|
Biotite (Under Plane Polars)
Slide: BH250-13 
|
Biotite (Under Cross Polars)
Slide: BH250-13 
|
|
More Biotite (Under Plane Polars)
Slide: BH250-14 
|
More Biotite (Under Cross Polars)
Slide: BH250-14 
|