Publication details
Mineralogy, petrography and geochemistry of sediments used in pollutant sorption experiments
| Authors | |
|---|---|
| Year of publication | 2003 |
| Type | Article in Periodical |
| Magazine / Source | Bulletin of Geosciences |
| MU Faculty or unit | |
| Citation | |
| Web | http://nts2.cgu.cz/servlet/page?_pageid=245,247,273&_dad=portal30&_schema=PORTAL30&453_TOC_140721.p_subid=71882&453_TOC_140721.p_sub_siteid=33&453_TOC_140721.p_edit=0 |
| Field | Geochemistry |
| Keywords | soil; lake bottom sediment; sandstone; clay minerals; smectite; illite; kaolinite; chlorite; carbonate cement |
| Description | Sediments from the bottom of the Horní Bečva Reservoir(HBS2,HBS6,HBV4)contain identical mineral phases andvaryinclaycontents(HBS2 1wt%,HBV4 18.5wt%).Withtheincreasingclayamount,thecontentsofFe-oxyhydroxidesandorganicmatteralsoincrease.Claymineralsinlakebottomsedimentsarerepresentedmainlybykaolinite(K),chlorite(C)andmixed-layerillite/smectite(I/S)withexpandabilityofca.40%S[(K>C)=I/S].NeogeneargillaceousandsiltysandstonefromStaréMěsto(SMA)comprisesthehighestamountofclayfraction(31wt%).Phyllosilicates,especiallysmectiteandkaolinite(S=K),surroundtherock-formingminerals.H(Hevlín)and Žd(Ždánice)PaleogeneandNeogenesiltysandstonescontaincarbonatecement(dolomite>calcite).ThedominantclaymineralinbothsandstonesisI/Swithexpandabilityofca.95%S.TheHsamplecontainsalsoaconsiderableamountofchloriteanddiscreteillite(S>C>Id). Žd samplecompriseslesskaolinitepluschloriteanddiscreteillite[S>(K>C)>Id].ThesoilhorizonfromLelekovice(Le4)istypicalinthepresenceofcarbonates,weatheredamphibolesandepidoteminerals(derivedfromametabasitesource),inhighercontentsofclayfraction(15wt%),organicmatterandFe-oxyhydroxides.ThemainclaymineralinsampleLe4ismixed-layerillite/smectitewithexpandabilityaround65%Sandkaolinite(I/S>K).ThesoilhorizonfromČervenohorskésedloSaddle(SČS5)istypicalintheabsenceoffeldspars,inthehighcontentofmuscoviteandbiotite(derivedfrommicaschists)andinthehighestamountoforganicmatterandFe-oxyhydroxides. Clay minerals of this sample include mostly discrete illite; chlorite and kaolinite are less abundant (Id > C > K). |
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