A Textbook of Assaying: For the Use of Those Connected with Mines., by Cornelius Beringer and John Jacob Beringer.
The book is available through Project Gutenberg.
https://www.gutenberg.org/files/18751/18751-h/18751-h.htm
Quite an old textbook, but nice (IMHO) Explains the classical methods in detail.
The book is available through Project Gutenberg.
https://www.gutenberg.org/files/18751/18751-h/18751-h.htm
Quite an old textbook, but nice (IMHO) Explains the classical methods in detail.