328  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1904.        [bull.  260. 
Average  analysis  of  red  ore  from  lii<i  Spring,  Ala. 
Per  cent. 
Iron 30 
Lime   40 
Insoluble,  silica  and  alumina 20 
In  sec.  16,  T.  22  N.,  R.  6  W.,  the  general  trend  of  the  outcrop  agaii 
changes,  becoming  about  S.  10°  W.,  and  thus  it  continues  until  hiddei 
by  Cretaceous  ami  later  deposits  to  the  southwest  of  Schultz  Creel 
Between  the  limits  indicated  the  formation  passes  diagonally  across 
portions  of  the  following  sections:  Sees.  12,  13,  14,  23,  22,  27,  28,  33, 
and  32,  T.  20  N.,  R.  5  W.,  sees.  5,  6,  7,  and  18,  T.  21  N.,  R.  5  W. 
sees.  13,  24,  23,  26,  35,  and  34,  T.  21  N.,  R.  6  W. ;  sees.  3,  10,  9,  16,  IT, 
20,  19,  and  30,  T.  22  N.,  R.  6  W. ;  sec.  6,  T.  24  N.,  R,  7  AY.,  and  sees 
1,  2,  and  11,  T.  24  N.,  R.  8  W.     No  valuable  bodies  of  ore  seem  to  havj 
been  discovered   in   the  northern  part  of  this  strip.     Southwest  ol 
Roups  Creek,  for  nearly  3  miles,  or  to  where  the  Tuscaloosa-Bibl 
county  line  turns  westward  from  the  ridge,  two  seams  of  red  ore  havj 
been  reported  by  McCalley,0  but  the  layer  is  not  over  3  feet  thicl 
Still   farther  to  the  southwest   the  formation  is  deeply  buried   foi 
long  stretches  under  Cretaceous  and  Tertiary  deposits,  so  that  but 
little  prospecting  has  been  done  in  this  direction.     Such  prospect 
as  have  been  made  where  the  strata  outcrop  were  of  such  remote  datj 
at  the  time  of  this  survey  that  they  would  have  had  to  be  reopenec 
in  order  to  get  good  sections.     McCalley  ,&  however,  observed  sever; 
of  these  openings  when  they  were  fresh,  and  reports  the  following  sec-j 
tions  and  analyses: 
Section  of  cut  on   upper  red  ore  seam   in  NW.  |  of  SW.  J  of  sec.  24,  T.  21  A". 
r.  <;  w. 
Feet 
4.  Loam,  Tuscaloosa  formation. 
3.  Ore,  clay;  a  hard  limonite-looking  ore  of  red  brick-dust  color,  in  several 
solid  ledges  or  scams,  from  1  to  4  inches  each  in  thickness,  separated 
from  each  other  by  clayey  senilis. 
'2.  Rod  ore.  soft  or  well  leached,  with  interstratilied  clayey  streaks_, 
1.  Red  ore.  soft  or  well  leached,  good,  about 
Section  of  cut  on  lower  red  ore  scam  All'.  {  of  SW.  -}  of  sec.  2'h  T.  21  A7.,  R.  6 
Feet. 
3.  Loam,  Tuscaloosa  formation. 
2.  Red  ore,  soft  or  well  leached 2 
1.  Ore,  clay;  a  hard  limonite-looking  ore  with  clayey  partings 4 
"Op.  cit.,  p.  475.  ''Op.  cit.,  p.  50? 
