156  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1904.         [bull.  260. 
in  the  bed  rock  at  this  locality,  and  as  the  Pleistocene  sand  at  this  and 
the  other  placer  workings  of  the  region  yields  colors  by  panning,  it  is 
evident  that  the  Pleistocene  deposits  are  the  local  source  of  the  pay 
dirt. 
The  gold  is  always  associated  with  magnetite  ("  black  sand  ")  and 
garnet  ("  ruby  ")  sand,  and  in  some  places  with  considerable  quan-  ' 
tities  of  pyrite  in  small  grains.  Although  the  gold  is  always  asso4-| 
ciated  with  "  ruby  "  sand,  it  often  happens  that  where  the  latter  iyj 
most  abundant  the  gold  may  be  lacking,  except  in  very  small  quan-  1 
tities.  Small  amounts  of  platinum  and  iridosmine  (an  alloy  oft! 
iridium,  osmium,  platinum,  rhodium,  and  ruthenium)  occur  with  , 
the  gold  and  are  probably  derived  from  the  same  source  as  the  latter,  j 
Whether  the  platinum  and  iridosmine  are  found  in  paying  quantities  j 
was  not  learned  by  the  writer. 
The  gold  is  found  in  worn  flakes  varying  in  size  from  particles  fine 
enough  to  float  to  pieces  worth  15  or  20  cents.     The  largest  piece  I 
found  on  this  beach  was  worth  a  dollar.     The  gold  is  quite  uniform 
in  composition,  assaying  from  18.12  to  19.20  carats. 
Mining  is  carried  on  by  the  usual  sluice-box  method,  the  water  | 
being  taken  from  a  near-by  stream  and  conveyed  to  the  workings  in  i] 
a  wooden  flume.     The  gold  is  removed  from  the  riffle  concentrates  bv 
«  ...'■'  J 
panning.     Although   no   definite   estimate   could  be   obtained,   it  is 
probable  that  the  claims  along  here  yield  from  $2  to  $5  per  day  per  ■■■J1 
man  by  the  methods  now  in  vogue.     More  elaborate  methods  would 
doubtless  greatly  increase  this  output. 
Ozette  placers. — The  physiographic  and  geologic  conditions  for  2 
miles  north  of  the  mouth  of  Ozette  River  are  similar  to  those  north  i 
of  Point  of  the  Arches,  and  pay  sand  occurs  here  in  the  same  way  as  ij 
it  does  at  the  latter  locality.     The  claims  along  this  stretch  of  the  j 
coast  have  not  been  very  thoroughly  prospected  owing  to  lack  of  ! 
available  water,  but  from  the  tests  made  the  gold  and  associated  min- 
erals are  similar  to  those  found  farther  north  and  occur  in  paying 
quantities.    On  account  of  the  scarcity  of  water  at  this  locality  rock- 
ers have  been  used  exclusively  in  the  prospecting  and  mining  opera-  j 
tions.    Water  will  have  to  be  brought  from  Ozette  River  or  some  oi  | 
its  tributaries  before  the  claims  in  this  district  can  be  very  profitably 
worked. 
Yellow  Banks  placers. — Six  miles  south  of  the  mouth  of  Ozette  , 
River  is  a  locality  known  as  Yellow  Banks.     The  place  derives  ifr  j 
name   from   the   characteristic  yellowish   brown   or   "  rusty  "   bluff' 
which  skirt  the  coast  in  this  vicinity,  and  which  at  one  place  attair 
a  height  of  over  125  feet.     These  bluffs  consist  of  roughly  horizon  j 
tally  bedded  Pleistocene  sands  and  gravels,  which  continue  below  th<  j 
surface  of  the  beach,  no  bed  rock  being  visible  either  on  the  beach  oi 
in  the  bluff. 
