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  TACHYLYTE 
  ASSOCIATED 
  WITH 
  THE 
  G-ABBRO 
  OF 
  CARROCK 
  FELL. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  XII. 
  

  

  Tachylyte 
  from 
  Carrock 
  Fell. 
  

  

  Fig. 
  1. 
  Marginal 
  portion 
  of 
  the 
  vein, 
  showing 
  crystals 
  of 
  felspar, 
  quartz 
  sphe- 
  

   rules, 
  glomerospherites, 
  and 
  granules 
  of 
  pyroxene, 
  imbedded 
  in 
  a 
  

   green 
  glassy 
  basis. 
  X 
  110. 
  

   2. 
  Central 
  portion 
  of 
  the 
  vein 
  showing 
  spherulites 
  and 
  skeleton-crystals 
  of 
  

   felspar 
  imbedded 
  in 
  an 
  orange-coloured 
  network 
  of 
  finely 
  granular 
  

   pyroxene, 
  in 
  the 
  meshes 
  of 
  which 
  the 
  green 
  glassy 
  ground-mass 
  with 
  

   dark 
  pyroxene-grains 
  is 
  seen. 
  X 
  48. 
  

  

  