Now showing items 1-10 of 15
Structural Properties of Halo-acetonitrile-BCI[subscript]3 Complexes via Computations and Low-temperature IR Spectroscopy
The purpose of this study was to explore the effects of bulk, condensed-phase media on the structural properties of haloacetonitrile-boron trichloride complexes, using both computations and low-temperature infrared spectroscopy.
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 ...
Condensed-Phase Effects on the Structural Properties of FCH[subscript]2CN-BF[subscript]3 and CICH[subscript]2CN-BF[subscript]3
The purpose of this study was to assess the degree to which bulk, condensed-phase environments affect the structural properties of FCH[subscript]2CN-BF[subscript]3 and CICH[subscript]2CN-BF[subscript]3, using both ...
3-Dimensional Mapping of Hydrous Impurities in a Single Quartz Crystal Sampled at Windgallenhutte, Switzerland
The spatial distribution of chemical impurities in gemmy quartz reveals the thermal evolution of their host hydrothermal fluids and documents syn- and post-crystallization chemical diffusion. The purpose of this study was ...
Water Speciation Around Vesicles within Obsidian Fragments from Mono Craters, CA : Testing the 'Bubble Geobarometer'
Obsidian glasses preserve textural evidence that multiple cycles of fragmentation and annealing occurred within magmatic conduits prior to eruption. The nature and timescales of these processes are poorly understood. ...
Water in Hydrothermal Feldspar
Feldspar is the most common mineral in the Earth's crust, and although water is present in only trace amounts (~ hundreds of ppm), this quantity is sufficient to make crustal feldspar one of, if not the, largest reservoir ...
Chemical Diffusion in Watermelon Tourmaline : Parallel Versus Perpendicular to C-axis
The chemical composition of tourmaline can provide unique insights into the thermal evolution of their growth environment, including that of pegmatites (in igneous systems) and hydrothermal veins (in metamorphic systems). ...
Chemical Fingerprint of Quartz Crystals Sampled at Windgallenhutte, Switzerland
The spatial distribution of chemical impurities in hydrothermal quartz crystals documents the evolution of their host hydrothermal fluids and offers potential insights into their post-crystallization thermal histories. ...
Color in Watermelon Tourmaline : The Role of Hydroxyl Diffusion
Tourmaline is a semiprecious gemstone known in the geologic community known for its complex chemical formula. This is because the crystal structure of tourmaline can incorporate and contain numerous elements from the ...
Preliminary Characterization of Native American Glass Beads Using IR Spectroscopy
We present preliminary results on the nature of dissolved water in glass beads to Native American connections with early European traders and explorers. Our study involves the first investigation of these glass artifacts ...