rock type unknown | ||
Locality unknown | ||
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