Excerpt from Practical Manual of Minerals, Mines and Mining: Comprising Suggestions as to the Localities and Associations of All the Useful Minerals
The object of this manual is to place before the practical mineralogist and miner all the important help which may be derived from the present state of knowledge as it bears upon the departments of useful mineralogy, mining, and mines. We have intended to make use of the best results, not only of experiment, but of successful work, and, therefore, only the best methods have been, in most cases, presented. Nevertheless, it frequently happens that a method adopted in one condition, or under certain circumstanced, must be modified under other conditions, and there may be sound reasons for adopting another method to attain the same result. Hence, where it is difficult to pronounce upon one method, we have given an alternative.
In chemical analyses and reductions, especially in the methods of detection or determination, we have confined ourselves to that method which was simplest in treatment. In practical and most technical work much depends upon the manipulation - indeed, more depends upon the neatness and the judgment of the chemist than upon his method or the process he has adopted.
This work is divided into two principal parts and one subordinate.
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