Next Article in Journal
Experimental Deployment of Microbial Mineral Carbonation at an Asbestos Mine: Potential Applications to Carbon Storage and Tailings Stabilization
Next Article in Special Issue
Silica Colloid Ordering in a Dynamic Sedimentary Environment
Previous Article in Journal
The Force of Crystallization and Fracture Propagation during In-Situ Carbonation of Peridotite
Previous Article in Special Issue
Mineralogy and Processing of Hydrothermal Vein Quartz from Hengche, Hubei Province (China)
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Minerals 2017, 7(10), 189; https://doi.org/10.3390/min7100189

Trace Element Compositions and Defect Structures of High-Purity Quartz from the Southern Ural Region, Russia

1
Institute of Mineralogy, TU Bergakademie Freiberg, Brennhausgasse 14, 09596 Freiberg, Germany
2
Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N5E2, Canada
3
Naturhistorisk Museum, Universitet i Oslo, P.O. Box 1172, Blindern, 0318 Oslo, Norway
4
Natural History Museum, Cromwell Road, London SW7 5BD, UK
5
Mining State University St. Petersburg, 21st Line, St. Petersburg 199106, Russia
*
Author to whom correspondence should be addressed.
Received: 14 September 2017 / Revised: 5 October 2017 / Accepted: 5 October 2017 / Published: 11 October 2017
(This article belongs to the Special Issue Mineralogy of Quartz and Silica Minerals)
Full-Text   |   PDF [34339 KB, uploaded 17 October 2017]   |  

Abstract

Quartz samples of different origin from 10 localities in the Southern Ural region, Russia have been investigated to characterize their trace element compositions and defect structures. The analytical combination of cathodoluminescence (CL) microscopy and spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, and trace-element analysis by inductively coupled plasma mass spectrometry (ICP-MS) revealed that almost all investigated quartz samples showed very low concentrations of trace elements (cumulative concentrations of <50 ppm with <30 ppm Al and <10 ppm Ti) and low abundances of paramagnetic defects, defining them economically as “high-purity” quartz (HPQ) suitable for high-tech applications. EPR and CL data confirmed the low abundances of substitutional Ti and Fe, and showed Al to be the only significant trace element structurally bound in the investigated quartz samples. CL microscopy revealed a heterogeneous distribution of luminescence centres (i.e., luminescence active trace elements such as Al) as well as features of deformation and recrystallization. It is suggested that healing of defects due to deformation-related recrystallization and reorganization processes of the quartz lattice during retrograde metamorphism resulted in low concentrations of CL activator and other trace elements or vacancies, and thus are the main driving processes for the formation of HPQ deposits in the investigated area. View Full-Text
Keywords: quartz; cathodoluminescence; electron paramagnetic resonance; trace elements quartz; cathodoluminescence; electron paramagnetic resonance; trace elements
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Götze, J.; Pan, Y.; Müller, A.; Kotova, E.L.; Cerin, D. Trace Element Compositions and Defect Structures of High-Purity Quartz from the Southern Ural Region, Russia. Minerals 2017, 7, 189.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Minerals EISSN 2075-163X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top