188  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1905. 
Section  on  slope  1,  near  Lowmoor,  Va. 
Ft.  In. 
White  quartzite 35 
Shale 2 
Sandstone 3 
Shale } 
Sandstone 3 
Shales  and  thin  sandstone 10 
Fossil  ore,  brown  and  porous 7 
Fossil  ore,  red  and  fairly  hard 14 
Ochery  clay G 
Shales 2 
The  brownish  fossil  ore  in  this  section  was  said  to  average  about  40  per  cent  and  tta 
red  ore  about  56  per  cent  without  washing.     Another  slope  gave  the  following  section: 
Section  on  slope  2,  near  Lowmoor,  Va. 
Ft.  In. 
White  quartzite 30 
Shales 2 
Red  fossil  ore 1      4 
Ochery  shales  and  thin  sandstones 1 
Shales  and  sandstones 2 
The  ore  is  hand  picked  at  the  mines  to  clear  it  of  slate,  and  then  run  down  an  inclim 
to  the  cars  below.  An  analysis  of  the  red  ore  from  these  mines,  by  H.  L.  Morris,  enema 
of  the  Lowmoor  Iron  Company,  is  as  follows: 
Analysis  of  red  ore  from  mines  near  Lowmoor,  Va. 
Metallic  iron  (Fe) 57. 00 
Manganese  (Mn) 15 
Silica  (Si02) 7. 12 
Aluminum  (AI2O3) 6. 31 
Lime  (CaO) 1. 46 
Magnesia  (MgO) 08 
Phosphorus  anhydride  (P2O5) 1. 54 
Ca  rbon  dioxide  (C02) 1. 23 
Water  (H20) 1. 18 
From  this  analysis  it  can  be  seen  that  the  ore  so  far  handled  is  a  thoroughly  leachei 
ore— a  "soft  ore,"  to  use  the  Alabama  term.  Its  lime  carbonate  has  been  almost  entire!; 
removed  and  in  consequence  its  iron  percentage  is  relatively  high.  Farther  under  cove 
the  ore  will  become  hard  and  probably  fall  to  35  per  cent  or  less  of  metallic  iron. 
The  Clinton  ore  has  been  mined  mi  the  river  gap  at  Iron  Gate,  but  the  beds  are  ver 
thin  and  irregular  and  the  unleached  ("hard")  ore  is  of  very  low  grade.  The  followin; 
analyses  have  been  furnished  by  the  Longdale  Iron  Company: 
Analyses  of  Clinton  ore  from  Iron  Gate,  Va. 
Metallic  iron 46. 5      46. 0 
Insoluble ■ 19. 90    20. 24 
Phosphorus 49        .48 
The  beds  examined  here  are  rarely  over  8  to  12  inches  thick,  and  as  practically  all  tb 
soft  or  leached  ore  has  been  used,  the  deposits  can  hardly  be  regarded  as  of  commercia 
value. 
