warman.]  FAULTS FELDSPAR.  321 
Feldspar,  analysis  of,  from  Massachusetts,  Greylock  Mountain    (from   mica- 
schist)  Mon  xxm, 
p  187;  Bull  55,  p  79;  Bull  148,  p  78;  Bull  168,  p  34 
analysis  of,  from  Massachusetts,  Hampshire  County  (siliceous) Bull  126,  p  11 
from  Massachusetts,  Hoosac  Mountain  (from  feldspathic  schist) .  .Mon  xxm, 
p  60;  Bull  55,  p  79;  Bull  148,  p  78; 
Bull    150,  p  325;    Bull  168,  p  34 
fr<  >m  Michigan,  Penokee-Gogebic  range Mon  xix,  p  352; 
Bull  64,  p  47;  Bull  148,  pp  103, 104;  Bull  168,  p  73 
from  Minnesota,  Pigeon  Point Bull  109,  pp  34,  52; 
Bull  148,  p  107;  Bull  168,  p  77 
various  localities  (from  gabbros) Bull  78,  p  122; 
Bull  148,  p  112;  Bull  168,  p  82 
from  Nevada,  Mount  Rose Mon  in,  p  154 
from  New  Mexico,  Mount  Taylor  region,  near  Grant's  (from  basalt) Bull 
148,  p  185;  Bull  168,  p  170 
from  New  York,  Bedford  ( commercial) Ann  17,  in,  p  846 
fr<  »m  Oregon,  Mount  Thielsen . .  .Bull  9,  p  15;  Bull  148,  p  230;  Bull  168,  p  220 
lion  i  Pennsylvania,  Brandy  wine  (commercial) Ann  17,  in,  p  846 
from  Texas,  Fayette  County  (commercial) Ann  17,  in,  p  846 
from  Wisconsin,  Ashland  County  (from  gabbro) Bull  60,  p  149; 
Bull  148,  p  105;  Bull  168,  p  75 
Green  Lake  County  (from  metarhyolite) Bull  150,  p  166 
Penokee-<  rogebic  range Mon  xix, 
1»  352;  Bull  64,  p  48;  Bull  148,  p  104;  Bull  168,  p  74 
£r<  »ui  Yellowstone  Park,  Obsidian  Cliff Ann  7,  pp  269-270 
biotite  and  quartz  yielded  by,  on  decomposition  in  granite Ann  10,  i,  p  355 
chemical  constitution  of Bull  125,  pp  28-32 
composition  of Bull  150,  pp  44^6 
of  the  more  important  varieties  of Ann  21,  vi  cont,  p  594 
determinations  of,  by  Szabo's  method Mon  in,  pp  405-408 
enlargement  of  fragments  of,  in  certain  Keweenawan  sandstones. Bull  8,  pp  44-47 
secondary,  in  sandstones Ann  5,  pp  237-240;  Bull  8,  p  44 
epidote  an  alteration  product  of  Mon  xn,  pp  341 ,  357; 
Bull  28,  pp  31-32;  Bull  59,  p  35;  Bull  62,  pp  108,  211 
from  Minnesota,  southwestern  (in  gneiss) Bull  157,  pp  51-53 
from  Yellowstone  Park,  Electric  Peak  (in  porphyrite  and  in  diorite).  .Ann  12,  i, 
pp  592,  601-603 
in  rocks  of  Pacific  slope Mon  xin,  pp  82-84 
production  of,  statistics  of MR  1883-84, 
pp  933-934;  MR  1885,  p  523;  MR  1886,  p  701;  MR  1887, 
PP  5,  6,  8-9;  MR  1888,  pp  6,  8, 10-11;  MR  1889-90,  p  6; 
MR  1891,  pp  474,  500;  Ann  17,  in  cont,  pp  839-840,  845- 
846;  Ann  18,  v  cont,  pp  1365-1367;  Ann  19,  vi  cont,  p 
657;  Ann  20,  vi  cont,  p  745;  Ann  21,  vi  cont,  pp 593-595 
thin  section  of,  from  Delaware,  Iron  Hill,  showing  inclusions  within.  .Bull  59,  p  30 
from  Michigan,  Crystal  Falls  district  (sheaf-like  aggregates) Mon  xxxvi, 
pp  282-283 
Upper  Ouinnesec  Falls  (crvstal  faulted  in  crushed  greenstone) .  .Bull  62, 
pl05 
from  Nevada,  Eureka  district  (from  rhyolite) Mon  xx,  pp  396-397 
Eureka  district  (from  pyroxene-andesite) Mon  xx,  pp  396-397 
(plagioclase  from  hornblende-mica-andesite) Mon  xx, 
pp  400-401,  402-403 
Washoe  district  (from  hornblende-andesite) . . .  „ , .  /Mon  in,  pp  150-151 
Bull.  177—01 21 
