pitchblende


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Related to pitchblende: radium

pitch·blende

(pich'blend),
A mineral of pitchlike appearance, chiefly uranium dioxide, the main source of uranium and elements, such as radium, produced as a result of the radioactive breakdown of that element.
Synonym(s): uraninite

pitchblende

(pĭch′blĕnd)
Uraninite, the principal source of uranium. It is a mineral that resembles pitch.
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References in periodicals archive ?
The degree of radioactivity within this interval is highly variable and associated with visible pitchblende mineralization.
The assumption by that time was that pitchblende's dramatic ionizing power was caused by a new, heretofore unknown element.
Elegimos para nuestro trabajo al pitchblende, un mineral de uranio que en su estado puro es aproximadamente cuatro veces mas activo que el oxido de uranio.
The Belgian Congo ore ("pitchblende") that was processed downtown at Mallinckrodt Chemical Works averaged 60-65 percent uranium.
They consist of finely disseminated pitchblende, with minor chalcopyrite, pyrite and galena.
These contain quartz and sulphide veins and are characterized by a collection of uranium minerals such as pitchblende, coffinite, uraninite and black U-oxides (parapitchblende) (Arribas, 1962), being the pitchblende usually replaced by sulphides, especially pyrite and melnikovite.
The cataclastites in the central part of the deposit are sometimes enriched in graphite and sulphides, and host uranium mineralization enriched in coffinite, partly also pitchblende. In the southern part of the deposit, the OR-5 shear zone splits to a higher number of thinner shear zones (OR-5, OR-5a, OR-3, OR-3b) (Figs.
Pitchblende could be a symbol for Curie's dark and complex life: Embedded in both were elements of extraordinary brilliance and intensity.
LaBine found pitchblende on the lake's eastern shore.
[1] A 1946 stamp shows a photograph of Great Bear Lake, NWT, where pitchblende was discovered by Gilbert A.