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Staurolite

Staurolite-garnet-kyanite-mica schist
Val Piora, Ticino, Switzerland
Source: Thin section collection Institut für Mineralogie und Mineralische Rohstoffe, TU Clausthal
Photos: MMR
Comments and references:
 
  PPL

Section orthogonal to c, a = X ∥ pol plane [A]
Section orthogonal to c, a = Y ∥ pol plane [A]
Section ∥a and c, c = Z ∥ pol plane [B]
Section ∥ a and c, a = X ∥ pol plane [B]
 
 
  +Pol

Section orthogonal to c, diagonal position [A]
Section orthogonal to c, diagonal position, +1λ [A]
Section ∥ b (= X) and c (= Z), diagonal position (max Δn) [B]
Section ∥ b (= X) and c (= Z), diagonal position, +1λ [B]
 

  Additional images

  Image comments

   
Kyanite crystal attached to staurolite
 

Width of view   Pol orientation
 
 2 mm
   
 W-E
     

Staurolite
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