INDEX. 
495 
Page. 
Franklin  Mountains,  Tex.,  description  of  ..       146 
geologic  map  of 147 
granite  of,  analysis  of 147 
tin  in 147-148 
ores  of 148-149 
rocks  of 146-148 
tin  of 17, 19. 146-149 
Fredonia,  Kans. ,  glass  making  at 460 
glass  making  at  and  near 470-471 
Freeland  mine,  Colo. ,  ores  in 39 
Frisco,  Utah,  postponement  of  work  at 19 
Fruitland  district,  coal  of 256-257 
coal  of,  analysis  of 258 
sections  of 256-257 
Fuel -testing  plant.     See  Coal-testing  plant- 
Fuller,  M.  L. ,  on  clays  of  Cape  Cod 432-441 
work  of 432 
Fuller's  earth,  bibliography  of 448 
G. 
Gabbard,  John,  ores  discovered  by 68 
Gadsden,  Ala.,  iron  mines  at  and  near 178 
Gale,  A.  II.,  work  of 159-160 
Gale,  II.  S.,  on  Hahns  Peak  gold  field 28-34 
work  of 17, 204 
Gale,  II.  S.,  and  Fenneman,  N.  M.,  on  Yam- 
pa  coal  field 226-239 
Gallina  district,  N.  Mex.,  coal  of 249-250 
coal  of,  sections  of 250 
Gallup  district,  N.  Mex.,  coal  of 254-255 
coal  of,  analyses  of 258 
sections  of 254-255 
See  also  Durango-Gallup  coal  field. 
Gardiner  clay,  character  of 434 
Garnet  in  black  sands,  occurrence  of 152-156 
Garrey,  G.  II.,  work  of 18,35,55 
Garrey,  G.  II.,  and  Spurr,  J.  E.,  on  Idaho 
Springs  mining  district,  Colo. . .  35-40 
Gas,  investigation  of 23 
occurrence  of 314, 361 
use  of,  in  glass  making 460-461 
Gas  and  petroleum,  bibliography  of 367-368 
papers  on 357-366 
Gaylesville,  Ala.;  iron  mines  at  and  near. .  178-179 
General  Thomas  mine,  Nev.,  description  of.  57-58 
Geologic  folios,  list  of 8-13 
price  of 8 
Geological  Survey,  U.  S.,  publications  of. . .     7-14 
Georgetown   quadrangle,   Colo.,  investiga- 
tion of 35 
Georgia,  copper  in 107 
copper  in,  production  of 93, 107 
work  in 21 
Germany,  copper  in,  production  of 94 
Gilmore,  Tenn.,  clay  at 424-425 
clay  at,  analysis  of 425 
Girty,  G.  H.,  fossils  determined  by 167 
Glass,  composition  of 453 
production  of 459 
Glass  making,  economic  considerations  in  459-4(0 
materials  for,  bibliography  of 452 
papers  on 452-475 
value  of 459 
Glass  sand,  analyses  of 454-457 
bibliography  of 452 
Page. 
Glass  sand,  investigation  of 24 
production  of 452 
quarrying  of,  economic  considerations  in      472 
requirements  of 453-454 
Glen  Campbell  field,  Pa.,  coal  of 277-278 
See  also  Punxsutawney  and  Glen  Camp- 
bell fields. 
Glendive,  Mont.,  lignite  near,  section  of  ...      328 
Globe  district,  Ariz.,  description  of 100-101 
Gold  and  silver,  bibliography  of 91-92 
papers  on 25-91 
yield  of,  from  copper  mines 94-95 
See  also  Colorado;  Idaho-Montana; 
Nevada-California;  NewMexico; 
Utah;  Bear  Creek;  Hahns  Peak; 
Idaho  Springs;  Annie  Laurie 
mine. 
Gold  Belt,  Cal.,  ore  deposits  at 73 
Gold  Bug  mine,  Colo.,  history  of 25 
workings  of 26-27 
Gold  Crater,  Nev.,  ore  deposits  at 69-70 
Gold  Crest  Mining  Co.,  mines  of 63 
Gold  Hill  district,  N.  C,  copper  in 115-116 
Gold  in  black  sands,  occurrence  of 152-156 
Gold  Mountain  district,  Utah.    See  Annie 
Laurie  mine. 
Gold  Mountain  vein,  Idaho,  description  of. .       137 
Goldfield  district,  Nev.,  work  in 17-18 
Goldfield  -  Midway  -  Bullfrog    Mining    Co., 
mines  of 59-60 
Goldfield  mine,  Mont.,  description  of 49 
Goldreed  mine,  Nev.,  ores  of 67 
Good  Hope  mine,  Colo.,  minerals  in 26 
production  of 25 
Goodwin,  F.  W .,  work  of 129 
Gordon,  C.  II.,  work  of 19, 74, 84 
Gordon  and  Nineveh  oil  sands,  Pa.,  identi- 
fication of 362-366 
Grainger  formation,  shales  of 375 
shales  of,  analysis  of 375 
Grampian  district,  Pa.,  coal  of 274 
Grand  Canyon,  Ariz.,  copper  mine  near. . . .       100 
Grand  J  unction,  Tenn.,  clay  at 426 
Graneros  shale,  bentonite  in 446 
Granite,  gold  in 55-56 
investigation  of 24 
occurrence  of 44, 78, 132 
tin  in 147-148 
Granite   Fall,  Wash.,  limestone  and  shale 
near 380 
analysis  of 380 
Graphite,  bibliography  of 484 
deposits  of,  description  of 480-483 
investigation  of 24 
origin  of 482 
Grass  Creek,  Utah,  coal  on 287 
Grasty,  J.  S.,  work  of 21,183-184 
Graton,  L.  C,  work  of 19 
Graton,  L.  C,  and  Lindgren,  W.,  on  mineral 
deposits  of  New  Mexico 74-86 
Grays  Summit,  Mo.,  glass  sand  at 467 
glass  sand  at,  analysis  of 456-457 
Great  Basin  region,  work  in 18 
See  also  California;  Nevada- 
Great  Britain,  copper  in,  production  of 94 
Great  Cacapon,  W.  Va.,  sand  quarries  at.  .      475 
Great  Northwestern  mine,  Mont.,  descrip- 
tion of 49 
