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The hydration and alteration of perlite and rhyolite

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The hydration and alteration of perlite and rhyolite. / Denton, Jo S.; Tuffen, Hugh; Gilbert, Jennie S. et al.
In: Journal of the Geological Society, Vol. 166, No. 5, 09.2009, p. 895-904.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Denton, JS, Tuffen, H, Gilbert, JS & Odling, N 2009, 'The hydration and alteration of perlite and rhyolite', Journal of the Geological Society, vol. 166, no. 5, pp. 895-904. https://doi.org/10.1144/0016-76492008-007

APA

Denton, J. S., Tuffen, H., Gilbert, J. S., & Odling, N. (2009). The hydration and alteration of perlite and rhyolite. Journal of the Geological Society, 166(5), 895-904. https://doi.org/10.1144/0016-76492008-007

Vancouver

Denton JS, Tuffen H, Gilbert JS, Odling N. The hydration and alteration of perlite and rhyolite. Journal of the Geological Society. 2009 Sept;166(5):895-904. doi: 10.1144/0016-76492008-007

Author

Denton, Jo S. ; Tuffen, Hugh ; Gilbert, Jennie S. et al. / The hydration and alteration of perlite and rhyolite. In: Journal of the Geological Society. 2009 ; Vol. 166, No. 5. pp. 895-904.

Bibtex

@article{1e91e149d70541998292289e05a18a15,
title = "The hydration and alteration of perlite and rhyolite",
abstract = "The volatile concentrations and thermal characteristics of hydrothermally-altered rhyolitic deposits erupted under Icelandic glaciers have been studied by combined differential scanning calorimetry-thermogravimetric analysis-mass spectrometry (DSC-TGA-MS) and x-ray diffraction (XRD). Samples range from pristine obsidians through to strongly-perlitised and altered fragmental deposits. Four types of samples are determined to have notable differences in total volatile concentrations. These are: obsidians (0.44-3.04 wt. %); perlites (2.15-8.15 wt. %); obsidian-breccias (8.49-9.41 wt. %), and hyaloclastites (3.23-7.78 wt. %). DSC-TGA-MS and textural data indicate that the volatile concentration of the perlitic samples increases as the amount of perlitisation increases. XRD data show that the volatile-rich samples are rich in the low-temperature zeolite minerals heulandite and mordenite. The temperature at which volatile exsolution occurs is shown to decrease as the volatile concentration increases reflecting the speciation of water as well as zeolite mineral growth.",
author = "Denton, {Jo S.} and Hugh Tuffen and Gilbert, {Jennie S.} and N Odling",
year = "2009",
month = sep,
doi = "10.1144/0016-76492008-007",
language = "English",
volume = "166",
pages = "895--904",
journal = "Journal of the Geological Society",
issn = "0016-7649",
publisher = "Geological Society of London",
number = "5",

}

RIS

TY - JOUR

T1 - The hydration and alteration of perlite and rhyolite

AU - Denton, Jo S.

AU - Tuffen, Hugh

AU - Gilbert, Jennie S.

AU - Odling, N

PY - 2009/9

Y1 - 2009/9

N2 - The volatile concentrations and thermal characteristics of hydrothermally-altered rhyolitic deposits erupted under Icelandic glaciers have been studied by combined differential scanning calorimetry-thermogravimetric analysis-mass spectrometry (DSC-TGA-MS) and x-ray diffraction (XRD). Samples range from pristine obsidians through to strongly-perlitised and altered fragmental deposits. Four types of samples are determined to have notable differences in total volatile concentrations. These are: obsidians (0.44-3.04 wt. %); perlites (2.15-8.15 wt. %); obsidian-breccias (8.49-9.41 wt. %), and hyaloclastites (3.23-7.78 wt. %). DSC-TGA-MS and textural data indicate that the volatile concentration of the perlitic samples increases as the amount of perlitisation increases. XRD data show that the volatile-rich samples are rich in the low-temperature zeolite minerals heulandite and mordenite. The temperature at which volatile exsolution occurs is shown to decrease as the volatile concentration increases reflecting the speciation of water as well as zeolite mineral growth.

AB - The volatile concentrations and thermal characteristics of hydrothermally-altered rhyolitic deposits erupted under Icelandic glaciers have been studied by combined differential scanning calorimetry-thermogravimetric analysis-mass spectrometry (DSC-TGA-MS) and x-ray diffraction (XRD). Samples range from pristine obsidians through to strongly-perlitised and altered fragmental deposits. Four types of samples are determined to have notable differences in total volatile concentrations. These are: obsidians (0.44-3.04 wt. %); perlites (2.15-8.15 wt. %); obsidian-breccias (8.49-9.41 wt. %), and hyaloclastites (3.23-7.78 wt. %). DSC-TGA-MS and textural data indicate that the volatile concentration of the perlitic samples increases as the amount of perlitisation increases. XRD data show that the volatile-rich samples are rich in the low-temperature zeolite minerals heulandite and mordenite. The temperature at which volatile exsolution occurs is shown to decrease as the volatile concentration increases reflecting the speciation of water as well as zeolite mineral growth.

UR - http://www.scopus.com/inward/record.url?scp=69949107636&partnerID=8YFLogxK

U2 - 10.1144/0016-76492008-007

DO - 10.1144/0016-76492008-007

M3 - Journal article

VL - 166

SP - 895

EP - 904

JO - Journal of the Geological Society

JF - Journal of the Geological Society

SN - 0016-7649

IS - 5

ER -