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]

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6020037

Smith, D K

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: DOE; 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
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360604 -- Materials-- Corrosion
Erosion
& Degradation
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
AMPHIBOLE
BASALT
BOROSILICATE GLASS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMISTRY
CHLORITE MINERALS
CLAYS
CORROSION
CRYSTAL STRUCTURE
DEPOSITION
DISSOLUTION
EROSION
FAILURES
FEDERAL REGION IX
FRACTURES
FUNCTIONAL MODELS
GEOCHEMISTRY
GLASS
HAWAII
IGNEOUS ROCKS
KILAUEA VOLCANO
LAYERS
MANAGEMENT
MICROSTRUCTURE
MINERALOGY
MINERALS
NORTH AMERICA
OXYGEN COMPOUNDS
PHASE STUDIES
PRECIPITATION
ROCKS
SEPARATION PROCESSES
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SMECTITE
TEXTURE
UNDERGROUND DISPOSAL
USA
VOLCANIC ROCKS
VOLCANOES
WASTE DISPOSAL
WASTE FORMS
WASTE MANAGEMENT