﻿370 
  Jucld 
  and 
  Hidden 
  — 
  Ruby 
  in 
  Noi-th 
  Carolina. 
  

  

  Art. 
  XLIY. 
  — 
  On 
  a 
  neio 
  mode 
  of 
  occurrence 
  of 
  Ruby 
  in 
  North 
  

   Carolina;'^ 
  by 
  J. 
  W. 
  Judd 
  and 
  W. 
  E. 
  Hidden. 
  With 
  

   Crystallographic 
  Notes 
  by 
  J. 
  H. 
  Pratt. 
  

  

  Parts 
  of 
  the 
  State 
  of 
  E'ortli 
  Carolina, 
  with 
  adjoining 
  areas 
  

   in 
  South 
  Carolina 
  and 
  Georgia, 
  have 
  long 
  been 
  known 
  to 
  

   mineralogists 
  and 
  geologists 
  as 
  among 
  the 
  most 
  interesting 
  of 
  

   corundum 
  localities 
  ; 
  and 
  the 
  researches 
  of 
  the 
  late 
  Dr. 
  Genth, 
  

   Col. 
  Joseph 
  Willcox, 
  Mr. 
  J. 
  Yolney 
  Lewis 
  and 
  many 
  other 
  

   authors 
  have 
  done 
  much 
  to 
  make 
  clear 
  the 
  mode 
  of 
  occurrence 
  

   and 
  associations 
  of 
  corundum 
  in 
  this 
  area 
  and 
  in 
  the 
  great 
  

   corundiferous 
  belt 
  stretching 
  along 
  the 
  line 
  of 
  the 
  Appalachian 
  

   crystalline 
  area 
  from 
  Alabama 
  in 
  the 
  south 
  to 
  Maine 
  in 
  the 
  

   north. 
  Quite 
  recently 
  Dr. 
  J. 
  H. 
  Pratt 
  has 
  published 
  a 
  very 
  

   interesting 
  and 
  admirable 
  discussion 
  of 
  " 
  The 
  origin 
  of 
  the 
  

   Corundum 
  associated 
  with 
  the 
  Peridotites 
  of 
  North 
  Carolina."f 
  

  

  But 
  of 
  the 
  existence 
  in 
  any 
  part 
  of 
  this 
  area, 
  or 
  indeed 
  in 
  

   any 
  part 
  of 
  the 
  continent 
  of 
  America, 
  of 
  the 
  red 
  transparent 
  

   variety 
  of 
  the 
  mineral, 
  to 
  which 
  the 
  term 
  Puby 
  is 
  properly 
  

   restricted, 
  there 
  appears 
  to 
  have 
  been 
  no 
  knowledge 
  till 
  about 
  

   15 
  years 
  ago 
  (1884). 
  Nor 
  has 
  there 
  been, 
  as 
  yet, 
  any 
  notice 
  

   published 
  of 
  the 
  discovery 
  in 
  any 
  scientific 
  journal 
  or 
  magazine, 
  

   unless 
  we 
  except 
  the 
  brief 
  mention 
  made 
  in 
  the 
  Annual 
  Statis- 
  

   tical 
  volume 
  entitled 
  Mineral 
  Eesources 
  of 
  the 
  United 
  States, 
  

   published 
  under 
  the 
  auspices 
  of 
  the 
  U. 
  S. 
  Geological 
  Survey.:^ 
  

  

  Some 
  few 
  additional 
  notes 
  upon 
  this 
  interesting 
  occurrence 
  

   have 
  been 
  published, 
  including 
  press 
  notices, 
  but 
  nothing 
  of 
  a 
  

   strictly 
  scientific 
  character. 
  We 
  may 
  state 
  that 
  one 
  of 
  us 
  has 
  

   during 
  the 
  past 
  five 
  years 
  frequently 
  visited 
  the 
  scene 
  of 
  this 
  

   discovery, 
  and 
  that 
  from 
  time 
  to 
  time 
  we 
  have 
  conjointly 
  

   examined 
  many 
  of 
  the 
  cut 
  specimens 
  and 
  natural 
  crystals 
  of 
  

   the 
  rubies 
  from 
  the 
  Cowee 
  district 
  of 
  North 
  Carolina, 
  and 
  that 
  

   in 
  our 
  opinion 
  their 
  beauty 
  and 
  color 
  appear 
  to 
  be 
  in 
  no 
  way 
  

   inferior 
  to 
  those 
  from 
  the 
  Mogok 
  district 
  of 
  Burma. 
  

  

  As 
  the 
  material 
  in 
  which 
  these 
  rubies 
  were 
  found 
  appeared 
  

   so 
  strikingly 
  similar 
  to 
  the 
  alluvium 
  and 
  gravel 
  in 
  which 
  the 
  

   Burma 
  rubies 
  are 
  obtained, 
  it 
  at 
  one 
  time 
  seemed 
  highly 
  prob- 
  

   able 
  that 
  when 
  the 
  thick 
  masses 
  of 
  superficial 
  and 
  detrital 
  

   material 
  could 
  be 
  sunk 
  through, 
  the 
  rock 
  in 
  which 
  the 
  rubies 
  

   would 
  be 
  found 
  in 
  situ 
  would 
  prove 
  to 
  be 
  a 
  limestone 
  like 
  

  

  * 
  From 
  advance 
  sheets 
  of 
  the 
  Mineralogical 
  Magazine 
  and 
  Journal 
  of 
  the 
  

   Mineralogical 
  Society, 
  vol. 
  xii, 
  No. 
  56 
  (October, 
  1899). 
  

  

  f 
  This 
  Journal, 
  IV, 
  vol. 
  vi, 
  1898, 
  p. 
  49. 
  

  

  j:15th 
  Annual 
  Report, 
  1893-94, 
  U. 
  S. 
  Geol. 
  Survey, 
  volume 
  on 
  Mineral 
  

   Resources 
  of 
  the 
  United 
  States, 
  Washington, 
  1894, 
  p. 
  693; 
  ibid., 
  16th 
  Annual 
  

   Report, 
  part 
  iv, 
  p. 
  599; 
  ibid., 
  I7th 
  Annual 
  Report, 
  part 
  iii, 
  p. 
  905, 
  

  

  