TL4 Without Iron

[Anthony]

Originally Posted by Sindri

Well how it behaves includes the cost. Does anyone know the best alternative for sparking though? That seems interesting.

There should be other rocks that spark, but the examples I found were talking about iron pyrite.

As a side note, I suspect any world iron-poor enough for this to be a problem is also iron-poor enough for iron-deficiency anemia to kill people.