OK, I want to add smelter reactions for all the ore-bearing stone types, in part to get rid of them, and in part to provide a little more ore on some maps. I went through all the stones and created reactions for each one that has an ore as either a large cluster or a vein, with a 1% chance of a bar for veins and a 3% chance for large clusters (then I rounded for silver, as a 1% chance for galena is a .5% chance for silver, etc). That left some stones with as high as 5% chance for iron (1% for limonite, 1% for hematite, 3% for magnatite), which seems a bit high...
So, at this point (since you can't have a %chance for a partial bar like melting, unfortunately), I probably need to increase the number of stones required... What is a reasonable number? I mean, 5% iron is probably not all that far off, but most of that would actually be in mine-able ore, I would think, so perhaps as many as 5 per each reaction?
Anyway, I'm open to suggestion.
Also, I'm making reactions to smelt ore blocks (often available from caravans). Blocks seem to weigh 80% of stones, but then, so do most pieces of furniture, and I don't want to mess with that... perhaps 50% chance of the normal stone? A Galena block, for instance, would have a 50% chance of lead and a 25% chance of silver. Anybody have any thoughts on if that should be higher or lower?