﻿EKDucH.} 
  APPENDIX 
  — 
  MINERAL 
  CATALOGUE. 
  231 
  

  

  Gold. 
  — 
  Native 
  gold 
  in 
  very 
  small 
  and 
  indistinct 
  crystals 
  in 
  the 
  Bob- 
  

   tail, 
  Gunnell, 
  Quartz 
  Hill, 
  near 
  Central. 
  Tarryall 
  Creek, 
  Placer 
  Dig- 
  

   gings, 
  near 
  Fair 
  Play, 
  in 
  imperfect 
  crystals 
  and 
  laminae; 
  in 
  Wash- 
  

   ington 
  and 
  California 
  Gulches, 
  in 
  the 
  placers 
  of 
  Union 
  Park, 
  and 
  

   numerous 
  other 
  localities. 
  Occurring 
  as 
  the 
  result 
  of 
  decomposition 
  

   of 
  the 
  tellurids 
  at 
  Gold 
  Hill. 
  Lately 
  discovered 
  native 
  in 
  great 
  quan- 
  

   tities, 
  though 
  very 
  minutely 
  distributed, 
  in 
  the 
  quartz-ledges 
  of 
  the 
  

   San 
  Juan 
  mining 
  district. 
  At 
  Oro 
  City 
  in 
  rhyolite. 
  Nevada 
  lode 
  in 
  

   azurite. 
  Placers 
  on 
  San 
  Miguel. 
  Very 
  handsome 
  crystals 
  of 
  gold 
  

   (small) 
  have 
  been 
  obtained 
  by 
  Professor 
  Schirmer 
  from 
  the 
  Gunnell 
  

   Lode, 
  Central 
  City. 
  . 
  They 
  occur 
  on 
  black 
  sphalerite, 
  and 
  show 
  com- 
  

   binations 
  of 
  cube, 
  octahedron, 
  and 
  rhombohedron. 
  

  

  GosLAEiTE. 
  — 
  On 
  the 
  dumps 
  of 
  the 
  Wood 
  lode, 
  Leavenworth 
  Gulch, 
  

   near 
  Central. 
  

  

  Graphic 
  granite. 
  — 
  Bear 
  Creek, 
  Jefferson 
  County, 
  near 
  Townshend^s 
  

   Eanch. 
  * 
  Mount 
  Ouray. 
  

  

  Graphite. 
  — 
  Trinidad 
  Mine, 
  Las 
  Animas 
  County. 
  

  

  Greenockite. 
  — 
  On 
  sphalerite 
  of 
  the 
  Dallas 
  mine, 
  Black 
  Hawk; 
  Eun- 
  

   ning 
  Lode, 
  Quartz 
  Hill, 
  Nevada. 
  In 
  mine 
  of 
  galena 
  on 
  South 
  Boul- 
  

   der. 
  

  

  Gypsum. 
  — 
  Is 
  distributed 
  very 
  widely 
  throughout 
  the 
  Cretaceous 
  for- 
  

   mation 
  of 
  Colorado. 
  Good 
  crystals 
  are 
  rare. 
  Selenite 
  is 
  the 
  usual 
  

   form 
  of 
  its 
  occurrence, 
  frequently 
  being 
  found 
  in 
  twins. 
  Occurs 
  also 
  

   in 
  the 
  Upper 
  Carboniferous 
  rocks 
  of 
  Western 
  and 
  in 
  the 
  Tertiary 
  beds 
  

   of 
  Southern 
  Colorado. 
  In 
  Jurassic 
  along 
  the 
  Front 
  Eange. 
  

  

  Halite. 
  — 
  Salt-works 
  of 
  South 
  Park, 
  along 
  some 
  parts 
  of 
  the 
  Platte 
  

   Eiver 
  in 
  springs. 
  Foiind 
  at 
  salt-licks 
  in 
  various 
  parts 
  of 
  the 
  Territory. 
  

