Publications

@article{gonzalez_first_2024,

title = {First evaluation of stiff-in-soft host–inclusion systems: experimental synthesis of zircon inclusions in quartz crystals},

author = {Joseph P. Gonzalez and Jay B. Thomas and Mattia L. Mazzucchelli and Ross J. Angel and Matteo Alvaro},

url = {https://link.springer.com/10.1007/s00410-023-02081-1},

doi = {10.1007/s00410-023-02081-1},

issn = {0010-7999, 1432-0967},

year  = {2024},

date = {2024-02-01},

urldate = {2024-02-01},

journal = {Contributions to Mineralogy and Petrology},

volume = {179},

number = {2},

pages = {13},

abstract = {Quartz crystals with zircon inclusions were synthesized using a piston-cylinder apparatus to experimentally evaluate the use of inclusions in “soft” host minerals for elastic thermobarometry. Synthesized zircon inclusion strains and, therefore, pressures (Pinc) were measured using Raman spectroscopy and then compared with the expected inclusion strains and pressures calculated from elastic models. Measured inclusion strains and inclusion pressures are systematically more tensile than the expected values and, thus, re-calculated entrapment pressures are overestimated. These discrepancies are not caused by analytical biases or assumptions in the elastic models and strain calculations. Analysis shows that inclusion strain discrepancies progressively decrease with decreasing experimental temperature in the α-quartz field. This behavior is consistent with inelastic deformation of the host–inclusion pairs induced by the development of large differential stresses during experimental cooling. Therefore, inclusion strains are more reliable for inclusions trapped at lower temperature conditions in the α-quartz field where there is less inelastic deformation of the host–inclusion systems. On the other hand, entrapment isomekes of zircon inclusions entrapped in the β-quartz stability field plot along the α–β quartz phase boundary, suggesting that the inclusion strains were mechanically reset at the phase boundary during experimental cooling and decompression. Therefore, inclusions contained in soft host minerals can be used for elastic thermobarometry and inclusions contained in β-quartz may provide constraints on the P–T at which the host–inclusion system crossed the phase boundary during exhumation.},

keywords = {Elastic thermobarometry, Elasticity, Experiments, high-pressure, high-temperature, Quartz, Raman thermobarometry, Zircon},

pubstate = {published},

tppubtype = {article}

}

@article{Milani2017,

title = {Thermo-elastic behavior of grossular garnet at high pressures and temperatures},

author = {S. Milani and Ross John Angel and L. Scandolo and M. L. Mazzucchelli and T. B. Ballaran and S. Klemme and M. C. Domeneghetti and R. Miletich and K. S. Scheidl and M. Derzsi and K. Tokár and M. Prencipe and M. Alvaro and F. Nestola},

url = {https://doi.org/10.2138/am-2017-5855},

doi = {10.2138/am-2017-5855},

issn = {19453027},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

journal = {American Mineralogist},

volume = {102},

number = {4},

pages = {851--859},

abstract = {© 2017 by Walter de Gruyter Berlin/Boston 2017. The thermo-elastic behavior of synthetic single crystals of grossular garnet (Ca 3 Al 2 Si 3 O 12 ) has been studied in situ as a function of pressure and temperature separately. The same data collection protocol has been adopted to collect both the pressure-volume (P-V) and temperature-volume (T-V) data sets to make the measurements consistent with one another. The consistency between the two data sets allows simultaneous fitting to a single pressure-volume-temperature Equation of State (EoS), which was performed with a new fitting utility implemented in the latest version of the program EoSFit7c. The new utility performs fully weighted simultaneous fits of the P-V-T and P-K-T data using a thermal pressure EoS combined with any P-V EoS. Simultaneous refinement of our P-V-T data combined with that of K T as a function of T allowed us to produce a single P-V-T-K T equation of state with the following coefficients: V 0 =1664.46(5)Å 3 K TO =166.57(17)GPa and K′=4.96(7)α (300K,1bar) =2.09(2)×10 -5 K -1 with a refined Einstein temperature (θ E ) of 512 K for a Holland-Powell-type thermal pressure model and a Tait third-order EoS. Additionally, thermodynamic properties of grossular have been calculated for the first time from crystal Helmholtz and Gibbs energies, including the contribution from phonons, using density functional theory within the framework of the quasi-harmonic approximation.},

keywords = {ab-initio, Density Functional Theory, DFT, Elastic thermobarometry, equations of state, high-pressure, high-temperature, thermal expansion, thermodynamics},

pubstate = {published},

tppubtype = {article}

}