ANALYSES OF ALLANITE 477 



in addition to the common rock-forming silicate minerals;, are fluorite, 

 garnet, tourmaline, beryl, helvite, zircon, colnmbite, microlite, apatite, 

 and monazite. Except fluorite, tourmaline, and zircon, analyses have 

 been made of each of these minerals, including allanite.^^ 



About 3 miles southeast of Marksville, Page County,^^ black vitreous 

 allanite occurs in pegmatite cutting quartz-bearing hypersthene syenite 

 and is associated with titaniferous magnetite. The mineral weathers ex- 

 teriorly to the usual reddish brown crust coated by a thin outer light- 

 colored layer of the weathered mineral. 



North Carolina.^'^ — Many of the numerous pegmatite dikes of western 

 North Carolina have been long and favorably known for the variety of 

 rare minerals which they contain. There are known at present more than 

 40 minerals from the pegmatites of this State. 



In western North Carolina allanite has been noted as a constituent in 

 the pegmatites of many counties, especially Alexander, Buncombe, Hen- 

 derson, Iredell, Madison, and Mitchell, probably the largest number of 

 localities for any single State. In most of these the mineral occurs very 

 sparingly as a minor constituent, but in several it is found in quantity. 

 Black or brownish black slender crystals up to 6 and 12 inches long have 

 been found in the pegmatite at Balsam Gap, Buncombe County, and near 

 Bethany Church, in Iredell County, allanite is found in massive form and 

 in large quantity like that in Amherst County, Virginia. Small crystals 

 of zircon are imbedded in the allanite of Iredell County. When found 

 above water level the allanite exhibits exteriorly alteration from weather- 

 ing to a reddish brown crust. 



South Carolina. — To the writer^s knowledge the only known occurrence 



50 J. A. Cabell: Chemical News, vol. xxx. 1874, p. 141. 

 W. T. Page : Chemical News. vol. 38, 1878, p. 04 ; ibid., vol. 40, 1882, p. ir.5, 

 F. P. Dunnington : Am. Chem. Jour., vol. 4, 1882, p. 138. 

 George A. Koenig : Proc. Acad. Philadelphia, 1882, p. 103. 

 W. M. Fontaine : Am. Jour. Sci., vol. 25, 1883. pp. 330-339. 



C. C. Memminger : Am. Chem. Jour., vol. 6, 1885, p. 172. 

 W. G. Brown : Am. Chem. Jour., vol. 6, 1885, p. 172. 



Thomas L. Watson : Bull. Am. Inst. Mng. Engrs., 1016, pp. 1240-1241. 

 21 E. S. Larsen : Personal communication, December, 1916. 



°2 F. H. Genth and W. C. Kerr : The Minerals and Mineral Localities of North Caro- 

 lina, Raleigh, 1885, pp. 50-51. 



J. H. Pratt : Economic Paper No. 6, North Carolina Geol. Survey, 1902, pp. 40-58. 



D. B. Sterrett : U. S. Geol. Survey, Bull. 315, 1906. pp. 400-422 ; ibid., Bull. 430, 

 1910, pp. 593-638. 



See other publications of the North Carolina, Geol. Survey, especially the Economic 

 Papers, and the annual volumes of Mineral Resources of the United States published by 

 the U. S. Geol. Survey. 



W. E. Hidden : Am. Jour. Sci., vol. 22, 1881, p. 21 ; ibid., vol. 24, 1882* p. 372. 



J. W. Mallet: Chem. News. vol. 44, 1881, p. 215. 



F. H, Genth: Am. Philos. Soc, 1882, Aug. 18; ibid,, 1887, March 18. 