   Canon 
  City, 
  Sinbad's 
  Valley, 
  Greenhorn 
  Mountains. 
  

  

  Hematite. 
  — 
  Bear 
  Creek, 
  Jefferson 
  County, 
  Colorado. 
  Specular 
  ob 
  

   Procer 
  Hill, 
  Central, 
  head 
  of 
  Bear 
  Creek 
  ; 
  fibrous 
  and 
  specular 
  in 
  

   Phillips 
  mine, 
  Silver 
  Hills 
  ; 
  in 
  the 
  mines 
  of 
  Elk 
  Mountain 
  district 
  ; 
  

   micaceous 
  on 
  station 
  65 
  of 
  1873 
  ; 
  on 
  Sopris 
  Peak. 
  Unaweep 
  Cafion 
  

   (specular). 
  

  

  Henryite. 
  — 
  Red 
  Cloud 
  Mine, 
  Gold 
  Hill. 
  Cold 
  Spring 
  mine. 
  

  

  HiTCHCOCKiTE. 
  — 
  On 
  copper 
  minerals 
  of 
  the 
  Dallas 
  mine, 
  Black 
  Hawk. 
  

  

  Hornblende. 
  — 
  Occurs 
  in 
  numerous 
  localities 
  in 
  the 
  dikes, 
  so 
  that 
  it 
  

   would 
  be 
  useless 
  to 
  enumerate 
  them. 
  No 
  good 
  crystals 
  were 
  founds 
  

   Eadiated 
  on 
  station 
  43 
  of 
  1873. 
  

  

  Hyalite. 
  — 
  On 
  stations 
  33 
  and 
  34 
  of 
  1873 
  in 
  trachyte. 
  At 
  the 
  Hot 
  

   Sulphur 
  Springs 
  of 
  Middle 
  Park. 
  Basalt 
  of 
  North 
  Man. 
  In 
  the 
  

   trachorheites 
  of 
  the 
  Uncompahgre 
  group. 
  

  

  Idocrase. 
  — 
  Vide 
  Vesuvianite. 
  

  

  Iron. 
  — 
  Native, 
  in 
  the 
  Colorado 
  meteorite 
  found 
  in 
  1866 
  

  

  ISERITE. 
  — 
  Chug 
  Water. 
  

  

  Jamesonite. 
  — 
  Sweet 
  Home 
  mine. 
  San 
  Juan. 
  

  

  Jasper.— 
  Green 
  and 
  red, 
  station 
  33 
  of 
  1873; 
  yellow, 
  red, 
  brown, 
  gray, 
  

   Los 
  Pinos 
  agency. 
  Throughout 
  Middle 
  and 
  South 
  Park. 
  Along 
  Gun- 
  

   nison 
  Eiver 
  (Dakota 
  group). 
  Between 
  Grand 
  and 
  Gunnison. 
  

  

  Jet. 
  — 
  Wet 
  Mountain 
  Valley. 
  Trinchera 
  mesa, 
  Southeast 
  Colorado. 
  

  

  Labradorite. 
  — 
  Near 
  Golden 
  in 
  the 
  dolerites. 
  Near 
  Fair 
  Play 
  in 
  the 
  

   trap-rock. 
  In 
  the 
  dolerites 
  of 
  Colorado. 
  

  

  Lanarkite.— 
  (Mine 
  unknown, 
  but 
  probably 
  in 
  South 
  Park.) 
  

  

  Lead. 
  — 
  Native 
  in 
  Hall 
  Gulch, 
  Summit 
  County. 
  At 
  Breckenridge. 
  An 
  

   announcement 
  of 
  native 
  lead 
  must 
  always 
  -be 
  received 
  with 
  necessary 
  

   caution. 
  The 
  small 
  specimen 
  owned 
  by 
  Professor 
  Schirmer 
  I 
  have 
  

   seen, 
  but 
  although 
  it 
  had 
  a 
  very 
  natural 
  appearance 
  I 
  was 
  unable 
  to 
  

   decide. 
  

  

  