220  CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,  1904.        [bull.  260. 
In  Buckingham  County,  Va.,  about  6  miles  northwest  of  Dillwyn,, 
a  copper  property  was  opened  up  last  winter  by  Mr.  B.  X.  Dawson. 
The  green  carbonate  that  prevailed  at  the  surface  gave  way  at  a  depth 
of  12  feet.  The  sulphide  ore  from  a  depth  of  45  feet  showed  a  3^-foott 
vein,  consisting  of  chalcopyrite  (copper  pyrite)  and  some  glance  ii^i 
a  matrix  of  silicified  schist  and  quartz.  The  vein  is  of  the  Gold  Hill  I 
type — i.  e.,  it  is  a  schist  vein — and  in  part  consists  of  white  pearly 
mica-  (sericite-)  schists,  impregnated  with  particles  of  chalcopyrite., 
with  a  wall  of  greenstone,  an  altered  igneous  rock.  The  property  hi 
4  miles  from  Alpha,  the  nearest  stop  on  a  branch  line  of  the  Chesa-: 
peake  and  Ohio  Railroad.  Further  notes  on  the  Virginia  district; 
Goldhill,  N.  C,  and  Ducktown  deposits  will  be  presented  in  a  special! 
bulletin  on  Appalachian  copper  deposits. 
our 
ll|'v 
h, 
di 
Tin 
mai 
