Browsing CERCA by Subject "Quartz crystals"
Now showing items 1-7 of 7
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3-Dimensional Mapping of Hydrous Impurities in a Single Quartz Crystal Sampled at Windgallenhutte, Switzerland
(2014-04)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 ... -
Chemical Fingerprint of Quartz Crystals Sampled Across the Lepontine Zone in the Swiss Alps
(2013-05)Quartz crystals record the evolution of hydrothermal fluid systems that accompanied the uplift of the Swiss Alps. Crystals from twenty localities were collected along a geologic traverse across four distinct temperature ... -
Chemical Fingerprint of Quartz Crystals Sampled at Windgallenhutte, Switzerland
(2013-05)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. ... -
Competing Diffusion Pathways in High-Temperature Metamorphic Quartz
(2018-03-05)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 ... -
The Distribution of Hydrous Impurities in Quartz : The Role of Twinning
(2018-04)Quartz crystals have been studied since ancient times by scientists and natural philosophers attempting to unlock the mysteries behind their aesthetic appearance and cryptic morphological properties. Previous studies ... -
How Fast Did That Crystal Grow? Quantifying the Growth Rate of Natural Quartz Crystals
(2010-04)Circulation of hydrothermal fluids controls the timescales of cooling in the Earth's crust and allows for large-scale exchange of matter between different levels of the crust. The time required to grow quartz crystals ... -
Rhombohedral vs. Prism Sector Zones in Hydrothermal Quartz Crystals : Implications for Growth Dynamics
(2019-05)Gemmy hydrothermal quartz crystals typically exhibit each of their six prism and six rhombohedral crystal faces. However, discerning which of the crystal faces were actively growing at any given time during construction ...