﻿NO. 
  1952. 
  NEW 
  METEORITE 
  FROM 
  CULLI80N, 
  KANSAS— 
  MERRILL. 
  327 
  

  

  In 
  slicing 
  this 
  stone 
  the 
  saw 
  passed 
  through 
  the 
  larger 
  diameter 
  of 
  a 
  

   nodular 
  mass 
  some 
  10 
  by 
  17 
  mm. 
  of 
  a 
  distinctly 
  lighter, 
  somewhat 
  

   greenish-white 
  color, 
  which 
  from 
  its 
  sharp 
  boundaries 
  at 
  once 
  excited 
  

   interest, 
  and 
  steps 
  were 
  taken 
  to 
  secure 
  a 
  thin 
  section 
  without 
  wholly 
  

   destro}TJig 
  the 
  material. 
  (See 
  pi. 
  55, 
  figs. 
  1 
  and 
  2.) 
  This 
  section, 
  

   when 
  placed 
  under 
  the 
  microscope, 
  was 
  found 
  to 
  be 
  composed, 
  with 
  

   the 
  exception 
  of 
  a 
  few 
  grains 
  of 
  troilite, 
  wholly 
  of 
  the 
  twinned 
  pyroxene 
  

   noted 
  as 
  occurring 
  sporadically 
  in 
  the 
  body 
  of 
  the 
  meteorite. 
  It 
  is 
  

   to 
  be 
  noted, 
  however, 
  that 
  the 
  structure 
  is 
  not 
  chondritic, 
  but 
  the 
  

   entire 
  mass 
  is 
  made 
  up 
  of 
  granular 
  and 
  columnar 
  forms 
  elongated 
  

   parallel 
  mth 
  the 
  vertical 
  axes, 
  all 
  closely 
  interknit, 
  with 
  no 
  residual 
  

   glass, 
  forming 
  the 
  hypidiomorpliic 
  granular 
  structure 
  of 
  Rosenbusch. 
  

   Though 
  an 
  abundant 
  constituent 
  of 
  the 
  surrounding 
  mass, 
  no 
  me- 
  

   tallic 
  iron 
  could 
  be 
  detected 
  in 
  the 
  body 
  of 
  the 
  nodule. 
  The 
  dark 
  

   points 
  shown 
  in 
  the 
  photograph 
  are 
  of 
  iron 
  sulphide. 
  

  

  Incidental 
  to 
  this 
  inclosure 
  attention 
  should 
  be 
  called 
  to 
  another 
  

   structural 
  feature 
  of 
  even 
  greater 
  import. 
  This 
  is 
  a 
  somewhat 
  

   indistinct 
  wav}^ 
  banding 
  visible 
  only 
  on 
  a 
  polished 
  surface. 
  Close 
  

   inspection 
  shows 
  this 
  to 
  be 
  due 
  to 
  elongated, 
  illy 
  defined 
  areas 
  of 
  a 
  

   dark 
  greenish 
  color 
  with 
  intervening 
  wavy, 
  narrower 
  bands, 
  some- 
  

   times 
  mere 
  lines, 
  of 
  a 
  darker 
  hue. 
  The 
  wider 
  greenish 
  bands 
  are 
  

   thicldy 
  studded 
  with 
  rounded 
  spots 
  caused 
  by 
  chondrules, 
  wliich 
  are 
  

   much 
  less 
  abundant 
  in 
  the 
  dark 
  bands. 
  The 
  metallic 
  particles, 
  both 
  

   sulpliide 
  and 
  native 
  iron, 
  seem 
  to 
  be 
  disseminated 
  through 
  all 
  por- 
  

   tions 
  alike. 
  The 
  effect 
  is 
  of 
  a 
  nature 
  that 
  might 
  be 
  produced 
  by 
  a 
  

   shearing 
  force 
  exerted 
  on 
  a 
  body 
  already 
  solidified 
  but 
  still 
  capable 
  

   of 
  yielding; 
  in 
  other 
  words, 
  it 
  corresponds 
  apparently 
  with 
  the 
  

   sclilieren 
  structure 
  of 
  terrestrial 
  rocks. 
  That 
  this 
  structure 
  is 
  actual 
  

   is 
  further 
  shown 
  by 
  the 
  tendency 
  of 
  the 
  larger 
  metallic 
  sulphides 
  

   to 
  be 
  elongated 
  in 
  this 
  same 
  general 
  direction. 
  It 
  is 
  further 
  to 
  be 
  

   noted 
  that 
  minute 
  rifts 
  which 
  have 
  opened 
  in 
  the 
  stone 
  since 
  its 
  

   fall, 
  and 
  are 
  obviously 
  due 
  to 
  exposure, 
  all 
  tend 
  in 
  the 
  same 
  general 
  

   direction. 
  Indeed 
  it 
  seems 
  probable 
  that 
  the 
  shape 
  of 
  the 
  mass 
  as 
  

   found 
  is 
  due 
  to 
  a 
  natural 
  tendency 
  to 
  exfoliation 
  along 
  these 
  lines, 
  

   the 
  maximum 
  dimensions 
  given 
  on 
  page 
  326 
  bemg 
  those 
  parallel 
  

   with 
  the 
  schlieren 
  lines 
  mentioned. 
  

  

  Tliis 
  structure 
  is 
  brought 
  out 
  somewhat 
  obscurely 
  in 
  figure 
  2 
  of 
  

   plate 
  55 
  from 
  a 
  photograph 
  of 
  a 
  polished 
  slice, 
  and 
  reproduced 
  about 
  

   two-thirds 
  of 
  the 
  actual 
  size. 
  In 
  the 
  upper 
  left 
  is 
  shown 
  the 
  pyroxene 
  

   inclosure 
  already 
  described. 
  An 
  irregular 
  band 
  some 
  10 
  mm. 
  in 
  

   width 
  is 
  conspicuous, 
  extending 
  entirely 
  across 
  the 
  surface 
  from 
  left 
  

   to 
  right 
  just 
  below 
  this 
  inclosure, 
  and 
  shorter 
  areas 
  again 
  below 
  this. 
  

   An 
  attempt 
  was 
  made 
  to 
  bring 
  out 
  this 
  structure 
  still 
  more 
  clearly 
  

   in 
  figure 
  1 
  of 
  this 
  plate 
  fi'om 
  a 
  photographic 
  enlargement 
  of 
  about 
  

   five 
  diameters. 
  The 
  mclosure 
  is 
  here 
  seen 
  imbedded 
  in 
  a 
  darker 
  

  

  