dillkr.]  REDDING    QUADRANGLE,    CALIEORNIA.  175 
sulphides,  such  as  bornite  and  chalcocite,  and  also  in  the  presence  of 
barite  as  a  gangue  mineral  associated  with  the  greater  values. 
In  Bully  Hill  there  are  two  lodes  which  for  convenience  may  be 
designated  the  Delamar  and  Anchor.  The  lirst  is  worked  in  the  Bully 
Hill  mine  and  the  last  in  the  Rising  Star.  Both  are  under  the  general 
management  of  H.  A.  Cohen  and  are  operated  by  the  same  company. 
These  ores  are  sent  to  the  .smelter  at  Delamar,  which  has  been  consid- 
erably enlarged  during  the  }^ear. 
Delamar  lode. — The  Delamar  lode  has  thus  far  yielded  the  greater 
part  of  the  Bully  Hill  values,  and  within  the  last  year  has  been  devel- 
oped chiefly  in  depth  to  about  800  feet  beneath  the  surface  or  to  1,180 
feet  above  the  sea.  It  is  interesting  to  note  that  bornite  continues  to 
form  an  important  part  of  the  ore,  with  barite  as  gangue,  at  the  great- 
est depths  yet  reached,  and  according  to  Mr.  Keating  chalcocite  has 
lately  been  found  at  the  same  level.  The  silver  values,  too,  are 
reported  to  be  of  importance.  It  is  evident  that  the  bottom  of  the 
zone  of  enrichment  has  not  yet  been  attained  and  gives  promise  of 
continued  values  at  greater  depths. 
Anchor  lode. — The  Anchor  lode,  although  worked  years  ago,  was 
opened  up  afresh  at  a  new  locality  in  1902  and  has  become  an  impor- 
tant producer.  It  lies  over  200  yards  west  and  in  the  strike  of  the 
Delamar  lode.  It  strikes  about  N.  10°  E. ,  is  approximately  vertical,  and 
is  wholly  within  the  old  metarhyolite,  the  so-called  Bully  Hill  quartz- 
ite.  The  ores  are  generally  like  those  of  the  Delamar  lode,  but  in  an 
old  shaft  near  the  summit  of  Bully  Hill  just  beneath  the  gossan  the 
pyritic  ore  is  wet  and  friable  like  that  already  noted  at  the  Spread 
Eagle.  In  both  cases  partial  solution  and  disintegration  take  place 
before  oxidation.  Secondary  chalcocite  and  carbonates  are  perhaps 
more  abundant  locally  in  the  Anchor  than  in  the  Delamar  lode,  but 
bornite  at  the  greatest  depth  (200  feet  from  the  surface,  July,  1903)  is 
of  less  importance. 
On  the  west  slope  of  Bully  Hill  some  ore  was  removed  from  the 
North  Star  and  Ydalpom,  and  works  extended  during  the  early  part 
of  the  year,  but  later  they  were  closed.  The  Recorder  on  the  north 
slope  of  the  hill  and  a  mine  farther  west  were  prospected  for  a  time 
by  the  Mount  Shasta  Gold  Mines  Corporation. 
The  Mount  Shasta  May  Blossom,  a  mile  northeast  of  Bully  Hill,  has 
been  active  in  a  prospect  near  the  contact  between  the  igneous  rocks 
and  the  shales.  An  air  compressor  is  reported  to  have  been  installed 
in  October. 
Copper  City  lode. — This  lode  was  worked  by  the  Bully  Hill  Com- 
pany in  1902,  but  was  closed  the  following  year,  and  the  mining 
activity  in  the  Copper  City  tract  was  confined  chiefly  to  the  Arps  and 
Tamarack  prospects.  The  interesting  occurrence  of  native  copper  in 
igneous  rocks   near  the  summit  of  Horse  Mountain  was  prospected 
