Leaching and differential recrystallization of metamict zircon under experimental hydrothermal conditions

Leaching and differential recrystallization of metamict zircon under experimental hydrothermal conditions

We report results of hydrothermal experiments on four alluvial zircons from Sri Lanka, which cover a wide range of radiation damage, at 450 degreesC and 1.3 kbar for 744 h with 2 M CaCl2 solution as reactive fluid. After the hydrothermal treatment, the most metamict samples show micrometer-thick rea...

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Veröffentlicht in:Contributions to mineralogy and petrology 2001-04, Vol.141 (1), p.53-65
Hauptverfasser: Geisler, Thorsten, Ulonska, Marcus, Schleicher, Helmut, Pidgeon, Robert T., van Bronswijk, Wilhelm
Format: Artikel
Sprache:eng
Schlagworte:
Calcium chloride
Chemical reactions
Crystallography
Experiments
Leaching
Mineralogy
Minerals
Petrology
Radiation
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Zusammenfassung:We report results of hydrothermal experiments on four alluvial zircons from Sri Lanka, which cover a wide range of radiation damage, at 450 degreesC and 1.3 kbar for 744 h with 2 M CaCl2 solution as reactive fluid. After the hydrothermal treatment, the most metamict samples show micrometer-thick reaction rims, which surround apparently unreacted ziecon, as revealed by cathodoluminescence (CL) and Nomarski differential interference contrast (NDIC) images.
ISSN:0010-7999
1432-0967
DOI:10.1007/s004100000202