Cleveite is an impure radioactive variety of uraninite containing uranium, found in Norway. It has the composition UO2 with about 10% of the uranium substituted...

Nils Abraham Langlet, who found helium emanating from the uranium ore cleveite, which is now not regarded as a separate mineral species, but as a variety...

helium (in the same year discovered by William Ramsay) in the mineral cleveite. Langlet was the first to correctly define its atomic weight. He died in...

For the radioactive mineral, see Cleveite. Clevite, Inc. was a Cleveland, Ohio based manufacturing company, founded as the Cleveland Graphite Bronze Company...

uraninite as a result of alpha decay. Helium was first found on Earth in cleveite, an impure radioactive variety of uraninite, after having been discovered...

(group name - asbestiform serpentine) Citrine (yellow variety of quartz) Cleveite (variety of uraninite) Clinochrysotile (polytype of chrysotile) Coltan...

Uranium dioxide is known to be absorbed by phagocytosis in the lungs. Cleveite Ducrete Uranium oxide Uranium glass Uranium tile Leinders, Gregory; Cardinaels...

1895 Sir William Ramsay Isolated helium on Earth by treating the mineral cleveite (a variety of uraninite with at least 10% rare earth elements) with mineral...

Earth, Ramsay, Cleve, and Langlet observed independently helium trapped in cleveite. 1869 D. I. Mendeleev Mendeleev arranges the 63 elements known at that...

Ramsay also managed to isolate helium for the first time while heating cleveite, a mineral. In 1902, having accepted the evidence for the elements helium...

scientist had discovered helium on Earth. By dissolving the radioactive ore cleveite in acid, William Ramsay was able to collect a gas trapped within the rock...

to prove it was nitrogen, Ramsay analyzed a different uranium mineral, cleveite, and found a new element, which he named krypton. This finding was corrected...

Additionally, Cleve and Abraham Langlet discovered helium in the mineral cleveite in 1895. Cleve discovered six forms of dichloronaphthalene and discovered...

following year, Ramsay liberated another inert gas from a mineral called cleveite; this proved to be helium, previously known only in the solar spectrum...

the mineral cleveite. These samples are identified as helium by Norman Lockyer and William Crookes. It is independently isolated from cleveite in the same...

Nils Abraham Langlet, who found helium emanating from the uranium ore cleveite.) 1869: Dmitri Ivanovich Mendeleyev published his periodic table of chemical...

Chrysoberyl Chrysolite cinnabar Cinnabarite Citric acid Citrine quartz Clay Cleveite Clyssus Coal Cobalt Coil (chemistry) Coinage metal Colemanite colloid color...

(1925). Détermination du poids atomique du mélange isotopique de plomb de la clévéïte de Aust-Agder, Norvège. Journal de Chimie Physique, 22, 253-263....

United States Geological Survey Frank Wigglesworth Clarke (1847–1931) Cleveite (uraninite var.): UO2 · UO3 · PO · ThO2 – Swedish chemist Per Teodor Cleve...