﻿202 
  H. 
  L. 
  Preston 
  — 
  Illinois 
  Gulch 
  Meteorite. 
  

  

  On 
  etching 
  the 
  iron, 
  no 
  distinct 
  figures 
  of 
  any 
  character 
  

   were 
  brought 
  out, 
  but 
  a 
  surface 
  of 
  a 
  dark 
  gray 
  groundmass 
  

   was 
  left 
  filled 
  with 
  bright 
  silvery- 
  white 
  flakes, 
  without 
  any 
  defi- 
  

   nite 
  form, 
  or 
  sharp 
  line 
  of 
  contact, 
  between 
  them 
  and 
  the 
  dark 
  

   grey 
  groundmass. 
  

  

  Over 
  the 
  surface 
  are 
  scattered 
  in 
  single 
  crystals, 
  occasionally 
  

   in 
  groups, 
  a 
  very 
  dark 
  steel 
  gray 
  crystallization, 
  from 
  \ 
  to 
  l 
  mm 
  

   in 
  length 
  and 
  -| 
  mm 
  or 
  less 
  in 
  width, 
  that 
  are 
  probably 
  the 
  

   phosphide 
  of 
  iron 
  and 
  nickel, 
  rhabdite. 
  

  

  The 
  character 
  of 
  the 
  etched 
  surface 
  of 
  this 
  iron 
  is 
  more 
  

   nearly, 
  lacking 
  the 
  supposed 
  rhabdite 
  crystals, 
  like 
  the 
  Mor- 
  

   rodal 
  Norway 
  siderite, 
  than 
  any 
  other 
  with 
  which 
  I 
  am 
  

   acquainted. 
  

  

  This 
  mass 
  is 
  in 
  the 
  possession 
  of 
  Ward's 
  Natural 
  Science 
  

   Establishment, 
  and 
  when 
  received 
  by 
  them 
  weighed 
  2,435 
  

   grams, 
  but 
  at 
  that 
  time 
  a 
  fragment 
  weighing 
  possibly 
  fifteen 
  

   grams 
  had 
  been 
  chiseled 
  off 
  the 
  end 
  of 
  the 
  narrow 
  neck. 
  

  

  An 
  analysis 
  of 
  this 
  siderite 
  by 
  Mariner 
  and 
  Hoskins, 
  of 
  

   Chicago, 
  gave 
  

  

  Fe 
  92-51 
  

  

  Ni._ 
  6-70 
  

  

  Co 
  .- 
  -16 
  

  

  Si 
  . 
  _ 
  _ 
  trace 
  

  

  P 
  -62 
  

  

  C 
  ._- 
  -oi 
  • 
  

  

  100-00 
  

   Specific 
  gravity 
  7*7. 
  

  

  This 
  meteorite 
  will 
  be 
  designated 
  the 
  "Illinois 
  Gulch 
  

   meteorite, 
  Deer 
  Lodge 
  County, 
  Montana. 
  

  

  