Abstract
Iron-containing smectites are not affected significantly by Mg-containing dilute sulphide solutions. Concentrated solutions reduce most of the Fe in montmorillonites; Fe is partially extracted from nontronite with concomitant disintegration of the structure. It is concluded that direct Mg → Fe exchange in clays seems improbable, but that depletion of Mg in interstitial waters of anoxic sediments may be due to reaction of Mg-containing solutions with partially disintegrated clay.
| Original language | English |
|---|---|
| Pages (from-to) | 1907-1909 |
| Number of pages | 3 |
| Journal | Geochimica et Cosmochimica Acta |
| Volume | 42 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1978 |