Hey all,Was looking for information on what is classified as...

Hey all,

Was looking for information on what is classified as good grades i.e potentially economical grades of minerals. Gold/ Uranium/ Zinc/ Copper/ nickle/ iron ore / Lead etc etc

I understand that infrastruture, depth of resource, environment, other minerals found, all play a big factor, but is there someone that can point me to a website or give me a rough guide ?

Just would like to be able to interpret drilling results when companies release them, without having to ring up my broker/ or consult fellow traders.

Cheers