Corundum Deposits of Montana
Author: Stephen Edmund Clabaugh
Publisher:
Published: 1952
Total Pages: 124
ISBN-13:
DOWNLOAD EBOOK →Geological Survey Bulletin 983. A description of one the three commercial deposits found in the United States.
Author: Stephen Edmund Clabaugh
Publisher:
Published: 1952
Total Pages: 124
ISBN-13:
DOWNLOAD EBOOK →Geological Survey Bulletin 983. A description of one the three commercial deposits found in the United States.
Author: Stephen Edmund Clabaugh
Publisher:
Published: 1949
Total Pages: 171
ISBN-13:
DOWNLOAD EBOOK →Author: Harold Williams Fairbairn
Publisher:
Published: 1951
Total Pages: 100
ISBN-13:
DOWNLOAD EBOOK →Author: Joseph Hyde Pratt
Publisher: Forgotten Books
Published: 2015-07-17
Total Pages: 218
ISBN-13: 9781331618201
DOWNLOAD EBOOK →Excerpt from Corundum: And Its Occurrence and Distribution in the United States Ruby and sapphire, the corundum gems, have been known since pre historic times. Our earliest accounts tell of their use among the ancients, both as ornaments and as money. The early Greeks and Romans were not only familiar with these gems, but made consider able investigation into their physical properties and described their occurrences. Of the use of corundum as an abrasive, there 15 no record until recent years. Some believe, however, that the perfection of the engravings upon monuments of the Egyptians is due to the use of emery, which they might have obtained from the large deposits of the Grecian Archipelago. 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.
Author: Stephen Edmund Clabaugh
Publisher:
Published: 1950
Total Pages: 25
ISBN-13:
DOWNLOAD EBOOK →Author: P. W. Scott
Publisher: Geological Society of London
Published: 2002
Total Pages: 392
ISBN-13: 9781862390997
DOWNLOAD EBOOK →