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Gold-dust expert
Answer for the clue "Gold-dust expert ", 7 letters:
assayer
Alternative clues for the word assayer
Word definitions for assayer in dictionaries
Wiktionary
Word definitions in Wiktionary
n. One who assays, or performs chemical tests on metals.
WordNet
Word definitions in WordNet
n. an analyst who assays (performs chemical tests on) metals
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Assayer \As*say"er\, n. One who assays. Specifically: One who examines metallic ores or compounds, for the purpose of determining the amount of any particular metal in the same, especially of gold or silver.
Usage examples of assayer.
We have endeavoured rather to give what will be of use to the assayer than to cover the ground within the limits of a faulty definition.
The assayer, however, uses the sample which he has dried for his moisture-determination, as the dry ore on which he makes his other assays, and no variation in moisture would influence the other and more important determinations.
It is the best acid for dissolving metallic oxides and carbonates, and is always used by the assayer when oxidising agents are to be avoided.
The assayer, as a rule, can select his own standard temperature, and may choose one which will always necessitate warming.
In estimating minute quantities of gold there are one or two points, of importance to an assayer only in this assay, where they will often allow one to avoid the working of inconveniently large charges.
But they are treated here because they owe their importance to their use in the extraction of gold and because their determination has become a part of the ordinary work of an assayer of gold ores.
It is more than probable that in practice the returns from the dressing-floors check the assayer, instead of, as should properly be the case, the assayer checking the returns.
Sulphites are of little importance to the assayer, and are converted into sulphates by the action of nitric acid and other oxidising agents.
Chemist and Assayer of the Royal Mint, and Professor of Metallurgy in the Royal College of Science.
Some assayers advise cleaning by dipping in warm dilute hydrochloric acid followed by washing in water and drying.
The older assayers, therefore, added silver to their gold in such proportion that the alloy for parting should be one quarter gold to three quarters silver.
Many assayers use flasks, though of a smaller size, for the ordinary partings in assaying gold ores.
Moreover, the working of the dry method has been monopolised by a small ring of assayers, with the double result of exciting outside jealousy and, worse still, of retarding the development and improvement of the process.
The dry assayers who do this are in most cases helped, and sometimes, perhaps, controlled, by wet assays made for one or both of the parties in the transaction.
Some assayers cover their pots with a flat cover placed loosely on, while others leave the mixture in the open pot.