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Infrared Spectroscopy of Quartz and Feldspar in Alpine Hydrothermal Veins
With the aim of discerning fluid conditions present during hydrothermal activity associated with Alpine metamorphism, we present new results on the abundance and distribution of hydrous impurities in co-crystallizing ...
Schematic Illustrations of Evolving Tholeiitic and Calc-Alkaline Magmatic Systems: New Models
The dramatic contrast in the geochemical evolution of tholeiitic and calc-alkaline magmatic systems has remained an enigma since their original characterization nearly a century ago. Recently, two new models that describe ...
Competing Diffusion Pathways in High-Temperature Metamorphic Quartz
We present spectroscopic analyses that characterize the distribution and abundance of hydroxyl-bearing impurities within a single quartz crystal grown in hydrothermal fluid. We focus on a gemmy quartz crystal collected in ...