[Kelvin M]

I found all the other information I need but I cannot find:

-Physical Properites (odour, lustre, taste, hardness, malleability, ductility, melting & boiling point, crystal form, solubility, viscosity, density)

-Who discovered it & when it was first historically used

-Where it occurs in Nature (if applicable) IF NOT, where does it come from?

-How it is manufacture or isolated from nature.