GEOLOGIC    FOLIOS.  11 
List  of  geologic  folios,  showing  mineral  resources  described — Continued. 
No. 
Name  of  folio. 
State. 
Area 
in 
sq.  m. 
Author. 
Mineral  products  described 
as  occurring  in  area  of 
folio. 
68 
Walsenburg 
Colo 
944 
Hills,  R.  C 
Coal,  stone,  clay,  under- 
ground water. 
69 
Huntington 
W.  Va.-Ohio.. 
938 
Campbell,  M.  R 
Coal. 
70 
Washington 
D.C.-Va.- 
Md. 
405 
Darton, N.H.; 
Keith,  A. 
Gold,  iron,  clay,  stone, 
road  materials,  green- 
sand  marls,  underground 
water. 
71 
Spanish  Peaks 
Colo 
950 
Hills,  R.  C 
Coal,  stone,  gold,  silver, 
underground  water. 
7? 
W.  Va 
938 
Campbell,  M.  R 
Diller,  J.  S 
Coal,  salt,  oil,  gas,  iron. 
Coal,  gold,  stone. 
Coal,  stone,  clay. 
73 
Oreg 
871 
74 
Coalgate 
Ind.T 
980 
Taff,  J.  A. 
75 
Maynardville 
Tenn 
9(33 
Keith,  A 
zinc,  lime,  road  mate- 
rials, clay. 
76 
Tex 
1,030 
Hill,  It.  T.;  Vaughan, 
T.  W. 
Oil,  stone,  lime,  clay,  ce- 
ment rock,  underground 
water. 
77 
Raleigh 
W.  Va 
944 
Campbell,  M.  R 
Coal. 
78 
Rome 
Ga.-Ala 
980 
Hayes,  C.  W 
Bauxite,  iron,  slate,  lime. 
79 
A  toka 
Ind.T 
980 
Taff,  J.  A 
Coal,  stone,  clay. 
80 
Norfolk 
Va.-N.C 
1,913 
Darton,  N.  II 
Sand,    clay,    underground 
water. 
81 
Chicago 
Ill.-Ind 
892 
Alden,  W.C 
Stone,  clay,  molding  sand, 
water. 
8? 
Mason  town-Union- 
town. 
Pa..   .. 
458 
Campbell,  M.  R 
Coal,  oil,  clay,  stone,  glass 
sand,  iron. 
83 
New  York  City 
N.  Y.-N.J  ... 
900 
Merrill,  F.J.  II.;  Hol- 
lick,     A.;     Darton, 
N.   11.;    Willis,   B.; 
Salisbury,    R.    D.; 
Dodge,  R.  E.;  Pres- 
sey,  II.  A. 
Marble,  granite,  road  mate- 
rial, clay,  iron,  water. 
84 
Ind 
938 
Fuller,   M.   L.;   Ash- 
ley, Cx.  11. 
Coal,  gas,  clay,  stone,  iron- 
85 
S.  Dak.-Nebr. 
871 
Darton,  N.  II..   . 
stone,    gypsum,   lime,   vol- 
canic ash,  underground 
water. 
80 
Wash 
820 
Smith,  G.  O 
Building  stone,  road  metal, 
ground  water,  under- 
ground water. 
87 
Camp  Clarke 
Scotts  Bluff. .. 
Nebr 
892 
Darton,  N.  II 
Volcanic  ash. 
88 
do 
892 
878 
do 
Do 
89 
Port  Orford 
Oreg 
Diller,  J.  S 
Coal,  gold,  platinum. 
90 
Tenn 
963 
Keith,  A 
Mica,  gold,  brick  clay,  iron 
91 
Wyo. 
885 
Smith,  W.S.T 
ore. 
Iron     ore,     copper,      lime, 
building  stone,  gypsum, 
fire  clay. 
92 
Gaines 
Pa.-N.  Y 
223 
Fuller,  M.  L.;  Alden, 
W.C. 
Oil,  coal. 
93 
Elkland-Tioga 
Brownsville-C  o  n- 
nellsville. 
Pa  . 
445 
.  .do 
Flagstone,  lime,  gravels. 
94 
...do 
457 
Campbell,  M.  R 
Coal,  natural  gas. 
95 
Columbia 
Tenn 
909 
Hayes,  C.  W.;     Ul- 
rica, E.  O. 
Phosphate,  iron. 
90 
Olivet 
S.  Dak 
Todd,  J.  E 
Granite,     lime,    quartzite, 
underground  wan  r. 
97 
do 
871 
do 
Quartzite,     chalk,     cement 
rock,  underground  water. 
98 
Tishomingo 
Ind.  T 
986 
Taff,  J   A 
Granite,  lime  building  stone, 
clay. 
99 
Mitchell 
S.  Dak 
863 
Todd,  J.  E 
Underground  water,  sand- 
stone, chalkstone. 
100 
Alexandria 
do 
863 
Todd,    ./.    E.;    Hall, 
C.  M. 
Underground  water,  quartz- 
ite, sandstone,  chalkstone. 
