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Viridine

Muscovite-microcline gneiss (leptite)
Ultevis, Sweden
Source: Private collection U. Kramm
Photos: MMR
Comments and references:
Literature: Kramm, U. (1979), Contributions to Mineralogy and Petrology 69, 143-150
 
  PPL

Section orthogonal to c, b = Y ∥ pol plane
Section orthogonal to c, a = X ∥ pol plane
Elongate section ∥ a and c, c = Z ∥ pol plane
Elongate section ∥ a and c, a = X ∥ pol plane
 
 
  +Pol

Section orthogonal to c, diagonal position
Elongate section ∥ a and c, diagonal position
 

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Width of view   Pol orientation
 
 1 mm
   
 W-E
     

Viridine
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