Galena, Illinois called Galena "La Pointe" and early Americans adopted this name as "The Point". Early documentation officially records the name as "Fever River", an early name for the Galena River, though it does not appear that this name was commonly used. George Davenport, a retired colonel in the United States Army, successfully shipped Galena's first boatload of lead ore down the Mississippi River in 1816. Three years later, Jesse W. Shull built a trading post. The Thomas H. January family, who arrived in 1821 from Maysville, Kentucky, are considered the first permanent American settlers. The next year, the US Department of
Mineral Rock forming minerals – typically silicates or occasionally carbonates – have a specific gravity of 2.5–3.5. High specific gravity is a diagnostic property of a mineral. A variation in chemistry (and consequently, mineral class) correlates to a change in specific gravity. Among more common minerals, oxides and sulfides tend to have a higher specific gravity as they include elements with higher atomic mass. A generalization is that minerals with metallic or adamantine lustre tend to have higher specific gravities than those having a non-metallic to dull lustre. For example, hematite, FeO, has a specific gravity of 5.26 while galena, PbS,