228 
INDEX. 
Page. 
Bonnifield region, map (PI. IV) showing... 206 
placers of 214-221 
production of 205 
Bonnifield and Kantishna regions, paper 
on 205-226 
Boothby Creek, mining on 37 
Bornite, occurrence of 124 
Boston claims, operations on 55 
Boulder Creek, coal on 109 
conditions on 175 
gold on 193 
Bourbon Creek, mining on 141 
Brady, E. R., aid by 38 
Brooks, A. H., administrative report by. . . 11-18 
cited on coal resources of Alaska 40 
cited on Healy Creek coal 223-224 
cited on Kenai beds 222 
cited on Ketchikan mining district 47 
cited on Kougarok region 164 
cited on lodes and contacts, association 
of 156 
cited on placer deposits 131-132 
cited on railways needed in Alaska 46 
paper by, on Circle precinct 187-204 
en Kougarok region 164-181 
on mining industry in Alaska in 
1906 19-39 
quoted on lode production in 1905 27 
work of 126, 127, 164, 187 
Brown- Alaska Company, operations of 62 
Buffalo Creek, stream measurements on 185 
Building stones, occurrence and character 
of 73-78 
Bunny Creek, mining on 163 
Burls Creek, oil seepages on 92-95 
Buster Creek, mining on 141 
C. 
Calcite veins, occurrence and character of.. 131 
California Creek, gold on 179 
Camp Creek, copper on 28 
mining on or near 148,151,155 
Candle Creek, gold mining on 35 
(ant well River, character of 226 
coal near 226 
Canyon Creek, mining on 119, 122-123, 1 53 
Cape Lisburne, coal beds at, ages of 44 
Cape Mountain, tin mining at 28-29 
tin ores at, age of 25 
Cape Yaktag, oil seepages at 92, 93, 95 
Carboniferous rocks, coal beds in 42 
Caribou Creek, coal on 109 
mining on 218-219 
stibnite on 30 
Carroll Inlet, marble on 77 
Casadepaga River, mining on 152-154 
Cascade ditch, description of 169-170 
Cement materials, occurrence of 80 
Chalcopyrite, occurrence of 124-125 
Chandlar River, placer mining in basin of . . 38 
Chapman, E. PI., aid by 37 
Charley Creek, bismuth on 138 
Chatham Creek, stibnite on 30 
Chatanika River, basin of, ditch projected 
in 37 
tributaries of, placer mining on 36-37 
Page, 
Chiak Bay, marble at 7 J 
Chicago Creek, gold mining on 3 
Chichagof Island, geology of 59-6 
gold deposits and gold mining on 50, 60-6 { 
gypsum on 7 
Chickaloon Creek, coal on 109-11 
developments on, location of, map show- 
ing 11 
surveys near ] 
Chicken Creek, mining on < 
Chilkat Creek, oil seepages and wells at 92, 93, 95! I 
Chistochina placer district, mineralization 
in, age of * ; 
Cholmondeley Sound, galena deposits on. . . 
Circle, accessibility of l) 
freight rates to l! 
Circle precinct, paper on 187-21 
Cleary Creek, mining on 
stibnite on 
Cleveland Peninsula, gold mining on I 
Coal, analyses of 
character of 44-45, 201-2 
deposits of 80-81, 201-202, 221-2 
distribution of 107-108, 109-1 
map (PI. II) showing 
geologic age of 41- 
markets for 44, 
production of 21,45- 
reports on, list of 
See also Lignite. 
Coal, anthracite, distribution of 109,110-1 
relation of, to intrusive diabase, section 
showing ] 
Coal, bituminous, distribution of 109, 111-] 
Coal Creek, coal on 109, 112, '. 
gold mining on 202-1 
Coal fields of Alaska, area of 40- 
distribution of 40 J 
geology of 41 I 
paper on 40" 
reports on , list of 
Coal-bearing rocks, distribution of, map 
(PI. II) showing.., 
Coarse Gold Creek, mining on and near 1 
178, 
Cobblestone River, graphite near 139- 
Coffee Creek, mining on 171, 
Collier, A. J ., cited on cassiterite lodes 
cited on coal of Washington Creek 
cited on Kougarok region 
cited on lodes and contacts, association 
of 
cited on Nome series 
cited on terrace gravels in Kougarok re- 
gion . 
cited on tin deposits of York region 
work of 126 
Colville River, basin of, coal beds in, age of. 
Controller Bay, gas at 
geology at 8! 
location of 
oil wells at, descriptions of 9' 
drilling of, difficulties of 100 
location of 89, 9 
map showing ' 
