Sillimanite, kyanite, andalusite, and dumortierite

Author:	Petar, Alice Virginia,
Year:	1930
Document Type:	MAIN
SUDOC:	C 22.11:6255
Series:	Information circular / Bureau of Mines ;
Report Number:	6255
Subjects:	Cyanite
	Sillimanite
	Boron compounds
	Aluminum silicates
	Andalusite
Link:	https://hdl.handle.net/2027/mdp.39015095078914