diller.]  REDDING    QUADRANGLE,    CALIFORNIA.  173 
includes  the  mine  of  the  Mountain  Copper  Company  just  outside  of 
the  Redding"  quadrangle,  but  prospecting  is  rapidly  advancing-  within 
the  quadrangle. 
Spread  Eagle  lode. — The  King  Copper,  Loraine,  and  Spread  Eagle 
prospects  are  in  the  general  course  of  the  Iron  Mountain  lode.  The 
open  cuts  and  tunnels  of  the  first  two  were  not  greatly  extended  dur- 
ing the  year,  but  the  Spread  Eagle  had  a  considerable  force  at  work 
tunneling  beneath  the  large  outcrop  of  gossan,  which  appears  to  strike 
N.  74°-80°  W. ,  approximately  parallel  with  one  of  the  ore  bodies  of 
the  King  Copper,  and  at  a  high  angle  to  the  general  course  of  the  Iron 
Mountain  lode.  The  ore  is  traversed  in  several  cases  by  fractures 
along  which  there  is  evidence  of  shearing  both  in  the  ore  body  and 
country  rock.  The  fractures  extend  about  N.  80°  E.,  dip  steeply  to 
the  southeast,  and  were  formed  later  than  the  ore  body.  Beneath  the 
gossan  the  ore,  almost  wholly  pyrite,  is  generally  wet  from  surface 
waters  and  soft,  so  as  to  be  easily  crushed  to  a  granular  mass.  In 
places  it  is  cemented  by  small  quantities  of  quartz  gangue.  At  greater 
depths,  as  shown  in  the  lowest  tunnel,  small  masses  of  chalcopyrite 
appear,  but  at  this  level  in  July,  1903,  no  large  bodies  of  ore  had  yet 
been  reached. 
Balaklala  lode. — The  Balaklala  lode  is  one  of  the  largest  of  the  Iron 
Mountain  district.  Development  was  actively  pushed  by  Superintend- 
ent Grant  Snyder.  A  considerable  force  of  men  was  employed  and 
electrical  light  and  power  introduced.  The  lode  is  well  marked  in 
places  by  a  heavy  gossan  and  has  been  traced  more  or  less  continuously 
for  over  half  a  mile.  It  lies  in  the  slope  of  the  South  Fork  of  Squaw 
Creek  nearly  parallel  to  the  surface  and  strikes  about  N.  70°  E.  with 
dip  to  the  northwest  somewhat  steeper  than  the  slope  on  which  it 
occurs.  The  principal  ore  body  known  in  this  lode,  the  Windy  Camp, 
has  been  followed  along  the  strike  for  nearly  1,000  feet,  and  on  the 
dip  for  over  500  feet.  It  has  an  irregular  thickness  ranging  from  a 
few  feet  to  over  twenty  and  appears  to  pitch  to  the  northeast.  At  the 
northeastern  end  of  the  lode,  where  great  masses  of  gossan  occur,  com- 
paratively little  is  known  of  the  ore  bodies.  The  ore  is  chiefly  pyrite 
with  more  or  less  chalcopyrite,  but  generally,  like  other  bodies  in  this 
portion  of  the  district,  is  of  comparatively  low  grade.  Quartz  is  the 
only  gangue  mineral.  Although  disseminated  in  small  quantities  yet 
it  forms  a  larger  percentage  of  the  ore  than  at  Iron  Mountain. 
In  the  Shasta  King  development  work  continues  with  a  smaller  force 
than  last  year,  although  the  same  company,  the  Trinity  Copper  Com- 
pany, A.  H.  Brown,  general  manager,  has  exploited  under  bond  a 
number  of  other  properties  in  the  immediate  neighborhood.  One  of  the 
most  interesting  discoveries  was  barite  locally  as  a  gangue  mineral  in 
the  sulphide  ores.  In  the  Bully  Hill  region  greater  values  generally 
accompany  barite,  and  its  occurrence  in  the  western  district  is  a  matter 
