Huneke, J. C. and Rossman, George R. (1978) Zircons of Summit Rock, Oregon. Mineralogical Record, 9 (6). pp. 392-393. ISSN 0026-4628. https://resolver.caltech.edu/CaltechAUTHORS:20130402-105154007
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Abstract
Crystals of a variety of minerals, including feldspars, pyroxenes, ilmenite, apatites and tridymite project into cavities in a basaltic andesite body at Summit Rock. Oregon. One widely distributed minor mineral occurs as individuals and clusters of pale pink crystals ranging up to 0.3 mm in length, and is notable for the diverse habits in which it is found. These crystals had previously been identified as rutile on the basis of morphology (Kleck, 1970) and are labeled as such in many micromount collections. However, our studies show that the mineral is actually zircon. This identification was obtained by energy dispersive X-ray analysis, which showed that zirconium and silicon were the only cations present as major constituents. Titanium in particular was absent. The infrared absorption pattern of a typical crystal confirmed that it is a nonmetamict zircon.
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Additional Information: | © 1978 The Mineralogical Record Inc. A portion of this study was funded by the National Science Foundation Grant EAR 77-23147. | ||||||
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Issue or Number: | 6 | ||||||
Record Number: | CaltechAUTHORS:20130402-105154007 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130402-105154007 | ||||||
Official Citation: | Huneke, J.C. & Rossman, G. R. (1978): Zircons of Summit Rock, Oregon. Mineralogical Record. 6, 392-393 | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 37720 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | Tony Diaz | ||||||
Deposited On: | 15 Apr 2013 18:14 | ||||||
Last Modified: | 26 Nov 2019 11:15 |
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