134 
INDEX. 
S. Page. 
Sands, age of 31 
occurrence of 24 
Schistose granite. See Gneiss. 
Schists, igneous, descriptions of 14-17 
See also Amphibole; Quart z-sericite 
schist; Gneiss. 
Schists, sedimentary, description of 17-19 
See also Quartz schist; Quartz-sericite 
schist; Quartz-biotite schist; 
Sericite schist; Limestone. 
Schlegelmilch mine, developments at. 101,103,111 
geology at 102 
location of 101 
minerals in 62-65 
ores of 102-103 
vein of, section of, figure showing 102 
Secondary enrichment, description of . . . 45,65-67 
Sedimentary rocks, age of 31 
descriptions of 23-24 
metamorphism of 14 
See also Monroe beds; Sand; Clay: Al- 
luvium. 
Sericite, description of 63 
occurrence of 62 
Sericite schist, description of 18-19 
Silver, occurrence of 68,89, 112 
Sloan, Earle, analyses by 19 
on age of rocks 31 
on diabase 31 
on sand 24 
Small & J ohnson, development by 108, 111 
South Carolina, geologic work in 10 
Sphalerite, occurrence of 62,64 
Spodumene, gems in 118 
occurrence of 38, 118 
value of 55 
Standard mines, description of 126 
geology at 126 
Stanley County, N. C, gold in 110 
Stockton, Commodore, development by. 87,90,94 
Stockton mine. See Colossus mine. 
Stratigraphy, character of 26-27 
Strike, direction of 28 
Stringer leads, occurrence of 123 
Structure, character of 26, 27-29 
relations of, to drainage 13-14 
Sullivan, G. C, analysis by 116 
Swedish Iron Mining Co., development by . . 114 
T. 
Tanyard pit, gold placer in 74, 90 
Tellurium, occurrence of 64 
Terry place, vein on 109 
Tetradymite, occurrence of 63 
Tetrahedrite, occurrence of 63 
Thickety Mountain, rocks ol 18 
Thies, Adolf, management o,' 75-76, 77 
on lead 113 
Thies, E. A., management of 77 
Thompson mine, developments at 103, 110 
geology at 103-104 
history of 103 
location of 103 
ores of 61, 104 
rocks in 18 
Tin, demand for 32-34, 56 
Page. 
Tin, deposits of 31-57 
deposits of, age of 44 
economic importance of 54-57 
future production of 55-56 
location of 45-46 
size of 55 
value of 54-55 
extraction of 53-54,57 
cost of 57 
marketing of, cost of 57 
mines of, descriptions of 46-54 
mining of, cost of 56-57 
history of 32-34 
methods of 52 
occurrence of 34 
ores of 41-42 
placers of 44-45 
price of 55 
production of 54, 56 
costs of 56-57 
secondary enrichment of 45 
Tin and gold, deposits of, in Southern Appa- 
lachians 9-118 
report on, scope of 9-10 
Tin-bearing rocks, distribution of 34-35 
distribution of, map showing 35 
view of 42 
See also Pegmatite. 
Tin belt, geology of 34-45 
location of 34 
Titanium, occurrence of 39 
Topography, account of 10-14 
zones of 10-11 
Tourmaline veins, gold in 40, 69-70, 73 
occurrence of 40, 62 
U. 
Union County, S. C, gold mines in 110 
V. 
Veins, description of 123-125 
Victoria, gold mines of 124 
Virginia, tin deposits of 44 
Volcanic rocks, age of 31 
deposition and alteration of 14 
occurrence of 23 
W. 
Wallis, G. R.. prospect on land of 108 
Wallis mine, diabase at 71 
Warren County, Ga., gold in 110 
Weed, W. EL, on secondary enrichment 66 
Well, artesian, location of 28 
West mine, description of 104 
Whitaker Mountain, rocks of 18 
Wilkes County, Ga., gold in 110 
Wilson mines, description of 107-108 
See also Big Wilson; Little Wilson. 
Wolf Creek, iron near 114-115 
Wolf Creek mine. See Ross & Carroll mine. 
Wolframite, occurrence of 39 
Y. 
Yahoola Creek, rocks at 120, 122 
York County, amphibolite in 14,15 
gold mines in 110 
monazite in 118 
Z. 
Zinc, occurrence of 114 
