pitchblende


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Related to pitchblende: radium

pitch·blende

 (pĭch′blĕnd′)
n.
A massive variety of the mineral uraninite.

[Partial translation of German Pechblende : Pech, pitch + Blende, blende; see blende.]

pitchblende

(ˈpɪtʃˌblɛnd)
n
(Minerals) a blackish mineral that is a type of uraninite and occurs in veins, frequently associated with silver: the principal source of uranium and radium. Formula: UO2
[C18: partial translation of German Pechblende, from Pech pitch2 (from its black colour) + blende]

pitch•blende

(ˈpɪtʃˌblɛnd)

n.
a massive variety of uraninite, occurring in black pitchlike masses: a major ore of uranium and radium.
[1760–70; partial translation of German Pechblende. See pitch2, blende]

pitch·blende

(pĭch′blĕnd′)
A brown to black, often crusty mineral that is a principal ore of uranium. It is highly radioactive.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pitchblende - a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore
atomic number 92, uranium, U - a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
uranium ore - any ore from which uranium can be extracted
Translations
pikivälke
pechblenda

pitchblende

[ˈpɪtʃblend] Npec(h)blenda f
References in periodicals archive ?
Mineralization at Dipole is associated with sheared/brecciated hematite-carbonate-chlorite altered graphitic tuff units, containing pitchblende and sulphides, within a sequence of mafic to intermediate tuffs and massive to pillowed basalt.
Devoting her attention to the mineral, pitchblende, uraninite ore, she reasoned that its emission of rays could be explained only by the presence in the ore of an unknown substance or substances.
0x20 Mineralization occurs as blebs and splashes of pitchblende and was observed throughout the radioactive section.
Uranium enrichment, evident on the eU/eTh ratio map, was peripheral to the potassium anomaly and related to numerous small pitchblende veins (Figure 4b) Such mineralization may have shown that uranium moved laterally away from the system's hydrothermal centre.
Faces under limestone, below stalactite, stalagmite, Faces in blue stones and flint, In the sinew of buffalo and birch, In the moody fires of pitchblende, red oak, Submerged, lost, Under piles of bones, antlers and vegetable starch.
But on February 17, 1898, Marie tested a sample of the heavy, black pitchy mineral compound known as pitchblende, which produced a current far stronger than that produced by uranium.
Only there is a combination of shale, pitchblende and pech possible.
fragments of radioactive pitchblende picked up for their peculiar
These sentences introduce theorems--for example, "If pitchblende is placed between four charged plates / then one may measure its weight by the balance .
The dominant uranium-bearing mineral in the granitoid-hosted ore zones (veins) below 50 m is pitchblende (Chatterjee et al.
Many rocks and minerals, such as the pitchblende refined by Madame Curie to produce the first samples of radium, are naturally radioactive and emit radiation all the time.