KAlSi3O8 + 8BrF5 KF + AlF3 + 3SiF4 + 4O2 + 8BrF3
Aluminum-potassium trisilicate react with bromine(V) fluoride to produce potassium fluoride, aluminum fluoride, silicon tetrafluoride, oxygen and bromine(III) fluoride. This reaction takes place at a temperature of 450°C.