31 2  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1900,   PART    I. 
A  nuli/sis  of  kaolin  from  Hephzibah   Ga. 
[E.  Everhart,  analysl . ) 
Moisture  at  100°  C 0.55 
Loss  on  ignition 12.  42 
Silica 14. 99 
Alumina 38.  59 
Ferric  oxide 2.  II 
Lime Trace. 
Magnesia 05 
Soda 24 
Potash. 11 
mas 
Titanium  dioxide. 
•       Phosphorus  pentoxid< 
Sulphur 
1.0! 
L3 
.02 
'he  kaolin  contains 
Feldspar. .  I 
Quartz. . . .     Sand 
Mica  | 
Ferric  oxide 
<  l.iv  substance 
LOO.  25 
3.61 
L.90 
94.  19 
1(10.00 
PERRY,   HOUSTON    <<>l   VI  V 
A  fine  deposit  of  kaolin  is  exposed  in  Upper  Cretaceous  strata  on 
Bay  Creek,  2  miles  northwest  of  Perry,  at  various  points  along  the 
base  of  a  ridge.  A  shaft  lias  been  sunk  into  the  kaolin  L5  feel,  and 
it  is  reported  that  the  bed  has  been  penetrated  to  a  depth  <A'  20  feel 
by  auger  boring.  Within  an  area  of  500  acres  many  prospect  holes 
and  wells  have  keen  put  down,  most  of  them  encountering  kaolin. 
The  clay  evidently  occurs  in  greal  quantity,  bul  is  likely  to  vary  in 
thickness.  'The  overburden  consists  of  very  fine,  variegated,  mica- 
ceous sands,  having  a  maximum  thickness  of  80  feet.  The  top  of  the 
bed,  near  it-  contact  with  the  overlying  ferriferous  sands,  is  stained 
\c(\  and  yellow  by  iron  oxide.  The  clay  is  chalky  white  when  dvy 
and  contains  only  a  very  small  percentage  of  sand.  It  is  probably 
besl  adapted  for  use  in  the  manufacture  of  white  ware.     An  analysis 
follow  >: 
Analysis  of  kaolin  from  Perry,  Ga. 
[E.  Everhart,  an  < 
Moisture  at  100°  C 1.47 
Loss  on  ignition L3.58 
Silica 44.86 
Alumina 37.34 
Ferric  oxide 
56 
Lime Trace. 
Magnesia 
Soda 
Potash 
Titanium  dioxide. 
.05 
.01 
.22 
L.66 
99.78 
