Cleveite is a radioactive mineral containing uranium and found in Norway. Radioactive decay is the process in which an unstable Atomic nucleus loses energy by emitting ionizing particles and Radiation. A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Uranium (jʊˈreɪniəm is a silvery-gray Metallic Chemical element in the Norway ( Norwegian: Norge ( Bokmål) or Noreg ( Nynorsk) officially the Kingdom of Norway, is a Constitutional It is an impure variety of uraninite, and has the composition UO2 with about 10% of the uranium substituted by rare earth elements. Rare earth elements and rare earth metals are according to IUPAC, the collection of seventeen Chemical elements in the Periodic table, namely  It was named after Swedish chemist Per Teodor Cleve. Per Teodor Cleve ( Stockholm February 10, 1840 &ndash Uppsala June 18, 1905) was a Swedish Chemist
Cleveite was the first known terrestrial source of helium, which is created by the alpha radiation of the uranium and then lies trapped (occluded) within the mineral. Helium ( He) is a colorless odorless tasteless non-toxic Inert Monatomic Chemical Alpha decay is a type of radioactive decay in which an Atomic nucleus emits an Alpha particle (two protons and two neutrons bound together into a particle The first sample of helium was obtained by William Ramsay in 1895 when he treated a sample of the mineral with acid. Sir William Ramsay (2 October 1852 &ndash 23 July 1916 was a Scottish chemist who discovered the Noble gases and received the Nobel Prize in Year 1895 ( MDCCCXCV) was a Common year starting on Tuesday (link will display full calendar of the Gregorian calendar (or a Common year In Computer science, ACID ( Atomicity Consistency Isolation Durability) is a set of properties that guarantee that Database transactions are  Cleve and Abraham Langlet succeeded in isolating helium from cleveite at about the same time. Nils Abraham Langlet ( July 9 1868 - March 30 1936; known by his second given name was a Swedish chemist.
Yttrogummite is a variant of cleveite also found in Norway. Norway ( Norwegian: Norge ( Bokmål) or Noreg ( Nynorsk) officially the Kingdom of Norway, is a Constitutional