I've lost matches,metal match,magnifying glass,zippo,and sparklite tool.There is an abundance of flint,chert,quartz.I pull out my knife to create a spark and nothing.Why not?I recently learned that stainless steel will not spark natural flints,and that carbon blades must have a rockwell of 60.My Swedish carbon Moras will spark,as will horseshoes (even on the horse,don't ask).<br><br>