|       
 |  | Rosenbuschite, eckermanite, aegirine, nepheline thin section    
  
 
View of the Rosenbuschite Eckermanite thin section in 
polarized light (no analyzer). Bright feldspar and nepheline, colored 
eckermanite and aegirine.   
 Same view with the analyzer installed.   
 
Wide field LPNA view.  The violet fluorite is visible. |