Chapter 3. Mineralogy of Amphiboles and 1:1 Layer Silicates

Veblen, David R.; Wylie, Ann G.

doi:10.1515/9781501509711-006

Cited by 60 publications

(56 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Olivine and orthopyroxene from the peridotite react mostly to serpentines when exposed to hydration by sea water that percolates the upper mantle. Serpentinite rocks contain veins and cracks that host different varieties of serpentine like lizardite, antigorite, chrysotile, carlosturanite, etc., often with brous habit (Veblen and Wylie, 1993;O'Hanley, 1996). Chrysotile asbestos corresponds to such vein lling when the chrysotile tubules can be easily detached from each other, and therefore may become dangerous when dispersed in the air and surface water.…”

Section: Mesoscale Self-organization Of Chrysotile In Serpentinite MImentioning

confidence: 99%

Microstructures of the silicates: key information about mineral reactions and a link with the Earth and materials sciences

Baronnet¹,

Belluso²

2002

Mineral. mag.

View full text Add to dashboard Cite

ABSTR ACTFrom a few examples, the first part of this paper discusses the use of transmission electron microscopy in characterizing arrested silicate reaction mechanisms in coherent rocks, including nucleation, crystal growth, and resorption events. Some attention is given to the role of reaction sites and strain. The second part of the paper addresses the wealth of mutual arrangement of serpentine tubules (chrysotile sl) found recently in serpentinite cracks, the result of hydration reactions. It is suggested that their great flexibility of association as fascinating mesostructures may indicate how veins formed and how they were filled. Micro-to nano-cracks might potentially serve as markers of brittle deformation in the submicron range, and therefore might document nanostructural geology. When possible the topological and self-assembly features observed for chrysotile are compared with those reported for graphene nanotubes.KEY WORDS: silicate reactions, microstructures, crystal growth, nanotube self-assembly, transmission electron microscopy.

show abstract

Section: Mesoscale Self-organization Of Chrysotile In Serpentinite MImentioning

confidence: 99%

Microstructures of the silicates: key information about mineral reactions and a link with the Earth and materials sciences

Baronnet¹,

Belluso²

2002

Mineral. mag.

View full text Add to dashboard Cite

show abstract

“…In antigorite, the misfit is compensated by an alternating-wave structure in which the sheet of octahedra is continuous, whereas the SiO 4 tetrahedra are tilted and periodically switch their orientation, pointing alternatively in opposite directions. Finally, chrysotile has a coiled structure, which is responsible for its properties as asbestos (Wicks & Whittaker 1975, Wicks & O'Hanley 1988, Veblen & Wylie 1993.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Chrysotile, Antigorite and Lizardite by Ft-Raman Spectroscopy

Rinaudo

Gastaldi

Belluso

2003

The Canadian Mineralogist

250

196

View full text Add to dashboard Cite

We analyzed samples of antigorite, lizardite and fibrous chrysotile, three representative minerals of the serpentine group, to determine their chemical and structural properties, and their FT-Raman spectra. The low-frequency region of the spectrum (1200-200 cm -1 ), which corresponds to the lattice-vibration modes, was then analyzed, and the observed bands attributed, on the basis of our results. Raman spectroscopy thus proves useful in identifying the three mineral species, despite their strong similarities in structure and chemical composition. The symmetric stretching modes of the Si-O b -Si linkages vibrate at different frequencies in chrysotile and antigorite, whereas chrysotile and lizardite can easily be identified by analyzing the vibrations of the OH-Mg-OH groups and the bands in the range 550-500 cm -1 .

show abstract

“…Whether or not the health hazards of these two types of amphiboles were the same as those of asbestos fibers was not clearly established. Of less concern was the presence of tremolite-actinolite fibers at that time little evidence of health effects existed and of least concern was hornblende which can form fibers but rarely, if ever, forms asbestos and other minerals commonly found in ambient air (Langer et al, 1979;Veblen and Wylie, 1993).…”

Section: Origin Of the Problemmentioning

confidence: 99%

“…The new evidence has been obtained from high-resolution transmission electron microscopy examination revealing unique structural properties of asbestos, experimental animal studies showing much lower risk for non-asbestos amphibole fibers compared with amphibole asbestos and epidemiological studies showing little or no increase in asbestos-related diseases among workers occupationally exposed to non-asbestos amphibole fibers Nolan et al, 1991;Veblen and Wylie, 1993;Ross et al, 1993;Ross and Nolan, 2003;Ilgren, 2004;Gamble and Gibbs, 2008).…”

Section: United States Consumer Product Safety Commission and The Occmentioning

confidence: 99%

Risk assessment due to environmental exposures to fibrous particulates associated with taconite ore

Wilson

McConnell

Ross

et al. 2008

Regulatory Toxicology and Pharmacology

View full text Add to dashboard Cite

Chapter 3. Mineralogy of Amphiboles and 1:1 Layer Silicates

Cited by 60 publications

References 0 publications

Microstructures of the silicates: key information about mineral reactions and a link with the Earth and materials sciences

Microstructures of the silicates: key information about mineral reactions and a link with the Earth and materials sciences

Characterization of Chrysotile, Antigorite and Lizardite by Ft-Raman Spectroscopy

Risk assessment due to environmental exposures to fibrous particulates associated with taconite ore

Contact Info

Product

Resources

About