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HALO GEOCHIMIQUE [1 record]
Record 1 - internal organization data 2001-07-25
Record 1, English
Record 1, Subject field(s)
- Geochemistry
- Erosion and Weathering (Geol.)
- Metals Mining
Record 1, Main entry term, English
- geochemical halo
1, record 1, English, geochemical%20halo
proposal
Record 1, Abbreviations, English
Record 1, Synonyms, English
- geochemical aureole 1, record 1, English, geochemical%20aureole
proposal
- geochemical envelope 1, record 1, English, geochemical%20envelope
proposal
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
See record "halo" in the same fields. 1, record 1, English, - geochemical%20halo
Record number: 1, Textual support number: 2 OBS
See also the record "alteration envelope." 1, record 1, English, - geochemical%20halo
Record 1, French
Record 1, Domaine(s)
- Géochimie
- Érosion et corrosion (Géologie)
- Mines métalliques
Record 1, Main entry term, French
- halo géochimique
1, record 1, French, halo%20g%C3%A9ochimique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Halos.- On sait que beaucoup de minéralisations sont «annoncées» par des modifications dans le chimisme [...] des roches encaissantes. Les halos de propylitisation autour des concentrations économiques des porphyres cuprifères sont parmi les plus caractéristiques. [...] En fait, les halos ne sont qu'un cas extrême des phénomènes de zonalité. [...] Exemple de halo géochimique. Anomalies en or autour de la mine Lamaque, Val d'or, Québec [...] 1, record 1, French, - halo%20g%C3%A9ochimique
Record number: 1, Textual support number: 2 CONT
[...] ces gîtes épais ont des teneurs plus fortes que les autres gîtes de sulfures massifs, un rapport Zn/Cu plus élevé, une absence d'équilibre isotopique du soufre entre les minéraux et de larges halos géochimiques. 1, record 1, French, - halo%20g%C3%A9ochimique
Record 1, Spanish
Record 1, Textual support, Spanish
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