The Assayer's Guide; Or, Practical Directions To Assayers, Miners, And Smelters - Softcover

Oscar M. Lieber

Softcover

ISBN 10: 0461572222 ISBN 13: 9780461572223

Publisher: HardPress, 2021

Synopsis

The Assayer's Guide; Or, Practical Directions To Assayers, Miners, And Smelters by Oscar M. Lieber is a mid-19th-century manual on practical assaying techniques. It presents methods for determining the content of metals in ores and alloys using heat and wet chemical processes, with particular emphasis on gold and silver, coins, and their alloys. The book provides detailed descriptions of essential implements and apparatus—furnaces, muf?les, cupels, balances, tongs, and crucibles—and step-by-step procedures for cupellation of silver and gold ores, the fusion and separation of metals, and preparation of metallic buttons for analysis. It covers both silver and gold assays, including the loss-rectification table used to adjust results, and discusses related methods such as Gay-Lussac’s process for silver alloys and amalgamation for gold. Additional sections address copper, lead, iron, and platinum ores, as well as a wet process for gold, testing of coins, and the testing of calorific power of fuels. The Preface explains the work’s aim to merge practicality with accessible chemistry and to guide professionals in metallurgical operations, with historical notes and references to blowpipe techniques.

Edition details

• Publisher: HardPress
• Publication date: 2021
• Language: English
• ISBN 10: 0461572222
• ISBN 13: 9780461572223
• Binding: Paperback
• Number of pages: 190