Assertion: cordierite | /r/MadeOf | 46.6-53.0% sio2
Facets:
value: analytically
type: MANNER
value: essentially
type: DEGREE
Source sentences:
text: In particu-lar, the inventors have used proportions of clay, talc, silica, aluminum hydroxides and alumina so as to produce cordierites analytically consisting essentially of 46.6-53.0% SiO2, 33.0-~1.0% A12O3, and 11.5-16.5%