INDEX. 
499 
Page. 
I  McCartney,    Wis.,    section    of    Platteville- 
Galena  beds  near 229 
McCoy  Creek,  gold  diggings  on 79 
McCreath,  A.  S.,  analysis  by 177 
MacDonald,  D.  F.,  work  of 31 
Mclntyre,  Ga.,  clay  deposits  near 309-310 
McKinney  mine,  N.  C,  description  of 409 
McQueen,  C.  B.,  farm  of,  clay  on 341 
farm  of,  clays  from,  analyses  of 340 
Malthacite,  analysis  of 276 
Magne-Silica  Company,  quarry  of 440 
Magnesia,  Survey  publications  on 259 
work  on  deposits  containing 24 
Magnesite,  work  on 24, 247-258 
Magnetite,  deposits  of,  in  Berks  and  Leba- 
non counties,  Pa.,  paper  on. . .  185-189 
occurrence  of 174-175, 185-189, 197, 208 
origin  of 179-181 
Maguire    &    O' Heron-   quarry,    granite    of, 
composition  of 358 
Maine,  feldspar  of,  availability  of 388-389 
manufacture  of 387-388 
mining  of 389-393 
occurrence  of 393 
uses  of 386-387 
feldspar  and  quartz  deposits  of 383-393 
granites  of,  work  on 356-357 
mineral  prospect  in,  note  on 118-119 
pegmatites  of,  character  of 385-386 
composition  of 383, 385 
distribution  of 383 
geologic  occurrence  of 383-384 
origin  and  age  of 385 
uses  of 386-387 
quartz  of,  manufacture  of 388 
mining  of 389-393 
uses  of 386-387 
Maine  Feldspar  Company,  mills  of 387, 391 
quarry  of 391 
Mancos  shale,  analyses  of 297, 300 
Mandle,  I.,  &  Co,,  Georgia,  clay  beds  worked 
by 309 
Manganese,  occurrence  of 466, 473 
Manganese  ores,  Survey  publications  on. .  213-214 
work  on 22-23, 130-212 
Mansfield  sandstone,  occurrence  and  char- 
acter of 365-366, 368 
use  of,  for  glass  sand 365, 368 
Market  Lake,  gold  diggings  near 79 
Martin,  Lawrence,  and  Phalen,  W.  C,  paper 
by 344-354 
Massachusetts,  granites  of,  work  on 357-359 
MassilIon,Ohio,  glass  sand  at 367, 373-374 
analysis  of 376 
Massillon  Sand  and  Stone  Company,  quarry 
of 374 
Massillon     sandstone,    use    of,    for    glass 
sand 367, 373-374 
Matches,  use  of  phosphorus  for 482-483 
Maumee,  Ohio,  glass  works  at 371 
Mechanicsville,  Pa. ,  clay  near 338, 341 ,  342 
Meissner, ,  analysis  by 177 
Mercer  clays,  occurrence  of 337, 
339, 345, 348-349, 350-351 
Mercer  shales,  occurrence  of 349-350 
Merom  sandstone,  occurrence  of 366 
Page. 
Mesa  Blanca  Capulin,  N.  Mex.,  geologic  sec- 
tion in 262 
Mesaba  mine,  Ala.,  description  of 165-167 
ores  of,  analyses  of 177, 178 
Metz,  Henry,  acknowledgments  to 93 
Mica,  deposits  of,  investigations  of 24-25, 
400-422, 423-425 
deposits  of,  North  Carolina,  paper  on.  420-422 
North  Carolina,  publications  on,  list 
of 401 
Wyoming,  paper  on 423-425 
prospects  of,  figure  showing 192 
mining  and  treatment  of 417-418 
origin  of 418-422 
uses  of 400 
Mica,  graphite,  etc.,  papers  on 400-428 
Survey  publications  on,  list  of 429 
Michael,  L   G.,  analyses  by 228, 229 
Miller  clays.    See  Kittanning  clays. 
Millport,  Pa.,  mineral-paint  ore  near 43.5-436 
Milton,  Mass.,  granite  of,  composition  of . . .      358 
Milton    English    mine,    N.    C,    description 
of 407-409 
Mineral  paints,  materials  available  for,  work 
on 25 
papers  on 430-437 
Mineral-paint  ores  of  the  Lehigh  Gap,  Pa., 
paper  on 435-437 
Mineral  resources  of  U.  S.,  annual  report  on, 
form  and  character  of 13 
Minnekahta  limestone,  analyses  of ...  235, 242 
occurrence  of 235, 241-242 
Minnesota,  copper  mines  in,  ores  of 101 
Minnie  claim,  Wyo.,  description  of 425 
Missouri,  clay  resources  in,  paper  on 315-321 
glass  sand  in 380-381 
marketing  of 363 
Missouri  River,  glass  sand  on 379 
Mitchell,  L.  J.,  mine  of,  clay  at 347 
Monroe  formation,  use  of,  for  glass  sand . .  367, 370 
Montana,  gold  and  silver  deposits  in,  work 
on 31-55 
work  in,  on  metalliferous  ores 17 
Monterey   formation,   diatomaceous  earth 
in 439-441, 444-445 
Monticello  lode,  Colo.,  operations,  ores,  and 
general  features  at 27-28 
Montpelier,  Idaho,  phosphate  beds  near.'.  457,461 
phosphate  beds  near,  section  of,  figure 
showing 459 
section  near,  figure  showing 458 
Montpelier  Creek,  Idaho,  phosphates  on. .  458-459 
Morrell,  T.  T.,  analyses  by 347, 348, 351 
Morrison  shale,  analysis  of 236 
occurrence  of 236 
Moss  brick  works,  De  Soto,  Ala.,  section  at . .      291 
Mount  Apatite,  Me.,  feldspar  at 391-392 
Mount  Ararat,  Me.,  feldspar  at 391 
Mount  Holly  Brick  and  Clay  Company,  Pa., 
operations  of , 330-332 
Mount  Holly  Springs,  Pa.,  clay  beds  mined 
near 322-334 
phosphorus  ore  at,  discovery  and  de- 
velopment of 474-476 
geology  of 476-477 
origin  of 477-478 
