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GISEMENT SEGREGATION [2 records]
Record 1 - internal organization data 2003-10-27
Record 1, English
Record 1, Subject field(s)
- Metals Mining
Record 1, Main entry term, English
- magmatic segregation deposit
1, record 1, English, magmatic%20segregation%20deposit
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An ore deposit formed by magmatic segregation, generally in mafic rocks and layered intrusions, as crystals of metallic oxides or from an immiscible sulfide liquid. 2, record 1, English, - magmatic%20segregation%20deposit
Record number: 1, Textual support number: 1 OBS
The term "magmatic segregation deposit" is now applied to all ore deposits that are direct crystallization products of a magma, exclusive of pegmatites. They usually form in deep-seated intrusive bodies, but have been known to form in sills and even in lava flows. A magmatic segregation deposit may constitute the entire rock mass or a compositional layer, or may be defined by the presence of valuable accessory minerals in an otherwise normal igneous rock. 3, record 1, English, - magmatic%20segregation%20deposit
Record 1, French
Record 1, Domaine(s)
- Mines métalliques
Record 1, Main entry term, French
- gîte de ségrégation
1, record 1, French, g%C3%AEte%20de%20s%C3%A9gr%C3%A9gation
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
«Gîtes de ségrégation». La concentration des minéraux utiles dans la roche éruptive est beaucoup plus poussée que dans le type des gîtes d'inclusions. Elle arrive parfois à créer des masses de minerai presque sans gangue. Elle provient de ségrégation due à une différenciation du magma poussée jusqu'aux extrêmes en certaines parties de la masse. Les principaux minéraux qui peuvent se rassembler de la sorte sont les suivants d'après S.J. Shand : magnétite, ilménite, chromite et autres spinelles, pyrite, pyrrhotine, chalcopyrite, nickéline, mispickel. Il s'y adjoint en moindre quantité : pentlandite, molybdénite, smaltine, cobaltine, sperrylite, et les sulfures, arséniures, antimoniures d'argent. 1, record 1, French, - g%C3%AEte%20de%20s%C3%A9gr%C3%A9gation
Record 1, Key term(s)
- gisement de ségrégation
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1976-06-19
Record 2, English
Record 2, Subject field(s)
- Hydrology and Hydrography
Record 2, Main entry term, English
- segregation deposit 1, record 2, English, segregation%20deposit
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, French
Record 2, Domaine(s)
- Hydrologie et hydrographie
Record 2, Main entry term, French
- gisement de ségrégation
1, record 2, French, gisement%20de%20s%C3%A9gr%C3%A9gation
masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
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