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The direction of flow of mineralizing solutions

Engel, A. E. J. (1948) The direction of flow of mineralizing solutions. Economic Geology, 43 (8). pp. 655-660. ISSN 1554-0774. doi:10.2113/gsecongeo.43.8.655.

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Several important questions and apparent contradictions have arisen where asymmetric features of quartz crystals and their partial encrustations have been used to determine the direction of flow of mineralizing solutions.On most of the asymmetric quartz crystals in steeply dipping veins in Arkansas, Bolivia, and apparently, in Brazil, the smaller rhombohedral faces and associated encrustations face upward. Many of these crystals also exhibit well defined discordances in growth habits, as reflected by phantom growth zones. The mutual and spatial relations of these and other features which have been employed as criteria to indicate the direction of flow of mineralizing solutions in deposits of hypogene origin cannot be reconciled readily with the interpretation suggested by Newhouse and others.An alternative explanation, that the smaller rhombohedral faces occupy the downstream side of the crystal, seems more plausible. Careful studies of much more data are needed, however, before an adequate analysis is possible of the various problems involved.

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Additional Information:© 1948 Society of Economic Geologists, Inc. May 25, 1948.
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Caltech Division of Geological Sciences471
Issue or Number:8
Record Number:CaltechAUTHORS:20220328-965920900
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Official Citation:Albert Edward John Engel; The direction of flow of mineralizing solutions. Economic Geology 1948; 43 (8): 655–660. doi:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114097
Deposited By: Tony Diaz
Deposited On:28 Mar 2022 17:32
Last Modified:28 Mar 2022 17:32

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