of Boston and its Vicinity. 



175 



Subspecies lL—:Chlorite Earth, 



Earthy Chlorite, Cleaveland, p. 355. Chlorite Eartli, JamemUf vol. i. p 

 548. Scaly Chlorite, J^ifcin, p. 218. 



External Characters. 



L 



Its colour is leek green. 



Its lustre' is faintly glimmering. 



It is opaque. 



It is amorphous. 



It has an unctuous feel. . 



It exhales a strong argillaceous odour when breathed up 



It has a chalky taste. 



It adheres strongly to the tongue. 



Its soil is mountain green. 



The streak is mountain green. 



It is very soft. 



The fracture is earthy. 



It is easily frangible. 



The fragments are indeterminately angular. 



/ 



Geological Situation and Localities. 

 It occurs massive iu Quartz, at Brookline and Brighton. 



