A rail welding crucible and cap with burner-ignited reaction starter mix comprising a cap, an igniter core, a crucible, the cap comprising a cap body, a first face, a second face, a core-receiving hole, a burner-receiving indent, a core housing and a plurality of vents, the igniter core being a mixture, the mixture comprising a quantity of iron oxide, a quantity of aluminum and a quantity of bonding material, the crucible comprising a crucible body, a reaction cavity, a tap hole and a seal, the first face being oppositely positioned to the second face about the cap body, the core-receiving hole traversing from the first face through the cap body to the second face, wherein the rail welding crucible and cap with burner-ignited reaction starter mix further comprises: the core-receiving hole being a conical hole by gradually tapering from the first face to the second face; the igniter core being mounted within the core-receiving hole; the reaction cavity traversing into the crucible body; the second face being mounted across an opening of the reaction cavity; the burner-receiving indent traversing into the cap body from the first face; the core housing being connected to an indent base of the burner-receiving indent; the core housing extending from the indent base to the first face; the core-receiving hole traversing through the core housing; the plurality of vents traversing from the burner-receiving indent through the cap body to the second face; the plurality of vents being radially distributed around the core-receiving hole; the tap hole traversing from the reaction cavity through a crucible base of the crucible body; the tap hole being plugged by the seal; characterized in that the crucible comprises a plurality of handles and a plurality of mounting tabs, the plurality of handles being laterally connected to the crucible body; the plurality of handles being radially offset from each other around the crucible body; the plurality of handles being adjacently positioned to the opening; the plurality of mounting tabs being laterally connected to the crucible body; the plurality of mounting tabs being radially offset from each other around the crucible body; and the plurality of mounting tabs being adjacently positioned to the crucible base. the core-receiving hole being a conical hole by gradually tapering from the first face to the second face; the igniter core being mounted within the core-receiving hole; the reaction cavity traversing into the crucible body; the second face being mounted across an opening of the reaction cavity; the burner-receiving indent traversing into the cap body from the first face; the core housing being connected to an indent base of the burner-receiving indent; the core housing extending from the indent base to the first face; the core-receiving hole traversing through the core housing; the plurality of vents traversing from the burner-receiving indent through the cap body to the second face; the plurality of vents being radially distributed around the core-receiving hole; the tap hole traversing from the reaction cavity through a crucible base of the crucible body; the tap hole being plugged by the seal; characterized in that the crucible comprises a plurality of handles and a plurality of mounting tabs, the plurality of handles being laterally connected to the crucible body; the plurality of handles being radially offset from each other around the crucible body; the plurality of handles being adjacently positioned to the opening; the plurality of mounting tabs being laterally connected to the crucible body; the plurality of mounting tabs being radially offset from each other around the crucible body; and the plurality of mounting tabs being adjacently positioned to the crucible base.