When Eli Whitney invented the cotton gin, slavery in the United States was in a large decline, do to the inherent unprofitable nature of the cotton/plantation/slave economy in â¦ the southern states.
Jasper is a cryptocrystalline variety of the mineral Quartz (SiO 2). Quartz is the most abundant single mineral on earth. It makes up about 12% of the earth's crust, occurring in a wide variety of igneous, metamorphic and sedimentary rocks.
Geometric patterns are also common in jasper stones. If a stone is an agate, it will be translucent as is chalcedony, but an agate will have patterns. Most commonly, agates have bands, and are appropriately called banded agate. Sometimes the bands are also translucent, sometimes some are opaque.