I am glad to see that while I was typing this thread took a turn for the better, it was getting out of hand. There has been considerable time spent here debating whether this is a scam or something similar. May I suggest to all that further discussion on that point is counterproductive, enough has been said.
Kularm,
I would ask you to understand that many of us have had scam solicitations on the forum and by the PM feature. Gold does funny things to people. Accurate or not, your post contained many of the hallmarks and key phrases that those scams typically include. If you are doing business in West Africa trading gold I would imagine you have had others warn of the same thing or you have run into it personally.
As to the help you are looking for. Hoke is one of the best for learning refining in layman's terms but says little on mining ores. Ammen's is good as well and gets into ores a bit more.
There are some here with experience in ores (I have little), but a better description of what you are purchasing is needed for any productive help. Is it all metallic dust and nuggets? Since you have had assays, what are the contaminates that need to be removed?