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  • Title is exactly "Biotite granite"

NS17Macro2.JPG
Macroscopic: Grey massive biotite, muscovite granite. Overall white and grey color. Only slightly weathered.  Microscopic: Abundant in alkali feldspar, plagoclase, quartz and mica. Thin section pictures in XPL unless otherwise noted in the title of…

Biotite is variable in amount, but it is always evenly distributed
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