Copper, the oldest metal known to human beings, is found in ore deposits throughout the world, with the largest production occurring in Chile and the United States. Humans discovered copper about 10,000 years ago. It was first combined with tin to form the alloy bronze in about 3,000 B.C.Know More
In modern times, copper is used for everything from electrical wiring to car parts. It is a durable, yet malleable metal, which makes it useful in a wide range of applications. It is also an excellent conductor.
Chile produces about 20 percent of the world's copper, while the United States produces about 9 percent. Australia, Switzerland, the United Kingdom, Mexico and Poland are the other large copper producers.
One of the richest copper sources in the world is in Michigan. Long before white people settled in the area, Native Americans mined copper along Lake Superior and northern Michigan's Keweenaw Peninsula. The Native Americans used copper to make tools. Archaeological excavations have uncovered hammering stones used to work the copper the Indians mined.
While the Native Americans eventually abandoned their mines, American prospectors had excellent luck picking up where they left off in the same mines. For decades, copper mining was an integral part of Michigan's economy.Learn more about Geology
Pegmatite is found in all parts of the world, and they are most abundant in very old rocks. Some are found in large intrusive igneous rocks, while others are distributed in the rocks surrounding the intrusive igneous rocks.Full Answer >
Geodes are mostly found in deserts, volcanic ash beds and areas with limestone throughout the world. In the United States, common geode sites include Arizona, California, Iowa, Nevada and Utah. The most abundant geode sites in California are Riverside and Imperial counties.Full Answer >
Jasper derives from quartz; the mineral is found throughout the world and is not commonly treated or enhanced when mined. Jasper is a beautiful mineral with captivating color patterns and formations. Although it can be solid in color, jasper is typically spotted, striped or ringed. Each jasper stone possesses a unique pattern or color scheme, making it one of the most unique gemstones.Full Answer >
Natural quartz is found in many countries and geologic locations, including the United States, Mexico, Brazil, Uruguay, Russia, France, Namibia and Morocco. Quartz is the second-most abundant mineral in the Earth's crust, and different types of quartz are found in different areas of the world.Full Answer >