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Apatite

Carbonatite
Siilinjärvi, Finland
Source: Thin section collection M.M. Raith
Photos: MMR
Comments and references:
  
  PPL

Section ∥ c, c ∥ pol plane: elongate crystal + oblique section: large crystal
Section ∥ c, diagonal position: elongate crystal
 
 
  +Pol

Section ∥ c, c ∥ pol plane (ext position): elongate crystal + oblique section: large crystal
Section ∥ c, diagonal position (max Δn): elongate crystal
Section ∥ c, diagonal position: elongate crystal, +1λ
 

  Additional images

  Image comments

   
 

Width of view   Pol orientation
 
 2 mm
   
 W-E
     

Apatite
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