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 Geological Description: Jasper is a microcrystalline variety of Quartz, a silicon dioxide mineral with a hardness of 6.5 to 7. The name Jasper is derived from a Greek word meaning âspotted stoneâ. It is found all over the world, including large deposits in India, Russia, Brazil, France, Germany and the USA.