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.
Jasper is usually considered as Chalcedony; sometimes, however, scientists put it in a group by itself within the quartz group because of its grainy structure. The name jasper is derived from the Greek and means spotted stone.The finely grained, dense jasper contains up to 20 percent foreign materials, which determine its colour, streak, and appearance.he name jasper is derived from the Greek and means spotted stone. The finely grained, dense jasper contains up to 20 percent foreign materials, which determine its colour, streak, and appearance.