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Hydrothermal decomposition curves and thermodynamic data for spherocobaltite (CoCO (sub 3) ) and gaspeite (NiCO (sub 3) )
Jalees A. K. Tareen, Ali R. Fazeli, B. Basavalingu and Giridhar T. Bhandage
Hydrothermal decomposition curves and thermodynamic data for spherocobaltite (CoCO (sub 3) ) and gaspeite (NiCO (sub 3) )
European Journal of Mineralogy (June 1991) 3 (3): 501-505
Hydrothermal decomposition curves and thermodynamic data for spherocobaltite (CoCO (sub 3) ) and gaspeite (NiCO (sub 3) )
European Journal of Mineralogy (June 1991) 3 (3): 501-505
Index Terms/Descriptors
Abstract
Equilibrium curves have been obtained for the decomposition of CoCO (sub 3) and NiCO (sub 3) to their respective oxides + CO (sub 2) in the P range 300-2000 bar and T < 700 degrees C under XCO (sub 2) approx 0.5. Reversed phase equilibrium runs were performed at selected P-T values and the thermodynamic data for enthalpies of formation and standard free energies of formation are: CoCO (sub 3) DELTA H degrees f = -732.211 +- 3.10, DELTA G degrees f = - 657.266 +- 3.10 kJ/mol; NiCO (sub 3) DELTA H degrees f = -703.380 +- 1.24, DELTA G degrees f = -628.359 +- 1.24 kJ/mol.
ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 3
Serial Issue: 3
Title: Hydrothermal decomposition curves and thermodynamic data for spherocobaltite (CoCO (sub 3) ) and gaspeite (NiCO (sub 3) )
Affiliation: Univ. Mysore, Dep. Geol.,
Mysore,
India
Pages: 501-505
Published: 199106
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller),
Stuttgart,
Federal Republic of Germany
References: 7
DOI:
10.1127/ejm/3/3/0501
Accession Number: 1993-042677
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 3 tables
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom. Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe, Hanover, Germany
Update Code: 1993
