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Uraninite, also
known as pitchblende, is a radioactive, uranium-rich
mineral and ore with a
chemical composition that is
largely UO2 but
because of oxidation...
-
naturally formed in
supernova explosions. The
primary uranium ore
mineral is
uraninite (UO2) (previously
known as pitchblende). A
range of
other uranium minerals...
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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...
- and in
hydrothermal vein type deposits. It
occurs in ****ociation with
uraninite, thorite, pyrite, marcasite, roscoelite, clay
minerals and
amorphous organic...
- is now not
regarded as a
separate mineral species, but as a
variety of
uraninite. In 1903,
large reserves of
helium were
found in
natural gas
fields in...
- fractures, joints, and
minor faults within the
Katanga synclinorium.
Uraninite mineralization occurred 630 Ma ago, when
uraniferous solutions percolated...
- 1898 from ore
mined at Jáchymov. They
extracted the
radium compound from
uraninite and
published the
discovery at the
French Academy of
Sciences five days...
-
asbestiform serpentine)
Citrine (yellow
variety of quartz)
Cleveite (variety of
uraninite)
Clinochrysotile (polytype of chrysotile)
Coltan (short for
minerals of...
-
several oxides:
Uranium dioxide or uranium(IV)
oxide (UO2, the
mineral uraninite or pitchblende)
Diuranium pentoxide or uranium(V)
oxide (U2O5) Uranium...
- oxides, silicates, and
hydrates of uranium,
derived from the
alteration of
uraninite. It is
named for its gum-like luster. The
material has been
known by various...
