Uranium ore support a neutron-mediated chain reaction). Uranium, thorium, and potassium are the main elements contributing to natural terrestrial radioactivity. Uranium has the highest atomic weight of the naturally occurring elements and is approximately 70% denser than lead, but not as dense as tungsten, gold, platinum, iridium, or osmium. It is always found combined with other elements. Along with all elements having atomic weights higher than that of iron, it is only naturally formed in supernova explosions. The primary uranium ore mineral is uraninite (UO) (previously known as pitchblende). A range of other uranium minerals can be found in various deposits. These
Mineral industry of Paraguay shown interest in the country, which could support continued economic growth and foreign direct investment (FDI) in new technologies well into the next decade. In 2006, Paraguay produced mostly cement, clays, iron ore, natural gas, pig iron, and steel. Paraguay's mineral reserves and resources were unidentified. The mineral industry of Paraguay mostly consists of Paraguayan state-owned firms. The structure of the country's mineral industry would, however, change, particularly in the natural gas sector, to a privately and/or joint-venture owned, government-regulated regime from one that was only government owned (Banco Central del Paraguay, 2007). FDI inflows to Mercosur increased to $25.1