Aragonite is a carbonate mineral, one of the two common, naturally occurring, crystal forms of calcium carbonate, CaCO3 (the other form being the mineral calcite). It is formed by biological and physical processes, including precipitation from marine
New research by astronomers at the University of Utah and the Harvard-Smithsonian Center for Astrophysics shows that supermassive black holes can grow big by ripping apart double-star systems and swallowing one of the stars.
Trigg County Kentucky is not only home to Lake Barkley but it also offers the most beautiful scenic back roads in america. If you are walking, running, cycling or motorcycling you will be amazed by the beautiful back drop. Come see for yourself.