VT '10, Born & Raised in the 804. Freeman Rebels, Keydets, Army Black Knights, NY Giants, NY Rangers, and ATL Braves. It's dolomitic limestone I'm pretty sure, so you might be able to contact some commercial supplier and buy some that looks close enough. It won't be real hokie stone but it should be close.
But what exactly is salt poisoning, and who is at risk? Salt poisoning, also known as hypernatremia, is when a body takes in dangerously high levels of sodium, according to the National Capital Poison Center. Too much sodium in the bloodstream can damage brain cells, and lead to seizures, coma or even death. Fluid can build up in the lungs, causing trouble breathing.
Salt is a mineral composed of sodium and chlorine. Neither can exist alone in natural form. Together, they form the chemical compound that is sodium chloride. To geologists, salt is known as halite. Salt is a crystal of the isometric system, meaning it is usually cubic and perfectly symmetrical. Pure salt crystals are colorless, although a pile of them will appear to be white. Impurities in the crystals may cause salt to be various shades of yellow, red, blue or purple.