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HEMATITE LAMELLAE [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2006-12-06

English

Subject field(s)
  • Mineralogy
  • Geochemistry
CONT

The scale of the exsolved lamellae will depend on both the cooling rate and the initial composition of the solid solution.

CONT

The ilmenite carries up to 12% hematite as exsolution lamellae.

CONT

The magnetite is medium to coarse grained and contains ilmenite in very fine exsolved blades.

CONT

Hemo-ilmenite, the principal ore mineral at the Lac Tio and Tellnes deposits... hosted in anorthosites, is typically equigranular with coarse exsolution lamellae of hematite that constitute as much as 30 mole per cent of the grains...

Key term(s)
  • unmixing lamellae
  • exsolution lamellae
  • exsolved lamellae

French

Domaine(s)
  • Minéralogie
  • Géochimie
CONT

De manière typique, l'hémo-ilménite, principale phase métallifère des gisements de Lac Tio et de Tellnes [...] qui sont encaissés dans des anorthosites, est équigranulaire, avec de grosses lamelles d'exsolution d'hématite qui constituent jusqu'à 30 % (pourcentage molaire) des grains [...]

CONT

Lamelles d'hématite d'exsolution.

CONT

Lames d'hématite exsolvées.

Spanish

Save record 1

Record 2 2006-11-15

English

Subject field(s)
  • Mineralogy
DEF

A mineral which transmits no light through a thin section under a microscope.

CONT

... the most plausible explanation of the opaque minerals is that they represent a metamorphosed primary magmatic assemblage modified by supergene alteration.

CONT

The opaque minerals in the basalt are predominantly titaniferous magnetite and ilmenite represented by a reticulated network of leucoxene lamellae. Other opaques are chrome spinel, pyrite with martite rims, chalcopyrite, and hematite.

OBS

[An opaque mineral is] usually a native metal, sulfide, or metallic oxide mineral.

OBS

As a noun, opaque is usually used in the plural.

OBS

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

Key term(s)
  • opaques

French

Domaine(s)
  • Minéralogie
DEF

Minéral [pour lequel] la totalité de la lumière est réfléchie par la surface du spécimen.

CONT

Les minéraux opaques sont le plus souvent des minéraux accessoires et donc représentent normalement un petit pourcentage des minéraux ferromagnésiens.

CONT

Le fond microcristallin - la mésostase - est constitué des mêmes minéraux auxquels s'ajoutent des oxydes métalliques (les «opaques»). [...] Dans cette autre lave vitreuse, de minuscules cristaux de minéraux opaques marquent bien la «fluidalité» de la roche.

OBS

opaques (nom masculin pluriel) : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Key term(s)
  • opaques

Spanish

Save record 2

Record 3 2006-05-16

English

Subject field(s)
  • Petrography
  • Mineralogy
DEF

Said of the texture of a rock [or mineral] having crystals of the same or nearly the same size.

CONT

The typical porphyry copper deposit is a cylindrical stock-like, composite mass having an elongate or irregular outcrop..., often with an outer shell of equigranular medium-grained rock.

CONT

Hemo-ilmenite, the principal ore mineral at the Lac Tio and Tellnes deposits... is typically equigranular with coarse exsolution lamellae of hematite that constitute as much as 30 mole per cent of the grains...

PHR

Equigranular aggregate.

French

Domaine(s)
  • Pétrographie
  • Minéralogie
DEF

Se dit de la structure d'une roche [ou d'un minéral] dont les grains ont des tailles voisines.

CONT

De manière typique, l'hémo-ilménite, principale phase métallifère des gisements de Lac Tio et de Tellnes [...] est équigranulaire avec de grosses lamelles d'exsolution d'hématite qui constituent jusqu'à 30 % (pourcentage molaire) des grains [...]

PHR

Agrégat équigranulaire.

Spanish

Save record 3

Record 4 2004-01-26

English

Subject field(s)
  • Mineralogy
OBS

Plural :hematite lamellae.

Key term(s)
  • hematite lamellae

French

Domaine(s)
  • Minéralogie

Spanish

Save record 4

Record 5 2003-10-31

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Geochemistry
CONT

Hemo-ilmenite, the principal ore mineral at the Lac Tio and Tellnes deposits... hosted in anorthosites, is typically equigranular with coarse exsolution lamellae of hematite that constitute as much as 30 mole per cent of the grains...

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Géochimie
CONT

De manière typique, l'hémo-ilménite, principale phase métallifère des gisements de Lac Tio et de Tellnes [...] qui sont encaissés dans des anorthosites, est équigranulaire avec de grosses lamelles d'exsolution d'hématite qui constituent jusqu'à 30 % (pourcentage molaire) des grains [...]

Spanish

Save record 5

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