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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A texture, often found in certain types of mineral deposits, where crystals have grown in a radiating and concentric manner which may reflect underlying geochemical controls. Lead-zinc deposits of sedimentary origin often show colloform banding of pyrite and sphalerite ...  2, fiche 1, Anglais, - colloform%20banding

Record number: 1, Textual support number: 1 CONT

... colloform banding ... is a very fine scale banding involving one or more sulphides very like the banding in agate. Some workers believe that it results from colloidal deposition and that the banding is analogous to the Liesegang rings formed in some gels. This banding is very susceptible to destruction by recrystallization and may be partially or wholly destroyed by diagenesis or low grade metamorphism, producing a granular ore.  3, fiche 1, Anglais, - colloform%20banding

Record number: 1, Textual support number: 2 CONT

Textures vary with the degree of recrystallization. The dominant original textures appear to be colloform banding of the sulphides with much development of framboidal pyrite, perhaps reflecting colloidal deposition. Commonly however, recrystallization, often due to some degree of metamorphism, has destroyed the colloform banding and produced a granular ore.  3, fiche 1, Anglais, - colloform%20banding

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 OBS

Voir «rubanement» et «colloforme».  1, fiche 1, Français, - rubanement%20colloforme

Fiche 1,  Justifications,  Espagnol