Melt densities in the Na sub 2 O-FeO-Fe sub 2 O sub 3 -SiO sub 2 system and the partial molar volume of tetrahedrally-coordinated ferric iron in silicate melts

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · Geochimica et Cosmochimica Acta; (USA)

DOI:https://doi.org/10.1016/0016-7037(88)90305-5· OSTI ID:5254633

Dingwell, D B ^[1]; Brearley, M ^[2]; Dickinson, Jr, J E ^[3]

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1. Universitaet Bayreuth (West Germany)
2. Univ. of California, Los Angeles (USA)
3. Corning Glass Works, NY (USA)

The densities of 12 melts in the Na{sub 2}O-FeO-Fe{sub 2}O{sub 3}-SiO{sub 2} system have been determined in equilibrium with air, in the temperature range of 1,000-1,500{degree}C, using the double bob, Archimedean technique. Ferrous iron determinations of 100-200 mg samples, dip quenched from high temperature, indicate that all the melts investigated were highly oxidized under these experimental conditions. {sup 57}Fe Moessbauer spectra of glasses obtained by drop quenching 80 mg melt samples from loop equilibration runs yield Fe{sup 3+}/Fe{sup 2+} data equivalent to that for the densitometry (dip) samples for all but the most viscous melt, and confirm that all but one melt equilibrated with air during the densitometry measurements.

• OSTI ID: 5254633
• Journal Information: Geochimica et Cosmochimica Acta; (USA), Journal Name: Geochimica et Cosmochimica Acta; (USA) Vol. 52:10; ISSN GCACA; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CRYSTAL STRUCTURE
DENSITY
EQUILIBRIUM
GEOCHEMISTRY
IGNEOUS ROCKS
IRON COMPOUNDS
MAGMA
MAGMATISM
MINERALS
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROGENESIS
PHYSICAL PROPERTIES
QUENCHING
REDOX REACTIONS
ROCKS
SILICA
SILICATE MINERALS
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
STRUCTURAL CHEMICAL ANALYSIS
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS