wabman.]  GABBP.O GALENA.  333 
Gabbro,  thin  section  of,  from  Minnesot  i,  sec.  12,  T.  115  N.,  K.39  W.  (altered) Bull 
157,  pp  146-147 
thin  section  of,  from  New  York,  Adirondacks Ann  19,  in,  pp  402-403 
from  New  York,  Lincoln  Pond Ann  19,  in,  pp  406-407 
from  Sierra  Nevada Ann  17,  l,  pp  760-761 
(  poikilitic) Ann  17,  i,  pp  762-763 
from  Yellowstone  Park Mon  xxxii,  n,  pp  250-251 
Gabbro  family  of  rocks,  scope  and  characteristics  of Ann  17,  i,  p  733 
<  rabbro-diorite,  analysis  of,  from  Maryland,  Ilchester Ann  15, 
p  673;  Bull  148,  p  85;  Bull  168,  p  44 
analysis  of,  from  Maryland,  near  Baltimore Bull  28,  pp  37,  39 
from  Maryland  near  Pikesville Bull  28,  p  37;  Bull  150,  p  369 
from  Minnesota,  Minnesota  Falls Bull  148,  p  113;  Bull  168,  p  83 
from  Wisconsin,  Lower  Quinnesec  Falls Bull  62,  p  89; 
Bull  148,  p  101;  Bull  168,  p  71 
of  ( Jalifornia,  Bidwell  Bar  quadrangle GF  43,  p  3 
Jackson  quadrangle GF  11,  p  4 
Placerville  quadrangle GF  3,  p  2 
Sacramento  quadrangle GF  5,  p  2 
Smartsville  quadrangle. GF  18,  p  4 
of  Colorado,  Telluride  quadrangle GF  57,  pp  7,  8, 9 
i  »f  I  Delaware Bull  59,  pp  15-19 
of  Maryland,  near  Baltimore Bull  28,  pp  25-32 
near  Baltimore, genetic  relations  of  hypersthene-gabbro  and Bull  28, 
pp  32-49 
thin  section  of,  from  Maryland,  Liberty  road Bull  28,  pp  64-65 
from  Maryland,  Mount  Bope,  from  transitional  zone  between  hyper- 
sthene-gabbro and Bull  28,  pp  60-61 
from  Minnesota.  Minnesota  Falls Bull  157,  pp  144-145 
<  rabbro-gneiss,  analysis  of,  from  Minnesota,  Yellow  Medicine  Comity. .  Bull  150,  p  372 
( rabbro-granite  from  Delaware Bull  59,  pp  19-21 
from  Minnesota,  Minnesota  Falls,  description  of,  as  one  of  the  educational 
series,  hornblendic  (gabbro-diorite) Bull  150,  pp  369-372 
Gabbro-porphyry,  analysis  of,  from  Colorado,  near  Mount  SnefTels Bull  168, 
pl63;  GF57,p7 
analysis  of,  from  Yellowstone  Park,  Absaroka  Range Mon  xxxn, 
ii,  p,  260;  Bull  148,  p  L22;   Bull  168,  pp  92,97 
of  Yellowstone  Park  and  vicinity Mon  xxxn,  n,  pp  242-251 
Gabbro-pyroxenite  of  California,  Jackson  quadrangle GF  11,  p  4 
Gabbro- schist,  thin  section  of,  from  Minnesota,  southwestern  (hypersthene- 
free)  Bull  157,  pp  140-141 ,  142-143,  148-149 
thin  section  of,  from  Minnesota,  Wabasha  Creek  area  (altered  hypersthene- 
bearing) Bull  157,  pp  148-149 
( rabbro-schists,  gneisses,  and  associated  rocks  of  Minnesota,  southwestern Bull  157 
( iad<  ilinite,  analysis  of,  from  Texas,  Llano  County Bull  64,  p  40 
chemical  constitution  of Bull  125,  pp  70,  71, 105 
« uviirrence  and  statistics  of .  .MR  1888,  pp  582-583;  MR  1889-90,  p  448;  MR  1891, 
p  540;  MR  1892,  p  781;  MR  1893,  p  682;  Ann  16,  iv,  p  605 
<  Jadsden  purchase,  account  of Bull  171,  pp  26-27 
Gadsden  quadrangle,  Alabama,  geology  of , GF  35 
Gahnite,  analysis  of,  from  Maryland,  Montgomery  County Bull  9,  p  9 
analysis  of,  from  Massachusetts,  Rowe Bull  126,  p  82 
from  North  Carolina,  Mitchell  County Bull  74,  p  33 
Gale  sands  of  Washington GF  54,  p  5 
Galena,  alteration  products  of,  analysis  of,  from  Colorado,  Leadville  ..Mon  xn,  p  606 
( See  Lead  ore. ) 
