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Quartz is the most common mineral on the face of the Earth. Chemically, quartz is a compound called silicon dioxide, SiO2. As a crystal, quartz is used as a semiprecious gemstone. It is a relatively hard stone, 7 on the Mohs hardness scale. Quartz is one of the most abundant mineral crystals and can take […]

Ready for a road trip? Want to find your own Quartz crystals? Get out the map and chart your course for Arkansas. This is the best place in the United States to dig for quartz crystals. There are many crystal mines there and I have my favorite which is near Jessieville, Arkansas, near Hot Springs. […]

The History Of Coal Usage Coal was initially used as a domestic fuel, until the industrial revolution, when coal became an integral part of manufacturing for creating electricity, transportation, heating and molding purposes. The large scale mining aspect of coal was introduced around the 18th century, and Britain was the first nation to successfully use […]