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METAURANOCIRCITE [2 records]

Record 1 2012-02-24

English

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

A mineral of the meta-autunite group.

CONT

... secondary uranium minerals such as metauranocircite, liebigite and becquerelite. The secondary uranium minerals are alteration products after pitchblende.

OBS

Minerals of the meta-autinite group are found associated with one another and with other secondary uranium minerals as oxidation products of uraninite and other uranium-bearing primary minerals.

French

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

Uranylphosphate de baryum zéolitique [...]

OBS

Minéral secondaire d'uranium [...], produit d'altération de la pechblende.

Spanish

Save record 1

Record 2 2005-03-08

English

Subject field(s)
  • Geochemistry
  • Erosion and Weathering (Geol.)
DEF

The rock or mineral formed as a result of alteration; often referred to as secondary.

CONT

Pyrite is present in some cases but appears to be either vein-related or a supergene alteration product after pyrrhotite.

CONT

Locally the veins contain coffinite, uranoan carbon(thucholite) and secondary uranium minerals, such as metauranocircite, liebigite and becquerelite. The secondary uranium minerals are alteration products after pitchblende.

CONT

Associated alteration products include clay (kaolinite and halloysite), sericite, pyrite, and fluorite ...

French

Domaine(s)
  • Géochimie
  • Érosion et corrosion (Géologie)
CONT

La magnésite est un produit d'altération des serpentines [...]

CONT

[...] la décomposition des feldspaths amène la formation de très nombreux produits d'altération : silicates (amphiboles et hydromicas, grenats, épidote, zoïsite, dipyre, argiles diverses), carbonates [...], oxydes de fer, de titane [...]

CONT

Les processus physiques, chimiques et biologiques qui conduisent de la roche saine à ses produits de décomposition sont appelés altération.

CONT

[...] les feldspaths et les biotites [...] constituent à la surface de la terre la plus grosse masse de minéraux altérés, soit en place, soit après sédimentation de leurs produits d'altération.

Spanish

Save record 2

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