- 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...
-
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...
-
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...
- For the
radioactive mineral, see
Cleveite. Clevite, Inc. was a Cleveland, Ohio
based manufacturing company,
founded as the
Cleveland Graphite Bronze Company...
- (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 gl****
Uranium tile Leinders, Gregory; Cardinaels...
-
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...
-
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...
- 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...
- Earth, Ramsay, Cleve, and
Langlet observed independently helium trapped in
cleveite. 1869 D. I.
Mendeleev Mendeleev arranges the 63
elements known at that...
