﻿Hess 
  and 
  Hunt 
  — 
  Triplite 
  from 
  Eastern 
  Nevada. 
  51 
  

  

  Art. 
  YII 
  — 
  Triplite 
  from 
  Eastern 
  Nevada; 
  by 
  Frank 
  L. 
  

   Hess 
  and 
  W. 
  F. 
  Hunt.* 
  

  

  The 
  triplite 
  described 
  in 
  this 
  paper 
  was 
  found 
  in 
  specimens 
  

   of 
  tungsten 
  ore 
  sent 
  to 
  one 
  of 
  the 
  writers 
  (F. 
  L. 
  H.) 
  by 
  Mr. 
  G-. 
  

   G. 
  Sims, 
  of 
  Aurum, 
  Nevada. 
  As 
  described 
  by 
  Mr. 
  Sims, 
  the 
  

   locality 
  is 
  in 
  the 
  Reagan 
  mining 
  district, 
  about 
  the 
  middle 
  of 
  

   the 
  Kern 
  Range, 
  White 
  Pine 
  County, 
  Nevada. 
  The 
  prospect 
  

   from 
  which 
  the 
  mineral 
  was 
  obtained 
  is 
  six 
  miles 
  from 
  the 
  

   Utah 
  line, 
  25 
  miles 
  east 
  of 
  Aurum 
  and 
  50 
  miles 
  north 
  of 
  

   Osceola. 
  

  

  The 
  country 
  rock 
  is 
  said 
  to 
  be 
  granitic, 
  but 
  among 
  the 
  speci- 
  

   mens 
  received 
  are 
  graphitic 
  schist 
  and 
  other 
  highly 
  meta- 
  

   morphosed 
  rocks. 
  Many 
  dikes 
  cut 
  the 
  older 
  rocks 
  and 
  in 
  

   general 
  both 
  dikes 
  and 
  veins 
  run 
  north 
  and 
  south, 
  paralleling 
  

   the 
  range. 
  

  

  The 
  association 
  of 
  minerals 
  is 
  unusual. 
  The 
  veins, 
  as 
  judged 
  

   from 
  Mr. 
  Sims' 
  description 
  and 
  specimens, 
  are 
  quartz 
  carrying 
  

   wolframite 
  (which 
  is 
  possibly 
  hiibnerite), 
  scheelite 
  (very 
  little), 
  

   pyrite, 
  chalcopyrite 
  (very 
  little), 
  an 
  argentiferous 
  sulphide 
  of 
  

   bismuth 
  and 
  lead 
  which 
  is 
  probably 
  cosalite, 
  native 
  bismuth, 
  a 
  

   little 
  sericite, 
  and 
  the 
  triplite 
  which 
  forms 
  the 
  subject 
  of 
  this 
  

   article. 
  Part 
  of 
  the 
  quartz 
  is 
  of 
  crystalline 
  clarity 
  and 
  has 
  

   been 
  mistaken 
  for 
  topaz. 
  The 
  triplite 
  is 
  in 
  irregular 
  masses, 
  

   the 
  largest 
  of 
  which 
  are 
  less 
  than 
  an 
  inch 
  in 
  diameter. 
  

  

  The 
  ensemble 
  strongly 
  suggests 
  a 
  vein 
  of 
  pegmatitic 
  origin 
  

   and 
  also 
  suggests 
  a 
  relationship 
  to 
  veins 
  in 
  the 
  Deep 
  Creek 
  

   Mountains 
  of 
  Utah, 
  lying 
  about 
  15 
  miles 
  east 
  of 
  and 
  parallel 
  

   to 
  the 
  Kern 
  Range. 
  Certain 
  gold 
  veins 
  in 
  the 
  Deep 
  Creek 
  

   Mountains 
  are 
  thought 
  by 
  B. 
  S. 
  Butlerf 
  to 
  be 
  of 
  pegmatitic 
  

   origin, 
  and 
  in 
  the 
  Clifton 
  district 
  farther 
  north 
  in 
  the 
  same 
  

   mountains 
  and 
  about 
  40 
  miles 
  northeast 
  of 
  the 
  Reagan 
  district 
  

   are 
  scheelite-bearing 
  pegmatites 
  carrying 
  numerous 
  other 
  min- 
  

   erals. 
  Triplite 
  itself 
  can 
  probably 
  be 
  accepted 
  as 
  an 
  essentially 
  

   pegmatitic 
  mineral 
  and 
  its 
  presence 
  in 
  a 
  vein 
  would 
  seem 
  to 
  

   indicate 
  that 
  the 
  vein 
  was 
  either 
  a 
  phase 
  of 
  a 
  pegmatite 
  or 
  

   deposited 
  from 
  magmatic 
  waters. 
  All 
  the 
  analyses 
  quoted 
  in 
  

   this 
  paper 
  are 
  of 
  specimens 
  either 
  from 
  pegmatites 
  or 
  from 
  

   veins 
  closely 
  related 
  to 
  pegmatites, 
  among 
  which 
  are 
  tin- 
  

   bearing 
  veins. 
  

  

  JNTot 
  only 
  is 
  the 
  Reagan 
  district 
  a 
  new 
  locality 
  for 
  this 
  some- 
  

   what 
  rare 
  mineral, 
  but 
  the 
  variety 
  here 
  represented 
  is 
  rather 
  

   different 
  from 
  previously 
  described 
  types 
  and 
  a 
  short 
  descrip- 
  

   tion 
  is 
  deemed 
  desirable. 
  

  

  * 
  Published 
  by 
  permission 
  of 
  the 
  Director 
  of 
  the 
  United 
  States 
  Geological 
  

   Survey. 
  

  

  \ 
  Personal 
  communication. 
  

  

  