Talc is also derived from the recrystallization of magnesian carbonates.
The obvious place to look was the talc shelf or smoke-guard of the lamp.
Talc is the most frequently used article of this description.
And as for this waxy stuff spread over the talc, it's unique.
As for the talc mask and the black moustache, that is not much to help us, it is true.
Agalite and ...