BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 28, pp. 463-500 July 21, 1917 



JAN 26 1911 

 K . 



AVEATHERUSTG OF ALLAFITE ^ 



BY THOMAS L. WATSON 



(Presented before the Society Decemher 28, 1916) 



CONTENTS 



Page 



fntroduction 464 



Mode of occurrence of allanite 465 



Distribution of allanite in the eastern United States 467 



New England 467 



General observations 467 



Maine 467 



Massachusetts 468 



New Hampshire and A^ermont 469 



Connecticut and Rhode Island 469 



Middle Atlantic States 469 



General observations 469 



New York 470 



New Jersey 471 



Pennsylvania 471 



Analyses of allanite from the New England and Middle Atlantic States 473 



South Atlantic States 475 



General observations 475 



Maryland 475 



Virginia 475 



North Carolina 477 



South Carolina 477 



' Analyses of allanite from Virginia and North Carolina 478 



Gulf States 479 



General observations 479 



Texas 480 



Composition of allanite 480 



General observations 480 



Roanoke County, Virginia .« 481 



Amherst County, Virginia 481 



Albany, Wyoming 481 



Llano County, Texas 482 



Garto, Arendal, Norway 482 



Manuscript received by the Secretary of the Society .January 13, 1917. 



XXXV— Bull. Geol. Soc. Am., Vol. 28, 1916 (463) 



