The Deposits of the Useful Minerals Rocks, Vol. 2: Their Origin, Form, and Content (Classic Reprint)

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Excerpt from The Deposits of the Useful Minerals Rocks, Vol. 2: Their Origin, Form, and Content

I have gratefully to acknowledge the several helpful reviews upon Vol. I. Of this translation.

It has been suggested 1 that it would have been better not to have used eruptive as synonymous with igneous, but rather with volcanic. That is a suggestion which many would urge. The authors, however, whose views I am representing, actually use eruptive. Moreover, this term, in association with sedimentary as counterpart, is common among both British and American authorities. Geikie, for instance, in his text-book of Geology' gives eruptive undoubted preference over igneous, and, accord ing to him,2 the eruptive rocks include both the plutonic and the volcanic.

It appeared to me also that in, discussing ore-deposits the term eruptive assisted in conveying the idea of the part played by material coming upwards through the crust. The term sedimentary, its counter part, similarly conveyed the idea of settlement upon the crust. In these two words we therefore have the magmatic and meteoric sources of ore deposits suggested. The term igneous, properly speaking, should have aqueous for counterpart, these two terms suggesting the elements fire and water respectively, a suggestion less pertinent than the one above.

F. L. Ransome regrets the confusion in the English and American terms for the principal oxidized zinc ores. To avoid this confusion I have adopted a suggestion by Prof. Cullis, and described these ores as zinc carbonate and zinc hydrosilicate respectively, and the mixture of the two as zinc oxidized ore.

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Details

Publisher -

Language - English

Author(s) - F. Beyschlag

Paperback

Published Date - August 23 2019

ISBN - 9781330734315

Dimesions - 22.9 x 15.2 x 4.2 cm

Page Count - 781

Hardback

Published Date - August 23 2019

ISBN - 9780365130802

Dimesions - 22.9 x 15.2 x 4.5 cm

Page Count - 779

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