Sinterklaas
Chieftain
In vanilla Civ 3 I just got the following message: "This source of iron has been exhausted". Now I've suddenly lost the only iron source on my island... 
How often does this happen? And will the iron source "respawn" elsewhere or is it gone for good?
I'm asking because I'm playing a map that I made with Civ3Edit and while making the map I deliberately made resources scarce so that players have to fight or trade to get the resources they need (everyone having plenty makes for uninteresting gameplay). But if these scarce resources are going to disappear forever it will severely spoil the game, especially because I made certain resources (like uranium and aluminium) so scarce that it might result in all players not being able to build nukes, Aegis cruisers, tanks, airplanes, etcetera.

How often does this happen? And will the iron source "respawn" elsewhere or is it gone for good?
I'm asking because I'm playing a map that I made with Civ3Edit and while making the map I deliberately made resources scarce so that players have to fight or trade to get the resources they need (everyone having plenty makes for uninteresting gameplay). But if these scarce resources are going to disappear forever it will severely spoil the game, especially because I made certain resources (like uranium and aluminium) so scarce that it might result in all players not being able to build nukes, Aegis cruisers, tanks, airplanes, etcetera.
