MISCELLANEOUS NONMETALLIFEROUS MINERAL 
PRODUCTS. 
Several nonmetalliferous products have been discussed in the pres- 
ent bulletin in conjunction with closely associated and economically 
more important metalliferous ores. Under the head of lead and zinc, 
for example, will be found a discussion of the fluorspar deposits of 
Illinois and Kentucky (p. 205), while a newly discovered pyrite deposit 
in Georgia is described in connection with the gold deposits of the 
same region (p. 62). 
PUBLICATIONS ON MICA, GRAPHITE, ABRASIVE MATERIALS, ETC. 
The following list includes a number of papers, published by the 
United States Geological Survey or by members of its staff, dealing 
with various nonmetalliferous mineral products not treated separately 
in the present bulletin : 
Brewer, W. M. Occurrences of graphite in the South. In Seventeenth Ann. 
Rept. U. S. Geol. Survey, Pt. Ill, pp. 1008-1010. 1896. 
Chatard, T. M. Corundum and emery. In Mineral Resources U. S. for 1883-84, 
pp. 714-720. 1885. 
Davis, H. J. Pyrites. In Mineral Resources U. S. for 1885, pp. 501-517. 1886. 
Eckel, E. C. The emery deposits of Westchester County, N. Y. In Mineral 
Industry, vol. 9, pp. 15-17. 1901. 
Emmons, S. F. Fluorspar deposits of southern Illinois. In Trans. Am. Inst. 
Min. Eng., vol. 21, pp. 81-53. 1893. 
Fuller, M. L. Crushed quartz and its source. In Stone, vol. 18, pp. 1-4. 1898. 
The occurrence and uses of mica. In Stone, vol. 19, pp. 530-532. 1899. 
Hidden, W. E. The discovery of emeralds and hiddenite in North Carolina. 
In Mineral Resources U. S. for 1882, pp. 500-503. 1883. 
Holmes, J. A. Corundum deposits of the Southern Appalachian region. In 
Seventeenth Ann. Rept. U. S. Geol. Survey, Pt. Ill, pp. 935-943. 1896. 
— Mica deposits in the United States. In Twentieth Ann. Rept. U. S. 
Geol. Survey, Pt. VI, pp. 691-707. 1899. 
Jenks, C. N. The manufacture and use of corundum. In Seventeenth Ann. 
Rept. U. S. Geol. Survey, Pt. Ill, pp. 943-947. 1896. 
Kemp, J. F. Notes on the occurrence of asbestos in Lamoille and Orleans coun- 
ties, Vt. In Mineral Resources U. S. for 1900, pp. 862-866. 1901. 
Martin, W. Pyrites. In Mineral Resources U. S. for 1883-84, pp. 877-905. 
1886. 
Parker. E. W. Abrasive materials. In Nineteenth Ann. Rept. U. S. Geol. 
Survey, Pt. VI, pp. 515-533. 1898. 
Peale, A. C. Natural mineral waters of the United States. In Fourteenth 
Ann. Rept. U. S. Geol. Survey, Pt. II, pp. 49-88. 1894. 
439 
