Mineralogical textural and compositional data on the alteration of basaltic glass from Kilauea, Hawaii to 300 degrees C: Insights to the corrosion of a borosilicate glass waste-form. [Yucca Mountain Project]
Mineralogical, textural and compositional data accompanying greenschist facies metamorphism (to 300{degrees}C) of basalts of the East Rift Zone (ERZ), Kilauea, Hawaii may be evaluated relative to published and experimental results for the surface corrosion of borosilicate glass. The ERZ alteration sequence is dominated by intermittent palagonite, interlayered smectite-chlorite, chlorite, and actinolite-epidote-anhydrite. Alteration is best developed in fractures and vesicles where surface reaction layers root on the glass matrix forming rinds in excess of 100 microns thick. Fractures control fluid circulation and the alteration sequence. Proximal to the glass surface, palagonite, Fe-Ti oxides and clays replace fresh glass as the surface reaction layer migrates inwards; away from the surface, amphibole, anhydrite, quartz and calcite crystallize from hydrothermal fluids in contact with the glass. The texture and composition of basaltic glass surfaces are similar to those of a SRL-165 glass leached statically for sixty days at 150 {degrees}C. While the ERZ reservoir is a complex open system, conservative comparisons between the alteration of ERZ and synthetic borosilicate glass are warranted. 31 refs., 2 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6020037
- Report Number(s):
- UCRL-JC-103739; CONF-901105-122; ON: DE91012031
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (USA), 24 Nov - 1 Dec 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
BASALT
MINERALOGY
BOROSILICATE GLASS
CORROSION
DISSOLUTION
WASTE FORMS
UNDERGROUND DISPOSAL
AMPHIBOLE
CHEMICAL COMPOSITION
CHLORITE MINERALS
CLAYS
CRYSTAL STRUCTURE
DEPOSITION
EROSION
FRACTURES
FUNCTIONAL MODELS
GEOCHEMISTRY
HAWAII
KILAUEA VOLCANO
LAYERS
MICROSTRUCTURE
PHASE STUDIES
PRECIPITATION
SMECTITE
TEXTURE
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHEMICAL REACTIONS
CHEMISTRY
FAILURES
FEDERAL REGION IX
GLASS
IGNEOUS ROCKS
MANAGEMENT
MINERALS
NORTH AMERICA
OXYGEN COMPOUNDS
ROCKS
SEPARATION PROCESSES
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
USA
VOLCANIC ROCKS
VOLCANOES
WASTE DISPOSAL
WASTE MANAGEMENT
052002* - Nuclear Fuels- Waste Disposal & Storage
360604 - Materials- Corrosion
Erosion
& Degradation
360602 - Other Materials- Structure & Phase Studies