Igneous Rocks are formed by crystallization from a liquid, or magma. They include two types. Magma is a mixture of liquid rock, crystals, and gas. Characterized by a wide range of chemical compositions, with high temperature, and properties of a liquid.
One of the earliest forerunners of modern ice cream was a recipe brought back to Italy from China by Marco Polo. The recipe was very like what we would call sherbet. From there, it is thought that Catherine de Medici brought the dessert to France when she married King Henry II in 1533.
Examination of the patent drawings show that both inventions were for edible ice cream cups with flat bottoms and tapered sides. (see Patent list below). In 1904 St. Louis, Missouri was the place to be. That year three major events plus the invention of the ice cream cone took place.