Alf and Al2O3 will produce no cloudiness in glasses containing no alkaline earth. ZnO and PbO and Al2O3 do not participate in the clouding effect of fluorides but support opalescence. X-ray work has shown that KF as well as NaF and CaF2 can produce opacification.
Origin
Unknown
Journal Title
Gekt 1954 11 & 12 399-403, 437-440
Sector
Primary Papers
Class
PP 843