Excerpt from Gold: Its Geological Occurrence and Geographical Distribution
The writer who would add one more treatise to the litera ture of the study of ore-deposits must needs show justification. He must present either new facts or a new and more scientific arrangement of already-published data. It is hoped that, to some degree at least, both these ends have been attained in the present volume. In order that the value of the collected facts may be in no wise impaired by possibly erroneous correlation, speculative inferences have here been sharply differentiated from the data of Observation. This arrangement of the subject is presented with the more con fidence since it is believed that absolute progress in the science of ore-deposits will, in the future, be made largely, if not entirely, by inductive reasoning. A compilation Of the known facts concerning the deposition of a single metal, and of one possessing fairly well-defined characters, both native and in combination, has therefore seemed a not unnecessary contri bution towards the foundation on which a stable hypothesis of ore deposition must be erected. The correlation of the data Obtained has for the present been considered of minor importance, and every effort has, on the other hand, been directed towards the presentation in readily accessible form of the salient facts of auriferous deposition.
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Seller: Forgotten Books, London, United Kingdom
Paperback. Condition: New. Print on Demand. This book explores the origins of gold and its ubiquity throughout the Earth. The author argues that all gold was originally present in igneous rocks but then separated and aggregated into veins, seams, and deposits scattered across the globe. Through a wide-ranging examination of gold's behavior in the Earth, the author posits that the precious metal began as dispersed ions and were leached from the surrounding igneous rocks and deposited in veins by circulating waters. The author traces gold throughout Earth's history, from its initial concentration in the planet's crust through its metamorphosis due to water circulation and pressure, to its eventual emergence in a myriad of forms including nuggets, grains, and alluvial sediments. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781334490248_0
Quantity: Over 20 available
Seller: PBShop.store US, Wood Dale, IL, U.S.A.
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781334490248
Seller: PBShop.store UK, Fairford, GLOS, United Kingdom
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781334490248
Quantity: 15 available
Seller: Buchpark, Trebbin, Germany
Condition: Hervorragend. Zustand: Hervorragend | Seiten: 792 | Sprache: Englisch | Produktart: Bücher | Keine Beschreibung verfügbar. Seller Inventory # 28179583/1