Correlation of Mg/Fe partitioning between garnet and biotite with /sup 18/O//sup 16/O partitioning between quartz and magnetite

Journal Article · Wed Jun 01 00:00:00 EDT 1977 · Am. J. Sci.; (United States)

DOI:https://doi.org/10.2475/ajs.277.6.750· OSTI ID:7284056

Goldman, D S; Albee, A L

Isotopic and chemical data for thirteen metamorphic rocks containing garnet and biotite are used to investigate the dependence of the Mg--Fe partition upon temperature, expressed as the /sup 18/O//sup 16/O fractionation between quartz and magnetite, and upon chemical variation in both phases. Additional sets of samples considered to have equilibrated at nearly the same temperature are utilized to improve the least-squares solution of the compositional coefficients. The most acceptable least-squares solution, using the singular-value decomposition algorithm, is: K/sub D//sup Mg-Fe//sub G-B/ = -0.177(+-0.010)1000 ln/sub ..cap alpha..//sup Q//sub M/ - 1.22(+-0.14)X/sup G//sub Mn/ - 2.14(+- 0.13)X/sup G//sub Ca/ + 1.40(+- 0.09)X/sup B//sub Fe/ + 0.942(+- 0.109)X/sup B//sub Ti/ - 1.59(+- 0.21)X/sup B//sub Al/sup vi// - 0.492(+- 0.068). K/sub D/ is primarily dependent upon temperature but is also dependent upon compositional variation, particularly upon X/sup B//sub Fe/, although X/sup G//sub Ca/ becomes significant at higher concentrations.

• Research Organization: California Inst. of Tech., Pasadena
• OSTI ID: 7284056
• Journal Information: Am. J. Sci.; (United States), Vol. 277:6
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
BIOTITE
CHEMICAL COMPOSITION
GARNETS
IRON
PARTITION
MAGNESIUM
MAGNETITE
OXYGEN 16
ISOTOPE RATIO
OXYGEN 18
QUARTZ
GEOTHERMOMETRY
METAMORPHIC ROCKS
TEMPERATURE DEPENDENCE
ALKALINE EARTH METALS
CHALCOGENIDES
ELEMENTS
EVEN-EVEN NUCLEI
IRON COMPOUNDS
IRON ORES
IRON OXIDES
ISOTOPES
LIGHT NUCLEI
METALS
MICA
MINERALS
NUCLEI
ORES
OXIDES
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
ROCKS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
152004* - Geothermal Data & Theory- Isotope & Trace Element Studies