Abstract
Equilibrium and dynamic crystallization experiments were used to determine distribution coefficients (D-values) for the REE and the trace elements Sc, V, Rb, Sr, Y, Zr, Nb, Ba, Hf, Th, and U between Ti-Al-clinopyroxene and melt. Equilibrium values for D correlate well with previous studies where values have been determined. The D-values were also studied as a function of cooling rate. Increased cooling rates produce higher growth rates. At growth rates that exceed the diffusion rates in the crystals, the D-values increase to near unity and the HREE D-values exceed unity only at the most rapid crystal growth rates. The increase in D-values is the result of the inclusion of components into the growing pyroxene from the boundary layer that develops at the crystal-melt interface because of the disparity between the growth and diffusion rates. The origin of sector zoning is best explained as an interplay of primarily crystallographic control with kinetic effects.
© 2015 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Orbicular oxides in carbonatitic kimberlites
- Fluid-mediated polymetamorphism related to Proterozoic collision of Archean Wyoming and Superior provinces in the Black Hills, South Dakota
- Lithium isotopic systematics of granites and pegmatites from the Black Hills, South Dakota
- Identifying the effects of petrologic processes in a closed basaltic system using trace- element concentrations in olivines and glasses: Implications for comparative planetology
- Tectonic implications of diverse igneous blocks in Franciscan mélange, Northern California and southwestern Oregon
- The petrogenesis of the Apollo 14 high-Al mare basalts
- Experimental insights on crystal chemistry of high-Ti garnets from garnet-melt partitioning of rare-earth and high-field-strength elements
- The atomic arrangement of merrillite from the Fra Mauro Formation, Apollo 14 lunar mission: The first structure of merrillite from the Moon
- The behavior of Li and B in lunar mare basalts during crystallization, shock, and thermal metamorphism: Implications for volatile element contents of martian basalts
- Pyroxene europium valence oxybarometer: Effects of pyroxene composition, melt composition, and crystallization kinetics
- Comparative planetary mineralogy: Pyroxene major- and minor-element chemistry and partitioning of vanadium between pyroxene and melt in planetary basalts
- Crystal chemistry of lunar merrillite and comparison to other meteoritic and planetary suites of whitlockite and merrillite
- An experimental study of trace-element partitioning between Ti-Al-clinopyroxene and melt: Equilibrium and kinetic effects including sector zoning
- Minor- and trace-element sector zoning in synthetic enstatite
- Insights into the redox history of the NWA 1068/1110 martian basalt from mineral equilibria and vanadium oxybarometry
- Transformations of Mg- and Ca-sulfate hydrates in Mars regolith
- An experimental study of the oxidation state of vanadium in spinel and basaltic melt with implications for the origin of planetary basalt
- Valence state partitioning of vanadium between olivine-liquid: Estimates of the oxygen fugacity of Y980459 and application to other olivine-phyric martian basalts
- Identification of relict forsterite grains in forsterite-rich chondrules from the Mokoia CV3 carbonaceous chondrite
- Formation of spinel-, hibonite-rich inclusions found in CM2 carbonaceous chondrites
- Deep metastable eutectic condensation in Al-Fe-SiO-H2-O2 vapors: Implications for natural Fe-aluminosilicates
- α-PbO2-type nanophase of TiO2 from coesite-bearing eclogite in the Dabie Mountains, China–Comment
- α-PbO2-type nanophase of TiO2 from coesite-bearing eclogite in the Dabie Mountains, China–Reply
- Rietveld structure refinement of perovskite and post-perovskite phases of NaMgF3 (Neighborite) at high pressures
- Letter. Si vacancies in the 10-Å phase
Articles in the same Issue
- Orbicular oxides in carbonatitic kimberlites
- Fluid-mediated polymetamorphism related to Proterozoic collision of Archean Wyoming and Superior provinces in the Black Hills, South Dakota
- Lithium isotopic systematics of granites and pegmatites from the Black Hills, South Dakota
- Identifying the effects of petrologic processes in a closed basaltic system using trace- element concentrations in olivines and glasses: Implications for comparative planetology
- Tectonic implications of diverse igneous blocks in Franciscan mélange, Northern California and southwestern Oregon
- The petrogenesis of the Apollo 14 high-Al mare basalts
- Experimental insights on crystal chemistry of high-Ti garnets from garnet-melt partitioning of rare-earth and high-field-strength elements
- The atomic arrangement of merrillite from the Fra Mauro Formation, Apollo 14 lunar mission: The first structure of merrillite from the Moon
- The behavior of Li and B in lunar mare basalts during crystallization, shock, and thermal metamorphism: Implications for volatile element contents of martian basalts
- Pyroxene europium valence oxybarometer: Effects of pyroxene composition, melt composition, and crystallization kinetics
- Comparative planetary mineralogy: Pyroxene major- and minor-element chemistry and partitioning of vanadium between pyroxene and melt in planetary basalts
- Crystal chemistry of lunar merrillite and comparison to other meteoritic and planetary suites of whitlockite and merrillite
- An experimental study of trace-element partitioning between Ti-Al-clinopyroxene and melt: Equilibrium and kinetic effects including sector zoning
- Minor- and trace-element sector zoning in synthetic enstatite
- Insights into the redox history of the NWA 1068/1110 martian basalt from mineral equilibria and vanadium oxybarometry
- Transformations of Mg- and Ca-sulfate hydrates in Mars regolith
- An experimental study of the oxidation state of vanadium in spinel and basaltic melt with implications for the origin of planetary basalt
- Valence state partitioning of vanadium between olivine-liquid: Estimates of the oxygen fugacity of Y980459 and application to other olivine-phyric martian basalts
- Identification of relict forsterite grains in forsterite-rich chondrules from the Mokoia CV3 carbonaceous chondrite
- Formation of spinel-, hibonite-rich inclusions found in CM2 carbonaceous chondrites
- Deep metastable eutectic condensation in Al-Fe-SiO-H2-O2 vapors: Implications for natural Fe-aluminosilicates
- α-PbO2-type nanophase of TiO2 from coesite-bearing eclogite in the Dabie Mountains, China–Comment
- α-PbO2-type nanophase of TiO2 from coesite-bearing eclogite in the Dabie Mountains, China–Reply
- Rietveld structure refinement of perovskite and post-perovskite phases of NaMgF3 (Neighborite) at high pressures
- Letter. Si vacancies in the 10-Å phase