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THUCHOLITE [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-10-12

English

Subject field(s)
  • Organic Ores - Various
  • Bitumen and Bituminous Shales
  • Crude Oil and Petroleum Products
  • Chemistry
DEF

The complex, fossilized organic material present in sedimentary rocks, especially in shales; converted to petroleum products by distillation.

CONT

Layers of sulphides and organic substances, such as kerogen, occur locally ...

OBS

Kerogen, also referred to as carbon, hydrocarbon, and thucholite, is abundant in some, but not all, South African ores. It occurs as granules and as concordant seams associated with and incorporating heavy minerals.

French

Domaine(s)
  • Exploitation de minerais organiques divers
  • Exploitation des schistes bitumineux
  • Pétroles bruts et dérivés
  • Chimie
DEF

Matière organique contenue dans les schistes bitumeux et susceptible de donner des hydrocarbures par distillation.

CONT

Des lits de sulfures et de substances organiques telles que le kérogène se rencontrent localement [...]

OBS

Le kérogène, auquel on réfère également par les termes de carbone, d'hydrocarbures et de thucholite, est abondant dans certains minerais d'Afrique du Sud. Il se présente sous forme de granules et de minces couches concordantes qui sont associées à des minéraux lourds et qui en renferment.

Spanish

Campo(s) temático(s)
  • Explotación de minerales orgánicos - varios
  • Explotación de esquistos bituminosos
  • Petróleo bruto y derivados
  • Química
Save record 1

Record 2 2006-11-03

English

Subject field(s)
  • Petrochemistry
CONT

... the idea that the thucholite might have formed relatively late where fluidal hydrocarbon came in contact with radioactive minerals is not implausible.

OBS

fluidal: Pertaining to a fluid, or to its flowing motion.

French

Domaine(s)
  • Chimie du pétrole

Spanish

Save record 2

Record 3 2005-07-04

English

Subject field(s)
  • Radioactive Ores (Mining)
CONT

... thucholite and uranoan carbon are present as veinlets, globules, and lenses.

French

Domaine(s)
  • Minerais radioactifs (Mines métalliques)
CONT

[...] de la thucholite et du carbone uranifère se présentent sous forme de filonnets, de globules et de lentilles.

Spanish

Save record 3

Record 4 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 4

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