TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ALTERED MINERAL [7 records]

Record 1 2016-02-05

English

Subject field(s)
  • Mineralogy
DEF

A fluoride mineral usually occurring as minute, tabular crystals of a colourless, white, or greyish colour, often altered into pseudomorphs such as fluorite, apatite, and kaolin.

French

Domaine(s)
  • Minéralogie
DEF

Minéral (fluorure) du système cristallin monoclinique, incolore, blanc à gris, à éclat métallique, pulvérulent, massif ou à grains fins.

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Fluoruro de calcio y aluminio, que cristaliza en el sistema monoclínico [...]

OBS

[La prosopita] se encuentra en forma de cristales transparentes e incoloros.

Save record 1

Record 2 2013-01-18

English

Subject field(s)
  • Geology
DEF

Describing a rock texture in which partially altered crystals form a network that encloses remnants of the original, unaltered mineral.

French

Domaine(s)
  • Géologie

Spanish

Campo(s) temático(s)
  • Geología
CONT

Suelo reticulado.

Save record 2

Record 3 2012-04-25

English

Subject field(s)
  • Mineralogy
  • Radioactive Ores (Mining)
Universal entry(ies)
(Th,U)SiO4
formula, see observation
(Th,Fe,Y,P,Ca)SiO4
formula, see observation
DEF

A radioactive mineral consisting of thorium silicate.

CONT

The radioactivity of thorite often brings it to a state of metamiction, in which its crystal structure becomes unstable thereby causing the crystal edges to become smooth and rounded. When this happens, the thorite may gain hydroxyl (OH) molecules in place of the silica (SiO4) molecules and transform into a different mineral, thorogummite.

OBS

Thorite is currently an important ore of uranium. A variety of thorite often called "uranothorite" is particularly rich in uranium... Other varieties of thorite include "orangite, "an orange variety; "calciothorite" an impure variety with trace amounts of calcium and "freyalite" actually a discredited variety containing cerium([which] turned out to be an altered form of the mineral melanocerite).

OBS

Chemical formulas: (Th,U)SiO4 or (Th,Fe,Y,P,Ca)SiO4

French

Domaine(s)
  • Minéralogie
  • Minerais radioactifs (Mines métalliques)
Entrée(s) universelle(s)
(Th,U)SiO4
formula, see observation
(Th,Fe,Y,P,Ca)SiO4
formula, see observation
DEF

Silicate naturel de thorium, du système cristallin quadratique [pouvant] contenir jusqu'à 25 % d'uranium.

OBS

La variété orangite possède une couleur jaune-orangé [...] Il existe une variété uranifère, l'uranothorite.

OBS

Formules chimiques : (Th,U)SiO4 ou (Th,Fe,Y,P,Ca)SiO4

Spanish

Save record 3

Record 4 2011-12-16

English

Subject field(s)
  • Mineralogy
  • Radioactive Ores (Mining)
DEF

A complex, black, opaque titanate of uranium and other elements in which the weight of uranium exceeds that of titanium.

CONT

Uranium vein deposits are concentrations of uranium minerals, such as pitchblende, coffinite, and brannerite, in fractures, shear zones, and stockworks.

OBS

Except for pitchblende, [brannerite] is the most radioactive opaque mineral known.... Found in the placers of Stanley Basin, Idaho. A monoclinic mineral, possibly... ;generally altered externally and internally to brown, yellow-brown, and olive-green.

French

Domaine(s)
  • Minéralogie
  • Minerais radioactifs (Mines métalliques)
DEF

Minéral de calcium, de fer, d'uranium, de titane, de thorium et d'ytrium que l'on trouve, sous forme de cristaux prismatiques noirs ou en masses granulaires, à Stanley Basin dans l'Idaho (États-Unis d'Amérique) et à Bellinzona, en Suisse.

CONT

Les gîtes filoniens d'uranium sont des concentrations de minéraux d'uranium, comme la pechblende, la coffinite et la brannerite, contenue dans des fractures, des zones de cisaillement et des stockwerks.

OBS

[brannerite :] Étymologie : en l'honneur de J.C. Branner, géologue américain.

Spanish

Campo(s) temático(s)
  • Mineralogía
  • Minerales radioactivos (Minas metálicas)
DEF

Óxido de titanio y de uranio. Es un mineral negro, brillante, que cristaliza en el sistema tetragonal o rómbico.

Save record 4

Record 5 1998-07-08

English

Subject field(s)
  • Soil Science
  • Geology
DEF

Very young soils having one or more of the diagnostic layers that can develop readily, but without much leaching, deposition in the subsoil, or mineral alteration.

DEF

In United States Department of Agriculture soil taxonomy, a soil order characterized by having one or more horizons in which mineral materials other than carbonates or amorphous silica have been altered or removed but not accumulated to a significant degree.

French

Domaine(s)
  • Science du sol
  • Géologie

Spanish

Save record 5

Record 6 1978-07-10

English

Subject field(s)
  • Mineralogy
OBS

A mineral. It is an altered perowskite.

French

Domaine(s)
  • Minéralogie
OBS

Substance minérale résultant de l'altération de la perovskite.

Spanish

Save record 6

Record 7 1977-02-28

English

Subject field(s)
  • Geology
  • Astrochemistry and Cosmochemistry
OBS

Shale altered by incipient metamorphic reconstitution but not recrystallized and without the development of partings or preferred mineral orientation.

French

Domaine(s)
  • Géologie
  • Astrochimie et cosmochimie
OBS

Ainsi un ancien basalte est un "métabasalte", et une ancienne argile peut-être appelée "métargile" (...)

Spanish

Save record 7

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