Dirt in the wound
It seems that putting soil in a wound — sterilized soil, to be clear — helps it clot and heal faster, thanks to the silicates.
The study […] found that the presence of soil in wounds helps activate a blood protein, known as coagulation Factor XII. Once activated, the protein kicks off a rapid chain reaction that helps leads to the formation of a plug, sealing the wound and limiting blood loss.
Potential use: “In extreme cases and in remote areas without access to healthcare and wound sealing products.”