TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

[Said of a mineral that is] amorphous because of the disruption of the crystal structure by radiation from contained or nearby radioactive atoms.  2, record 1, English, - metamict

Record number: 1, Textual support number: 1 CONT

The final group of amorphous minerals comprises those which were originally crystalline but have had their structures destroyed by radioactive bombardment. Such minerals are known as metamicts.  3, record 1, English, - metamict

Record number: 1, Textual support number: 2 CONT

A few metamict minerals, notably brannerite... and davidite, are important constituents of uranium ores in Ontario and Australia.  4, record 1, English, - metamict

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Se dit d'un minéral dont la structure cristalline a été désorganisée par la radioactivité.  2, record 1, French, - m%C3%A9tamicte

Record number: 1, Textual support number: 1 CONT

[...] les espèces «métamictes», dont la structure a été plus ou moins complètement détruite par les rayonnements du thorium ou de l'uranium.  3, record 1, French, - m%C3%A9tamicte

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A moderately to strongly radioactive mineral containing titanium, iron, rare earths, uranium, vanadium, and chromium; dark brown to brownish black.  2, record 2, English, - davidite

Record number: 2, Textual support number: 1 OBS

davidite :... Found in pegmatites associated with quartz, biotite, ilmenite, rutile, iron and copper sulfides. Also found in hypersthene gabbro and anorthosite accompanied by scapolite, quartz, calcite, molybdenite, rutile, sphene, and tourmaline; it is obvious that the mineralization was introduced into the basic rocks by emanations from underlying granites. This is the only known occurrence of primary uranium minerals in basic rocks. One of three known primary uranium ore minerals.  2, record 2, English, - davidite

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

[Minéral du] système cristallin rhomboédrique; [...] opaque, noir à gris-noir; la surface des cristaux est oxydée brun ou rouge.  2, record 2, French, - davidite

Record number: 2, Textual support number: 1 CONT

Minéraux uranifères des terres rares : Ce sont des oxydes complexes parmi lesquels on retrouve ceux d'uranium. À ce groupe, on range : la bétafite, l'euxénite, la fergusonite, la samarskite, la davidite, la brannérite.  3, record 2, French, - davidite

Record number: 2, Textual support number: 1 OBS

La davidite est massive ou, plus rarement, en cristaux bien formés équidimensionnels, cuboïdes ou tabulaires.  2, record 2, French, - davidite

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Uranium minerals. More than 150 uranium-bearing minerals are known to exist, but only a few are common. The five primary uranium-ore minerals are pitchblende, uraninite, davidite, coffinite, and brannerite. These were formed by deep-seated hot solutions and are most commonly found in veins or pegmatites. The secondary uranium-ore minerals, altered from the primary minerals by weathering or other natural processes, are carnotite, tyuyamunite and metatyuyamunite..., torbernite and metatorbernite, autunite and meta-autunite, and uranophane.  4, record 3, English, - uranium%20mineral

Record number: 3, Textual support number: 2 CONT

Sandstone uranium deposits occur as disseminated uraniferous minerals, mainly as pore fillings, in arenaceous rocks, that are predominantly of continental origin in post-Silurian successor or foreland basins.  2, record 3, English, - uranium%20mineral

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

[...] le minéral uranifère du Rand ne présente pas les structures colloformes si caractéristiques dans les pechblendes de filons [...]  3, record 3, French, - min%C3%A9ral%20uranif%C3%A8re

Record number: 3, Textual support number: 2 CONT

[...] la carnotite et d'autres minéraux uranifères du plateau du Colorado, auraient précipité à partir de solutions percolant à travers les grès [...]  3, record 3, French, - min%C3%A9ral%20uranif%C3%A8re

Record 3,  Textual support,  Spanish