Acid Etching in the Study of Limestones and Dolomites (Classic Reprint)
Language: English
Published by Forgotten Books, 2018
- Softcover
- New
Seller: Majestic Books, Hounslow, United KingdomMajestic Books
AbeBooks seller since January 19, 2007
Condition: New
£ 14.72
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- Title
- Acid Etching in the Study of Limestones and Dolomites (Classic Reprint)
- Author
- John Everts Lamar
- Publisher
- Forgotten Books
- Publication year
- 2018
- Condition
- New
- Binding
- Soft cover
- Language
- English
- ISBN 10
- 1528416457
- ISBN 13
- 9781528416450
An etching test is made as follows: A plane or nearly plane surface is prepared on the specimen of calcareous rock to be studied. The specimen is placed in a flat bottomed glass or other acid-proof container with the plane surface in such a position that it will approximately parallel the sur face of the acid to be added. Acid is added until the specimen is submerged to a depth of inch or more. The reaction is allowed to proceed for a brief period. The specimen is then removed from the acid, washed thoroughly but gently, allowed to dry, and suitably examined.
The specimen is placed with its plane surface approximately parallel to the sur face of the acid in order to obtain uniform etching conditions. Inclined surfaces of specimens, especially limestone specimens, are apt to become mildly corrugated by localized rising streams of carbon dioxide bubbles which cause more rapid circulation of acid along their paths and thus produce greater local solution. Corrugation of the plane surface is undesirable as it may in some cases be confused with other significant etching phenomena.
A good way to prepare a specimen is to saw or grind it so that it has two essentially parallel flat surfaces and thus may be easily placed with a flat surface parallel to the surface of the acid. If this is not feasible, one surface of a specimen may be ground or sawed flat and the specimen then sup ported with modeling clay or propped up with pieces of insoluble materials so that the flat surface is level. The flat surface should be finished by grinding with no. 600 carborundum or some other fine abrasive to make it scratch-free; hones may also be used. Samples should be thoroughly scrubbed after grinding in order to eliminate particles of abrasive.
For rough and rapid work, etching of fracture surfaces may prove satisfactory if the rock being studied breaks with relatively smooth and flat surfaces.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Majestic Books
Hounslow, United Kingdom
AbeBooks seller since January 19, 2007
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