barman  i  DIKES DIORITE.  295 
Diopside,  occurrence  and  statistics  of MR  1882,  p  496; 
MR  1883-84,  pp  769,  781;  MR  1885,  p  443;  MR  1886, 
p  604;  MR  1887,  pp  556,  557;  MR  1888,  pp  584,  585;  MR 
1889-90,  pp  446, 447;  MR  1891,  p  540;  MR  1892,  p  781;  MR 
1893,  pp  681,  682;  Ann  16,  iv,  pp  604,  605;  Ann  17,  m 
cont,  p  924;  Ann  18,  iv  cont,  p  1217;  Ann  19,  vi  cont, 
p  513;  Ann  20,  vi  cont,  p  599;  Ann  21,  vi  cont,  p  461 
Diopside,  segirine-augite,  and  plagioclase,  aqueous  deposit  of,  from  Massachu- 
setts, Greenfield,  thin  section  of Mon  xxix,  pp  430-431 
Diopside-diabase  of  Massachusetts,  western Mon  xxix,  pp  443-444 
Dioptase,  chemical  constitution  of Bull  125,  p  71 
Diorite,  analysis  of,  from  Alaska,  Douglas  and  Kadiak  islands,  and  Silver  Bow 
Basin Bull  168,  p  227 
analysis  of,  from  Alaska,  Karluk , .  Ann  18,  in,  p  42 
from  Alaska,  Sitka,  and  Turnagain  Arm  (pyroclastic) Ann  18,  in,  p  45 
Unalaska  Island Ann  20,  in,  p  490;  Bull  148,  p  232;  Bull  168,  p  226 
various  localities Bull  148,  p  233 
from  Austria,  Silesia Ann  20,  in,  p  490 
from  California,  Amador  County Bull  148,  p  215;  Bull  168,  p  201 
Bidwell  Bar,  Big  Trees,  and  Smartsville  quadrangles Ann  17,  i, 
pp  702,  731 
Butte  County Bull  148,  p  204;  Bull  168,  p  190 
Knoxville Mon  xm,  p  101;  Bull  148,  p  222;  Bull  168,  p  211 
Shasta  County Bull  148,  p  191;  Bull  168,  p  177 
S<  »nora Ann  20,  in,  p  490 
Tuolumne  County Bull  148,  p  218;  Bull  168,  p  204 
fr< »ni  ( '< >lorado,  Elk  Mountains Bull  150, 
p  242;  Bull  148,  p  177;  Bull  168,  p  159 
La  Plata  Mountains Ann  20, 
in,  p  490;  Bull  148,  p  181;  Bull  168,  p  161;  GF  60,  p  6 
Telluride  quadrangle  (impregnated  diorite) Ann  18,  in,  p  807 
West  Elk  Mountains  (porphyritic  diorite) Ann  14,  n,  p  227 
from  Germany,  Baden Bull  28,  p  30 
from  Idaho,  Seven  Devils Ann  20,  in,  p  251 
from  Maryland,  Cecil  County Bull  168,  p  45 
from  Massachusetts,  Leverett Mon  xxix,  p  345 
from  Michigan,  Crystal  Falls  district Mon  xxxvi,  p  231 
from  Montana,  Castle  Mountain  district Bull  139, 
pp  135, 136;  Bull  148,  p  151;  Bull  168,  p  130 
Crazy  Mountains Bull  148,  p  144;  Bull  168,  p  122 
Little  Belt  Mountains Bull  148,  p  148;  Bull  168,  p  127 
Neihart Ann  20,  in,  pp  490,  581 
Red  Mountain Bull  168,  p  118 
from  Nevada,  Comstock  lode  (metamorphic,  porphyritic) Mon  in,  p  152 
Grass  Valley Ann  17,  n,  pp  42-43 
Mount  Davidson Mon  in,  p  152 
from  New  York,  near  Peekskill  ( inclusion  in) Bull  60,  p  158 
from  North  Carolina,  Mitchell  County Bull  1 68,  p  52 
from  Philippine  Islands Ann  21 ,  in,  p  506 
from  Vermont,  Mount  Ascutney Bull  148,  p  69;  Bull  168,  p  25 
Mount  Ascutney  (basic  segregation  in) Bull  168,  p  26 
from  Wisconsin,  Wisconsin  River Bull  62,  p  113 
from  Yellowstone  Park,  Absaroka  Range Bull  168,  p  96 
Electric  Peak Ann  12,  i,  p  631 ;  Ann  20,  in, 
p  490;  Mon  xxxn,  n,  p  116;  Bull  66,  p  30;  Bull  150,  p  244 
