308        CONTRIBUTIONS   TO  ECONOMIC   GEOLOGY,  1906,  PART   1. 
The  kaolin  contains 
Feldspar Trace) 
Quarl  / 1 .  570  Sand 1.  570 
Mica Trace] 
Ferric  oxide .  745 
Clay  substance 97.685 
11)11.000 
At  the  pit  of  the  American  Clay  Company,  11  miles  southeast  of 
\)y\  Branch,  the  day  is  in  one  massive  hod  L8  feel  thick.  Tt  is  soft 
drab  to  cream  color  and  yellow,  jointed,  and  very  free  from  "gril  "  or 
mechanical  impurities,  h  is  overlain  by  20  to  30  feel  of  va],  yellow, 
and  gray  sand,  which  near  the  pit  increases  to  a  maximum  of  so  feet. 
The  clay  is  shipped  without  washing  and  is  used  entirely  as  a  filler  in 
the  manufacture  of  paper.  When  dried  it  whitens  in  color,  and  when 
pulverized  has  the  feel  and  color  of  low-grade  wheat  (lour. 
The  Georgia  Kaolin  Company  operates  a  mine  2  miles  east  of  Dry 
Branch.  The  bed  is  is  feet  thick.  The  upper  5  or  6  feet  of  the  hod 
is  hard  and  contains  manganese  stains  .and  small  curious  fingers  of 
sand.  The  lower  part  of  the  bed  is  soft,  plastic,  gray  or  cream 
colored,  and  remarkably  five  from  grit.  A  rational  analysis  shows 
no  quartz  -and  and  only  a  \rery  small  percentage  of  mica.  The  clay 
is  suitable  for  pottery  and  paper  uses.  The  following  is  an  analysis 
of  t  he  purer  clay  found  here: 
Analysis  of  kaolin  from  pit  of  th  Georgia  Kaolin  Company. 
\  E.  Everharl .  analyst.] 
M   isture  al   LOO   C L.22 
I              ignition L3.46 
Silica 11.70 
Alumina 38.  II 
ic  oxide 63 
Lime 20 
Magnesia 09 
lium  oxide .09 
-in in  oxide .35 
Titanium  dioxide L.  37 
Sulphur None 
Phosphorus  pentoxide None 
100. 58 
The  composition  of  the  kaolin  is— 
Feldspar 0.6801 
Quartz NonelSand 5.  L89 
Mica L509J 
Ferric  oxide 479 
('lay  substance 94.332 
100. 000 
