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UNMINERALIZED [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-01-15

English

Subject field(s)
  • Petrography
  • Tectonics
DEF

A group of extrusive igneous rocks, typically porphyritic and commonly exhibiting flow texture, with phenocrysts of quartz and alkali feldspar in a glassy to cryptocrystalline groundmass.

OBS

liparite: A synonym of rhyolite used by German and Soviet authors. Its name, given by Roth in 1861, is derived from the Lipari Island, in the Tyrrhenian Sea. Not recommended usage; the much more widely used synonym rhyolite has priority by one year.

PHR

Mineralized rhyolite, unmineralized rhyolite.

French

Domaine(s)
  • Pétrographie
  • Tectonique
DEF

Roche magmatique effusive, fréquemment riche en verre, de teinte claire, à microlites et phénocristaux rares.

OBS

Sa structure est fluidale, plus ou moins sphérolitique et sa composition correspond à celle des granites.

OBS

liparite : certains auteurs considèrent la liparite comme une variété de rhyolite pauvre en verre, alors que certains autres traitent ce terme comme synonyme.

PHR

Rhyolite minéralisée, rhyolite non minéralisée.

Spanish

Campo(s) temático(s)
  • Petrografía
  • Tectónica
DEF

Roca volcánica, subalcalina o alcalina, ácida, rica en vidrio y con cristales de cuarzo, feldespato alcalino y biotita y con textura fluidal [...] con frecuencia tiene plagioclasa y anfíbol.

OBS

liparita: de isla de Lipari, Italia.

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Record 2 2011-07-29

English

Subject field(s)
  • Economic Geology
  • Metals Mining
DEF

A mass of unmineralized rock lying within an orebody.

OBS

horse: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Géologie économique
  • Mines métalliques
DEF

Zone stérile continue située à l'intérieur d'une formation minéralisée.

Spanish

Campo(s) temático(s)
  • Geología económica
  • Minas metálicas
DEF

Banco de roca estéril en el seno de la capa de mineral.

Save record 2

Record 3 2006-01-11

English

Subject field(s)
  • Petrography
CONT

... multiple generations of dolomite and the development of nodular dolomite distinguish mineralized calcareous siltstones from nonmineralized lithological equivalents ...

French

Domaine(s)
  • Pétrographie
CONT

[...] de multiples générations de dolomite et la présence de nodules de dolomite distinguent les siltstones calcareux minéralisés de leurs équivalents lithologiques non minéralisés [...]

Spanish

Save record 3

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