Articles | Volume 36, issue 1
https://doi.org/10.5194/ejm-36-247-2024
https://doi.org/10.5194/ejm-36-247-2024
Research article
 | 
01 Mar 2024
Research article |  | 01 Mar 2024

Crystal chemistry and molar volume of potassic-chloro-hastingsite

Jared P. Matteucci, David M. Jenkins, and M. Darby Dyar

Related subject area

Crystal chemistry
Pilanesbergite: a new rock-forming mineral occurring in nepheline syenite from the Pilanesberg Alkaline Complex, South Africa
Fabrice Dal Bo, Henrik Friis, Marlina A. Elburg, Frédéric Hatert, and Tom Andersen
Eur. J. Mineral., 36, 73–85, https://doi.org/10.5194/ejm-36-73-2024,https://doi.org/10.5194/ejm-36-73-2024, 2024
Short summary
Thermodynamics of vivianite-group arsenates M3(AsO4)2 ⋅  8H2O (M is Ni, Co, Mg, Zn, Cu) and chemical variability in the natural arsenates of this group
Juraj Majzlan, Anna Reichstein, Patrick Haase, Martin Števko, Jiří Sejkora, and Edgar Dachs
Eur. J. Mineral., 36, 31–54, https://doi.org/10.5194/ejm-36-31-2024,https://doi.org/10.5194/ejm-36-31-2024, 2024
Short summary
Trace and ultratrace elements in spinel subgroup minerals of ultramafic rocks from the Voltri Massif (NW Italy): the influence of microstructure and texture
Silvia Fornasaro, Paola Comodi, Laura Crispini, Sandro Zappatore, Azzurra Zucchini, and Pietro Marescotti
Eur. J. Mineral., 35, 1091–1109, https://doi.org/10.5194/ejm-35-1091-2023,https://doi.org/10.5194/ejm-35-1091-2023, 2023
Short summary
Genetic model for the color anomalies at the termination of pegmatitic gem tourmaline crystals from the island of Elba, Italy
Alessandra Altieri, Federico Pezzotta, Giovanni B. Andreozzi, Henrik Skogby, and Ferdinando Bosi
Eur. J. Mineral., 35, 755–771, https://doi.org/10.5194/ejm-35-755-2023,https://doi.org/10.5194/ejm-35-755-2023, 2023
Short summary
Fe-bearing vanadium dioxide–paramontroseite: structural details and high-temperature transformation
Nadia Curetti and Alessandro Pavese
Eur. J. Mineral., 35, 373–382, https://doi.org/10.5194/ejm-35-373-2023,https://doi.org/10.5194/ejm-35-373-2023, 2023
Short summary

Cited articles

Angel, R. J.: High-pressure structure of anorthite, Am. Mineral., 73, 1114–1119, 1988. 
Barnes, J. D. and Cisneros, M.: Mineralogical control on the chlorine isotope composition of altered oceanic crust, Chem. Geol., 326–327, 51–60, 2012. 
Castelli, D.: Chlorpotassium ferro-pargasite from Sesia-Lanzo marbles (Western Italian Alps): a record of highly saline fluids, Soc. Italiana Mineral. Petrol., 43, 129–138, 1988. 
Cuadros, J., Michalski, J. R., Dyar, M. D., and Dekov, V.: Controls on tetrahedral Fe(III) abundance in 2:1 phyllosilicates, Am. Mineral., 104, 1608–1619, 2019. 
Driscall, J., Jenkins, D. M., Dyar, M. D., and Bozhilov, K. N.: Cation ordering in synthetic low-calcium actinolite, Am. Mineral., 90, 900–911, 2005. 
Download
Short summary
To explore the compositional constraints on Cl incorporation into amphiboles, which can be used to characterize transient brines, amphiboles were synthesized with a broad range of Cl concentrations. Amphibole Cl was found to be dependent on the Fe2+,3+ content, but not the tetrahedral Al content or K / Na ratio. Cl incorporation was found to contract the unit cell along a and expand it along b and c. Molar volumes were derived for endmember Cl-amphiboles using multivariate regressions.