Very intereting and helpful. Zorzor or "Zrozor" which could be a local spelling or a mistake. look at this link-
http://www.vikingsword.com/vb/showth...hlight=bayonet
Zorzor is on the border of Guinea, French west Africa so I do not think there would be any Turkish influence as I suggest in the link. Unless the Turks raided that far. Very intersting to see anyway. Perhaps based on a British bayonet? I think known as a hookie.
I would imaging the spears are from the same area, they look great to me. How long are they? What is the white material stuff on the scabbard? Any Idea when your great grandfather was there? You could give your age so we could make a guess?
I see you have given lengths. Is that length just the steel blades?