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Staurolite

Staurolite-chloritoid-muscovite schist
Plankogel, Saualpe, Carinthia, Austria
Source: Thin section collection Steinmann-Institut, Universität Bonn
Photos: MMR
Comments and references:
 
  PPL

Section orthogonal to c, b = X ∥ pol plane [A]
Section orthogonal to c, a = Y ∥ pol plane [A]
Section orthogonal to c, b = X near-∥ pol plane (both crystals) [B]
 
 
  +Pol

Section orthogonal to c, Y ∥ pol plane (ext position) [A]
Section orthogonal to c, diagonal position [A]
Section orthogonal to c, diagonal position, +1λ [A]
Section orthogonal to c, diagonal position, +1λ [A]
Sections orthogonal to c, b = X near-∥ pol plane (both crystals) (B)
 

  Additional images

  Image comments

   
 

Width of view   Pol orientation
 
 2 mm
   
 W-E
     

Staurolite
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