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MOTHER LODE [4 records]

Record 1 2005-08-11

English

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

A mineral deposit consisting of a zone of veins, veinlets, disseminations, or planar breccias ...

CONT

A lode consists of several veins spaced closely enough so that all of them, together with the intervening rock, can be mined as a unit.

CONT

A system of veins that can be mined directly forms a lode, for example the mother lode of the California gold rush.

French

Domaine(s)
  • Géologie économique
  • Mines métalliques
CONT

Un «lode» [...] est formé d'un certain nombre de veines parallèles de remplissage de fissures, où le roc qui les sépare est parfois minéralisé, de façon à former un massif continu de minerai.

Spanish

Campo(s) temático(s)
  • Geología económica
  • Minas metálicas
Save record 1

Record 2 2005-05-05

English

Subject field(s)
  • Various Metal Ores
DEF

An epigenetic mineral filling of a fracture in a host rock, in tabular or sheetlike form, often with associated replacement of the host rock; a mineral deposit of this form and origin.

CONT

A system of veins that can be mined directly forms a lode, for example the mother lode of the California gold rush.

OBS

A vein and a lode are generally the same thing; the former being more scientific, the latter, a miner’s name for it.

OBS

Lode, as used by miners, is nearly synonymous with the term vein, as employed by geologists.

French

Domaine(s)
  • Minerais divers (Mines métalliques)
DEF

Masse minérale de forme tabulaire, qui s'est déposée dans une fracture du roc.

OBS

Une veine a la forme d'un dyke, mais le dyke est composé de roche. On réserve le nom de veines pour les massifs de minerais ayant une composition différente de celle des roches.

OBS

[Le filon] est généralement compris entre deux surfaces sensiblement parallèles.

Spanish

Campo(s) temático(s)
  • Minerales varios (Minas metálicas)
DEF

Yacimiento mineral estrecho y largo.

Save record 2

Record 3 1999-05-03

English

Subject field(s)
  • Gold and Silver Mining
CONT

In areas where such ultramafic rocks have been deformed and geochemically altered, they provide the main deposits of asbestos... They may also be associated with gold, for example, the Mother Lode deposits of California.

French

Domaine(s)
  • Mines d'or et d'argent
CONT

[...] la relation entre les minéralisations aurifères, les zones de faille et les roches ultramafiques fortement altérées est comparable aux gisements de classe mondiale de type Mother Lode (Californie). [...] Plusieurs indices aurifères comparables aux gisements de type Mother Lode (Californie) ont été découverts sur la propriété, le long de cette bande ultramafique [...]

Spanish

Save record 3

Record 4 1999-04-28

English

Subject field(s)
  • Gold and Silver Mining
CONT

The epithermal deposits... are distinct... from "mesothermal" or Mother Lode type gold-quartz vein deposits...

French

Domaine(s)
  • Mines d'or et d'argent
CONT

Les travaux ont d'abord été principalement axés sur la définition des meilleurs secteurs au sein de la séquence ultramafique (type Mother Lode) [...]

Spanish

Save record 4

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