wakman]  PYRITE — PYROXENE.  641 
Pyrosmalite,  chemical  constitution  of Bull  125,  p  71, 105 
Pyroxene,  analysis  of,  from  Colorado,  Gunnison  County Bull  113,  p  112 
analysis  of,  from  Colorado,  Two  Buttes Bull  148,  p  182;  Bull  168,  p  165 
from  Connecticut,  New  Haven Bull  150,  p  269 
from  Montana,  Bozeman  Creek Bull  148,  p  137;  Bull  168,  p  111 
from  New  Jersey,  Montville Bull  60,  p  137 
from  New  York,  Moriah Bull  64,  p  43 
fr«  >m  ( >regon,  Mount  Thielsen Bull  14K,  p  230;  Bull  168,  p  220 
from  Wyoming,  Black  Hills Bull  148,  p  116 
chemical  constitution  of Bull  125,  pp  72,  85,  86-90,  93-94,  106 
composition  of Bull  L50,  pp  38  -39,  40-41 
from  Wyoming,  Electric  Peak,  in  diorite \nn  12.  i,  pp  603-605 
in  andesites  (rhombic) Bull  1,  pp  31-36 
in  diabasic  rocks  (rhombic) Bull  1,  p  35 
Pyroxene  magna  in  Nevada,  Eureka  district Mon  xx,  pp  255-258 
Pyroxene  rocks  free  from  feldspar  and  olivine Bull  28,  p  55 
Pyroxene-andesite,  analysis,  of,  from  California,  Lassen  Peak  region Bull  148, 
p  L95;  Bull  168,  p  L81 
analysis  of,  from  <  lolombia Pull  165,  p  171 
from  Colorado,  Pikes  Peak  district ..Bull  I48,pl63;  Pull  L68,pl45 
from  Nevada,  Eureka  district Mon  xx,  pp  264,  356 
Washoe  district Mod  xx,p282;  Pull  L7,p33 
from  New  Mexico,  ( Jolfax  County Bull  L68,  p  171 
from  Yellowstone  Park.  Agate  ( 'reek Bull  14S,  p  134; 
Pull  165,  p  171;   Bull  L68,  p  L08 
Dunraven  Peak Bull  14s,  ,,  L35;  Bull  168,  p  1<)<> 
Sepulchre  Mountain Ann  12,  i,  p  648; 
Mon  xxxii,  ii.  p  L35;   Bull  MS,  p  120;  Bull  168,  p  90 
from  Nevada,  Virginia  City,  description  of.  as  one  of  the  educational  series 
(olivine  hearing) Bull  150,  pp  228-231 
of  ( 'alitornia,   Lassen  Peak  quadrangle CtF  15,  pp  1-2 
of  Colorado,  Telluride  quadrangle GF  57,  p  7 
of  Nevada,  Eureka  district ..Mon  xx,  pp  239-242,  348-364 
of  New  Mexico,  Tew  an  .Mountains Bull  16,  pp  15-16 
of  Washington,  Mount  Rainier Ann  18,  n,  p  419 
of  Yellowstone  Park Monxxxn,  n,  pp  2!i4-2!».">.  301 
Sepulchre  Mountain Ann  12,  i,  pp  636-637 
thin  section  of,  from  Nevada,  Eureka  district,  showing  phenocrysts  of  black- 
bordered  hornblende  and  plagioclase  feldspars  (horn- 
blende-bearing)   Mon  xx,  pp  404-405 
from  Yellowstone  Park Mon  xxxn,  n,  pp  104-105 
Pyroxene-diorite,  analyses  of,  from  California.  Downieville  quadrangle Ann  17 
i,  p  638 
thin  section  of,  from  California,  Hay  Press  Valley Ann  17,  i,  pp  752-753 
Pyroxene-diorite-porphyry,  analysis  of,  from  Yellowstone  Park,  Crandall  vol- 
cano  Mon  xxxn,  ii,  p  261 
Pyroxene-mica-diorites,  analyses  of,  from  Yellowstone  Park,  Electric  Peak Bull 
148,  pll7;  Bull  168,  p  87 
Pyroxene-olivine,  analysis  of,  from  California Ann  17,  i,  p  735 
Pyroxene-porphyrite,  analysis  of,  from  Yellowstone  Park,  Electric  Peak... Bull  148, 
p  117;  Bull  168,  p  87 
Pyroxene-schist,  analysis  of,  from  Minnesota,  Odessa Bull  148, 
p  113;  Bull  168,  p  83 
Bull.  177—01 41 
