Mineralogy of metalliferous sediments from atlantis : II deep-Red Sea

Abstract EN

Min eralogical compos itio n o f 2'15 sa mples of Atlantis II.

Deep mctulli fcrous sed ime nts was studied hy X-r ay diffracti on an alvsi».

Var iou s type s o f silica tes .

iro n and manganese ox ides.

carbona te s.

sulfa te s.

sulfides a rc th e commo n mineral phase s.

T he minerals exhibit syst L'matie di stribution pattern in the sed ime nts cores a nd facilitate a facie s an d sub tuc ics classificatio n.

Typical mineralogi cal se que nce from bottom to lop is: sulfide s.

silicates .

side rite.

Cu-Fe-Mn ca rbo na te .

rh od och rosit e.

iro n oxid e".

man ga nit c and am orphous silica.

iro n or manganese oxide s .

Mine ralogical vari ation s in the Arl antis II.

Deep se d ime nts arc con sidered to he du e to the p rese nce o f rep e at ed depo siti o nal cycles related to fluctu .u ion in temperat ur e.

pi I an d perhaps oxyge n fugacit y.

during th e mixin g o f magmatic hyd roth cr mal solution and se a-water.-