Journal ArticleDOI
Geochemical controls on the environmental mobility of Sb and As at mesothermal antimony and gold deposits
Reads0
Chats0
TLDR
Antimony and arsenic are potentially toxic in the environment when dissolved in water at low levels (<0·01 mg/l) as mentioned in this paper, and they are commonly mobilised into the environment from mesothermal mineral deposits.Abstract:
Antimony and arsenic are commonly mobilised into the environment from mesothermal mineral deposits. Both these metalloids are potentially toxic in the environment when dissolved in water at low levels (<0·01 mg/l). Mobility of antimony, in comparison to that of arsenic, is documented at mine sites in four different mesothermal systems in low grade Palaeozoic-Mesozoic metamorphic terranes of New Zealand (Globe Hill, Reefton; Macraes, Otago; and Endeavour Inlet, Marlborough) and Australia (Hillgrove, New South Wales). Dissolved antimony can reach ~50 mg/kg in mine waters where evaporative concentration occurs in oxidised near-neutral pH mine waters in contact with stibnite. Such waters are chemically saturated with respect to antimony oxides, and antimony oxide precipitation occurs locally. Most mine waters have lower dissolved Sb concentrations, especially where high rainfall causes dilution. However, high rainfall areas have widespread diffuse mobilisation of both Sb and As to give elevated backgr...read more
Citations
More filters
Journal ArticleDOI
Antimony as a global dilemma: Geochemistry, mobility, fate and transport ☆
TL;DR: Raising awareness through the mobility, fate and transport of Sb as well as further transdisciplinary research on Sb from global scientific communities will be a crucial stage to establish a sustainable Sb mitigation on a global scale.
Journal ArticleDOI
Arsenic and antimony contamination of waters, stream sediments and soils in the vicinity of abandoned antimony mines in the Western Carpathians, Slovakia
Edgar Hiller,Bronislava Lalinská,Martin Chovan,Ľubomír Jurkovič,Tomáš Klimko,Michal Jankulár,Róbert Hovorič,Peter Šottník,Renáta Fľaková,Zlatica Ženišová,Ivana Ondrejková +10 more
TL;DR: In this paper, the authors focused on the environmental effects of the abandoned Sb mines on water, stream sediment and soil since the mines are situated in the close vicinity of residential areas.
Journal ArticleDOI
Sequential and simultaneous adsorption of Sb(III) and Sb(V) on ferrihydrite: Implications for oxidation and competition
Pengfei Qi,Thomas Pichler +1 more
TL;DR: In the presence of ferrihydrite and under redox conditions, Sb(V) should be the dominant species in aquatic environments, since S b(III) is adsorbed preferentially and at the same time oxidized to Sb (V).
Journal ArticleDOI
Mineralogical controls on environmental mobility of arsenic from historic mine processing residues, New Zealand
Laura Haffert,Dave Craw +1 more
TL;DR: This article showed that arsenopyrite precipitate cements the ground in the vicinity of the roaster area, thereby creating an impermeable surface crust and encapsulating weathered arsenolite grains within the cement.
Journal ArticleDOI
Transgenic creeping bentgrass overexpressing Osa-miR393a exhibits altered plant development and improved multiple stress tolerance.
Junming Zhao,Junming Zhao,Shuangrong Yuan,Man Zhou,Ning Yuan,Zhigang Li,Qian Hu,Frank Bethea,Haibo Liu,Shigui Li,Hong Luo +10 more
TL;DR: The results revealed the distinctive roles ofmiR393/target module in plant development and stress responses between creeping bentgrass and other annual species, suggesting that miR393 would be a promising candidate for generating superior crop cultivars with enhanced multiple stress tolerance, thus contributing to agricultural productivity.
References
More filters
Journal ArticleDOI
A review of the source, behaviour and distribution of arsenic in natural waters
TL;DR: The scale of the problem in terms of population exposed to high As concentrations is greatest in the Bengal Basin with more than 40 million people drinking water containing ‘excessive’ As as mentioned in this paper.
Book
Thermochemical data of pure substances
TL;DR: In this article, the first law of thermodynamics and the third law of Nernst heat theorem are used to construct tables of thermochemical data of pure substances, which are then used for thermodynamic calculations.
Book
Aqueous Environmental Geochemistry
TL;DR: The Geochemistry of Clay Minerals: Actinides and Their Daughter and Fission Products as mentioned in this paper, a book about the geochemistry of clay minerals, is a good starting point for this discussion.
Journal ArticleDOI
The Physiology of Metal Toxicity in Plants
TL;DR: Aluminum toxicity is discussed in this paper, including general effects (symptoms and physiological effects), differential aluminum tolerance in plants, beneficial effects of aluminum, and the genetic control of aluminum tolerance.
Journal ArticleDOI
Orogenic gold deposits : A proposed classification in the context of their crustal distribution and relationship to other gold deposit types
TL;DR: The orogenic gold deposits were formed during compressional to transpressional deformation processes at convergent plate margins in accretionary and collisional orogens as discussed by the authors, with gold deposition from 15-20 km to the near surface environment.