This mod makes the lava turn stone into ore over time. When lava comes in contact with stone it turns red hot. After a specific time it turns into ore.
lava_ore_gen.blacklist is a table where you can blacklist node names.
lava_ore_gen.blacklist["default:stone_with_iron"] = true
Fixed interval of when stone is changed into ore.
lava_ore_gen.interval = 3600
Random chance of when to change stone into ore.
lava_ore_gen.chance = 86400
Make ores random instead of being based on how rare they are.
lava_ore_gen.random = false