Environmental Mineralogy&lt;subtitle&gt;Microbial Interactions, Anthropogenic Influences, Contaminated Land and Waste Management&lt;/subtitle&gt;

Cotter-Howells, Janet; Campbell, Linda; Valsami-Jones, Eugénia; Batchelder, M.

doi:10.1180/mss.9

Cited by 14 publications

(2 citation statements)

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“…Supergene materials from sulphide mineral oxidation have great relevance in environmental mineralogy, concerning their role controlling pollutants in contaminated environments (Cotter-4 Howells et al, 2000;Hochella, 2002;Vaughan et al, 2002). Both, metal soluble-sulphates, occurring as efflorescences, and iron (III)-minerals that form ochre precipitates, are keyexamples of environmental minerals in the acceptation given by Valsami-Jones (2000).…”

Section: Introductionmentioning

confidence: 99%

Occurrence, properties and pollution potential of environmental minerals in acid mine drainage

Valente

Gomes

2009

Science of The Total Environment

133

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This paper describes the occurrences, the mineralogical assemblages and the environmental relevance of the AMD-precipitates from the abandoned mine of Valdarcas, Northern Portugal. At this mining site, these precipitates are particularly related with the chemical speciation of iron, which is in according to the abundance of mine wastes enriched in pyrrhotite and pyrite. The more relevant supergene mineralogical assemblages include the following environmental minerals: soluble metal-salts, mainly sulphates, revealing seasonal behaviour, iron-hydroxysulphates and iron-oxyhydroxides, both forming ochre precipitates of poorly and well-crystalline minerals. Pollution potential of the most highly water soluble salts was analysed in order to evaluate the environmental effect of their dissolution by rainfall. Laboratory experiments, carried out with iron and aluminium sulphates, demonstrated the facility to release metals, sulphate and acidity upon dissolution. Regarding the ochre precipitates, composed by several less soluble iron (III)-minerals, the spatial distribution on the nearby aqueous system as well as the proportion of Jarosite, Schwertmannite and Goethite in the mixtures gave information about the halo's contamination promoted by the AMD emerging from the waste-dumps.

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Section: Introductionmentioning

confidence: 99%

Occurrence, properties and pollution potential of environmental minerals in acid mine drainage

Valente

Gomes

2009

Science of The Total Environment

133

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“…Furthermore, the interactions that take place between a wide range of lithobiontic organisms and the bedrock‐forming mineral surfaces are of significant interest in fields such as botany, microbiology, architecture, archaeology and geology (e.g. Lee, 2000; Cotter‐Howells et al. , 2000; Allsopp et al.…”

Section: Introductionmentioning

confidence: 99%

Seaweed attachment to bedrock: biophysical evidence for a new geophycology paradigm

et al. 2009

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Seaweeds are amongst the most obvious and ecologically important components of rocky shore communities worldwide but until now little has been known about the processes involved in their attachment. This multidisciplinary study investigated for the first time the interactions between marine macroalgal holdfasts and their underlying substrata, requiring the development of specialized sample preparation techniques to maintain the structural integrity of the holdfast-bedrock interface. Transmitted plane polarized light microscopy, scanning electron microscopy with energy dispersive spectroscopy and structured light illumination microscopy were used in the examination of the interface between Ascophyllum nodosum (Fucales, Heterokontophyta) and crustose red algae Lithothamnion sp. (Corallinales, Rhodophyta) on granite and limestone substrates. The new evidence presented here represents a paradigm shift in the way we view seaweed attachment because results show that the holdfasts exploit the physical characteristics of the rock-forming minerals in order to penetrate the bedrock and thus facilitate the attachment process. Mineral cleavage planes together with intercrystalline and intracrystalline boundaries and fractures provide penetration pathways for the holdfast tissue. This process causes disaggregation of rock-forming minerals to depths <10 mm and therefore assists in the bioerosion of coastal bedrock. It is concluded that seaweeds are able to cause weathering of natural rock and the term 'geophycology' is introduced to describe seaweed-bedrock interactions, including seaweed-induced weathering.

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Methods for Characterizing the Geochemical and Microbiological Conditions

Altfelder

Birke

Dohrmann

et al. 2007

Environmental Geology

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Environmental Mineralogy<subtitle>Microbial Interactions, Anthropogenic Influences, Contaminated Land and Waste Management</subtitle>

Cited by 14 publications

References 0 publications

Occurrence, properties and pollution potential of environmental minerals in acid mine drainage

Occurrence, properties and pollution potential of environmental minerals in acid mine drainage

Seaweed attachment to bedrock: biophysical evidence for a new geophycology paradigm

Methods for Characterizing the Geochemical and Microbiological Conditions

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