IRON  ORES  IN  THE  BROOKWOOD  QUADRANGLE,  ALABAMA. 
By  Ernest  F.  Burchard. 
INTRODUCTION. 
In  view  of  the  present  active  interest   in  the  development  of  the 
•on  ores  of  Alabama  there  is  presented  herewith  an  outline  of  the 
istribution  of  the  ore-bearing  formations  and   a   short  account  of 
le  characters  of  the  ores  and  their  distribution   and   relationships 
i  the  Brookwood  quadrangle.     This  quadrangle  is  west  of  the  Bes- 
mer   quadrangle,   in   which    mining   of   the   Clinton    red   hematite 
re  has  assumed  extensive  proportions.     The  Brookwood  quadrangle 
i  prominent  contributor  to  the  supply  of  brown  ore,  or  limonite, 
i  the  production  of  which  Alabama  ranks  first  among  the  States. 
he    Alabama    Geological    Survey    has    already    investigated    this 
'gion,    and    has    published    its    results    in    the    following    papers: 
eport  on  the  Cahaba  coal  held,  with  map,  by  Joseph  Squire,  IcSDO; 
he  iron  ores  of  Alabama,  by  William  B.  Phillips,  first  edition,  1890, 
cond  edition,  1808;   Report  on  the  Valley  regions  of  Alabama,  Part 
[,  b}'  Henry  McCalley,  1897;  Report  on  the   Warrior  coal   basin. 
ith    map,   by    Henry   McCalley,    1900;  and   Index   to   the   mineral 
^sources  of  Alabama,  by  Eugene  A.  Smith  and   Henry   McCalley, 
)04.     The  Federal  survey  of  this  area  is  not  finished,  but  the  facts 
ported  below  either  were  gathered  in  the  field  during  the  autumn 
If  1904  by  Mr.  Charles  Butts,  Mr.  H.  S.  (bile,  and  the  writer,  or  haw 
en  carefully  selected  from  the  reports  of  the  Alabama  Geological 
itrvey.     In  the  present  survey  it  has  been  the  policy  rather  to  work 
long   lines    which   have    received    attention    from    members   of   the 
labania  Geological  Survey  than  to  duplicate  much  of  their  detailed 
ork.     For  this  reason  the  records  of  sections  published  by  the  State 
urvey  have  been   freely  drawn   on   after  verification   of  locations 
ad  character  of  the  beds  from  notes  of  the  past  season. 
GENERAL  DISTRIBUTION   AND   AGE  OF  FORMATIONS. 
A  brief  outline  of  the  stratigraphy  of  the  Coal  Measures  in  the 
Drthwest  half  of  the  quadrangle  has  been  given  by  Mi-.  Charles 
Bull.  200—05  M 21  821 
