Arsenic mineralogy of near-neutral soils and mining waste at the Smolotely-Lisnice historical gold district, Czech Republic

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10374879" target="_blank" >RIV/00216208:11310/18:10374879 - isvavai.cz</a>

Alternative codes found

RIV/67985831:_____/18:00486219 RIV/00025798:_____/18:00000030

Result on the web

<a href="https://doi.org/10.1016/j.apgeochem.2017.12.018" target="_blank" >https://doi.org/10.1016/j.apgeochem.2017.12.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apgeochem.2017.12.018" target="_blank" >10.1016/j.apgeochem.2017.12.018</a>

Result language

angličtina

Original language name

Arsenic mineralogy of near-neutral soils and mining waste at the Smolotely-Lisnice historical gold district, Czech Republic

Original language description

The mineralogical composition of mining wastes and contaminated soils is the key factor that controls the retention and release of pollutants. Herein, we used bulk analyses, selective extractions, X-ray diffraction, electron microprobe, and Raman microspectrometry to determine the distribution and speciation of As as a function of depth in four slightly acidic to near-neutral soil and mining waste profiles at the Smolotely-Lisnice historical Au district (Czech Republic). The soils there, which have developed from long-term weathering, exhibit As levels as high as 1.87 wt% in the richest area; the 80-90 year old mining waste contains up to 0.87 wt% As. In the soils and mining waste, the primary As ore (arsenopyrite) has almost completely oxidized to secondary As minerals such as arseniosiderite, bariopharmacosiderite, yukonite, and Fe (hydr) oxides (ferrihydrite, goethite, and hematite), with variable As2O5 and CaO concentrations (up to 27.5 and 3.8 wt%, respectively). Arsenic distribution and speciation were found to vary with depth and soil type. Whereas the presence of multiple Ashosting phases that occurred in the mining waste and cambisol developed over a granodiorite, bariopharmacosiderite was absent in the cambisol overlying gabbrodiorite. Poorly-crystalline phases such as yukonite and As-bearing ferrihydrite were not detected in the gleysol. These differences in the secondary As mineralogy were attributed to the different redox conditions and variations in the prevailing chemical systems in the saprolites/soils. The variable solubility of the secondary As-bearing phases influences the mobility of As in shallow soils and near-surface mining wastes.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA16-09352S" target="_blank" >GA16-09352S: Towards a better understanding of environmental As mineralogy under reducing conditions:Formation of realgar and evaluation of its role in remediation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Geochemistry

ISSN

0883-2927

e-ISSN

—

Volume of the periodical

89

Issue of the periodical within the volume

FEBRUARY

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

243-254

UT code for WoS article

000424848200023

EID of the result in the Scopus database

2-s2.0-85039153532