Intracrystalline diffusion in clinoptilolite: Implications for radionuclide isolation

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Experiments have been performed to measure the rate of exchange diffusion in the zeolite clinoptilolite (CL) for elements important to radionuclide isolation at Yucca Mountain, NV. Clinoptilolite is one of the major sorptive minerals in the tuffs at Yucca Mountain, and occurs both as a major component in zeolitized units (Calico Hills), and in fractures in non-zeolitized tuffs (Topopah Spring). Field evidence and numerical modeling suggests that the movement of fluids through the tuff rocks adjacent to the potential repository may occur via episodic flow through fractures. Under conditions of rapid fracture flow the effective sorptive capacity of fracture-lining clinoptilolite ... continued below

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3 p.

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Roberts, S.K.; Viani, B.E. & Phinney, D. November 16, 1995.

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Experiments have been performed to measure the rate of exchange diffusion in the zeolite clinoptilolite (CL) for elements important to radionuclide isolation at Yucca Mountain, NV. Clinoptilolite is one of the major sorptive minerals in the tuffs at Yucca Mountain, and occurs both as a major component in zeolitized units (Calico Hills), and in fractures in non-zeolitized tuffs (Topopah Spring). Field evidence and numerical modeling suggests that the movement of fluids through the tuff rocks adjacent to the potential repository may occur via episodic flow through fractures. Under conditions of rapid fracture flow the effective sorptive capacity of fracture-lining clinoptilolite may be controlled by exchange diffusion rather than exchange equilibrium.

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3 p.

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INIS; OSTI as DE96007697

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  • 7. annual international high-level radioactive waste management conference, Las Vegas, NV (United States), 29 Apr - 3 May 1996

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  • Other: DE96007697
  • Report No.: UCRL-JC--122735
  • Report No.: CONF-960421--13
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 205171
  • Archival Resource Key: ark:/67531/metadc671464

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  • November 16, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 17, 2016, 12:45 p.m.

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Roberts, S.K.; Viani, B.E. & Phinney, D. Intracrystalline diffusion in clinoptilolite: Implications for radionuclide isolation, article, November 16, 1995; California. (https://digital.library.unt.edu/ark:/67531/metadc671464/: accessed May 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.