Transactions of the INDIAN CERAMIC SOCIETY Vol. 39 1980
Study of Sonapahar Sillimanite
by X-ray and IR
G. c. BHATTACHARYYA AND A. A. NAQVI
Pages : 198-202
DOI : 10.1080/0371750X.1980.10840748
Abstract
Investigation by X-ray diffraction and infra-red carried
out on samples of massive sillimanite and quartz-free
quartz-sillimanite schist from Sonapahar area as such, as
well as on tiny single crystals, picked up therefrom, under
a microscope indicated the presence of mullite beside four,
forms of sillimanite. Rutile and biotite were also found to
occur in the schist. Densities of three forms of sillimanite
were found to be 3.22, 3.19, 3.26 gmfcc but density of
mullite was 3.06 gmfcc.
