question_answer 2)

Find out how many minerals are used to make a light bulb?

Answer:

Minerals used to make parts of a light bulb which require a mineral are  

Part of Bulb	Material Used	Mineral from Which Obtained
Filament	Tungsten	Scheelite, Wolframite, ferberite or hubnerite (Metallic oxides of Tungsten)
Bulb	Glass	Silica (Silicon dioxide)
Connecting wires	Copper	Chalcolite (Cuprous Sulphide)
Metallic part of body	Aluminium	Bauxite (Aluminium oxide)