434  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1900,  PART    T. 
North  of  Wells  switch,  or  Julian  Gap,  the  ore  is  being  worked  in  a 
small  drift  with  upshoots.  The  ore  is  a  deep  re<l,  firm  material  with 
flattened  grains  mingled  with  fragments  of  crinoid  stems,  all  of  pure 
hematite.  The  bed  varies  in  thickness,  thinning  from  I  I  down  to  5 
inches  owing  to  a  squeeze  from  the  overlying  shale.  The  average 
thickness  is  about  10  inches  and  it  seems  possible  to  mine  a  bed  as 
thin  as  this  where  there  is  but  a  short  wagon  haul  to  the  switch.  A 
second  scam  of  ore,  6  to  7  inches  thick,  occurs  :>  feet  below,  but  is  not 
worked. 
In  the  valley  east  of  the  Craven  property  considerable  ore  in  lumps 
and  pebbles  of  the  size  of  cobblestones  has  been  strewn  by  erosion 
down  the  stream  gullies  and  over  the  fields.  This  pebbly  ore  is  being 
gathered  and  shipped  to  the  paint  manufacturers. 
The  total  shipments  from  Well-  switch  amount  to  about  50  tons 
per  mont  h. 
In  the  ridge  on  the  east  limb  of  the  White  Oak  Mountain  syncline, 
north  of  Hindi's  switch,  the  red  ore  occurs  apparently  in  two  beds, 
but  examination  discloses  the  fact  that  a  single  bed  of  ore  has  been 
repeated  by  a  close,  overturned  fold.  Locally  the  same  bed  is  dis- 
placed and  repeated  by  faulting,  and  1  mile  south  of  Hindi's  switch 
the  entire  Rockwood  formation  on  the  east  limb  of  the  anticline  is 
engulfed  in  a  fault.  The  ore,  where  it  is  mined  uorth  of  the  railroad 
in  the  east  ridge,  averages  1*_'  inches  in  thickness,  although  it  reaches 
16  inches  in  places.  Within  the  seam  are  a  few  partings  of  shale, 
locally  developed.     Blocks  of  the  ore  show  slickensides  perpendicular 
to  the  bedding.      From  Hindi's  switcl rthward  for  I  miles  sofl  <>re 
has  been  stripped  for  furnace  use.  At  present  underground  drifts 
and  slopes  about  1  mile  north  of  the  railroad,  owned  by  the  Chatta- 
nooga Paint  Company,  arc  in  operation.  About  :;.">  tons  of  paint  ore 
a  week  are  shipped  from  this  point.  The  approximate  composition 
of  t  he  ore  is  as  follows:" 
Analysis  of  ore  from  Chamberlain  tract,  north  of  Hindi's  switch. 
Silica    Si02      L6.45 
Ferric  oxide  i  I'V._,o:i, 80.00 
I  28 
Water    ll<>    I. si 
"  Bow  ron,  W.  M  .,op.  ci1 .,  ]>.  4. 
