﻿450 
  JOURNAL 
  OF 
  THE 
  WASHINGTON 
  ACADEMY 
  OF 
  SCIENCES 
  VOL. 
  12, 
  NO. 
  20 
  

  

  beyond 
  the 
  outcrop 
  for 
  some 
  distance 
  to 
  the 
  northeast. 
  Apparently 
  

   the 
  vein 
  does 
  not 
  outcrop 
  on 
  the 
  southwest 
  side 
  of 
  the 
  road, 
  but 
  quartz 
  - 
  

   rutile-ilmenite 
  fragments 
  are 
  scattered 
  over 
  the 
  surface 
  for 
  a 
  short 
  

   distance. 
  Like 
  the 
  numerous 
  quartz 
  veins 
  within 
  the 
  area 
  the 
  rutile- 
  

   bearing 
  vein 
  apparently 
  conforms 
  with 
  the 
  structure 
  of 
  the 
  inclosing 
  

   schists, 
  since 
  it 
  has 
  a 
  strike 
  of 
  N. 
  60° 
  E. 
  and 
  dips 
  80-85° 
  S.E. 
  It 
  

   will 
  not 
  exceed 
  50 
  feet 
  in 
  width. 
  

  

  The 
  vein 
  was 
  prospected 
  for 
  rutile 
  about 
  10 
  years 
  ago 
  with 
  the 
  

   reported 
  result 
  that 
  considerable 
  rutile 
  was 
  obtained, 
  but 
  nothing 
  

   could 
  be 
  learned 
  of 
  its 
  disposition. 
  Development 
  work 
  was 
  con- 
  

   fined 
  to 
  the 
  outcrop 
  portion 
  of 
  the 
  vein. 
  It 
  comprised 
  a 
  cut 
  60 
  feet 
  

   long 
  by 
  an 
  average 
  of 
  5 
  feet 
  deep 
  opened 
  in 
  the 
  vein. 
  The 
  cut 
  ex- 
  

   tended 
  from 
  the 
  road 
  in 
  a 
  N. 
  60° 
  E. 
  direction 
  (strike 
  of 
  the 
  vein), 
  

   and 
  southwestward 
  under 
  the 
  road 
  for 
  an 
  additional 
  distance 
  of 
  30 
  

   feet. 
  On 
  the 
  north 
  edge 
  of 
  the 
  road 
  a 
  shaft 
  was 
  sunk 
  in 
  the 
  vein 
  from 
  

   the 
  bottom 
  of 
  the 
  cut 
  for 
  a 
  depth 
  of 
  30 
  feet. 
  Most 
  of 
  the 
  vein, 
  so 
  far 
  as 
  

   the 
  development 
  work 
  discloses, 
  is 
  entirely 
  barren, 
  neither 
  rutile 
  nor 
  

   ilmenite 
  having 
  been 
  observed 
  by 
  the 
  writer 
  in 
  its 
  outcrop 
  portion. 
  

   The 
  rutile 
  obtained 
  was 
  derived 
  chiefly 
  from 
  the 
  shaft 
  and 
  to 
  a 
  less 
  ex- 
  

   tent 
  from 
  that 
  part 
  of 
  the 
  open 
  cut 
  near 
  the 
  shaft. 
  

  

  The 
  surface 
  in 
  the 
  vicinity 
  of 
  the 
  shaft, 
  especially 
  along 
  the 
  road 
  

   side, 
  is 
  reported 
  to 
  have 
  been 
  thickly 
  covered 
  with 
  fragments 
  of 
  quartz 
  

   containing 
  rutile 
  crystals 
  and 
  of 
  loose 
  crystals 
  of 
  rutile 
  free 
  from 
  quartz, 
  

   but 
  most 
  of 
  them 
  have 
  been 
  taken 
  away. 
  

  

  Small 
  crystals 
  of 
  rutile 
  and 
  fragments 
  of 
  vein 
  quartz 
  with 
  rutile 
  

   were 
  found 
  on 
  the 
  J. 
  S. 
  Oyler 
  place 
  about 
  1 
  mile 
  northwest 
  of 
  the 
  ru 
  tile- 
  

   bearing 
  quartz 
  vein 
  on 
  the 
  Maxey 
  place. 
  Although 
  no 
  outcrop 
  of 
  a 
  

   vein 
  was 
  noted 
  in 
  this 
  locality, 
  the 
  surface 
  indications 
  undoubtedly 
  

   suggest 
  the 
  occurrence 
  of 
  a 
  rutile-bearing 
  quartz 
  vein 
  of 
  similar 
  char- 
  

   acter 
  to 
  the 
  one 
  on 
  the 
  Maxey 
  place. 
  

  

  MINERALOGY 
  OF 
  THE 
  VEIN 
  

  

  The 
  mineralogy 
  of 
  the 
  vein 
  is 
  very 
  simple. 
  It 
  is 
  composed 
  almost 
  

   throughout 
  of 
  white 
  vitreous 
  quartz 
  with, 
  locally, 
  rutile 
  and 
  ilmenite, 
  

   which 
  are 
  the 
  only 
  other 
  minerals 
  observed. 
  It 
  is 
  entirely 
  massive 
  

   and 
  without 
  evidence 
  of 
  mashing. 
  

  

  Quartz. 
  — 
  In 
  thin 
  sections 
  under 
  the 
  microscope 
  the 
  quartz 
  forms 
  a 
  

   mosaic 
  of 
  interlocking 
  angular 
  grains 
  that 
  are 
  colorless 
  and 
  transparent, 
  

   remarkably 
  free 
  from 
  inclusions, 
  and 
  of 
  exceptional 
  purity. 
  The 
  

  

  