Unpacking bags of Science: Diamonds in the rough

This post was written by Tara Knights, a work placement student with the Research & Public History department  from Sussex University’s MA Art History and Museum Curating.

This is the third installment in a series of blog posts where we have been exploring the lives of our ancestors by looking at a collection of tool bags from the Science Museum’s collections. This time we will be looking at the mining industry. We might think we’re fairly familiar with the tools of the mining trade, with the Davy lamp and pickaxe especially being mining icons. But do you know what kind of instruments mining engineers would use?

 

Mineralogical test kit (Science Museum)

Mining engineers played (and still play)  an important role in the consultation of almost every stage of a mining operation. They first analysed the potential of a mineral deposit, and then determined the profitability of a mine.

When the minerals had been successfully extracted, this mineralogical test kit was used to perform a mineralogical analysis in order to identify mineral species and understand their characteristics and properties. In order for a substance to be classified as a mineral it had to pass a series of tests, and this kit contains the tools needed for mineral testing, including a blowpipe, tweezers and chemicals.

The flame test indicated the identity of the substance being tested by the colour of the flame it produced. For example, a potassium compound burns with a lilac flame. Blowing through the blowpipe over a candle providing a heat source produced a tiny area of intense heat on a charcoal block, and created the right conditions for separating metals from their ores. After the process of mineralogical testing had taken place, this Tutton’s goniometer for cutting, grinding and polishing minerals may have been used. It was manufactured by Troughton and Simms, London c. 1894, and designed by Mr. A.E. Tutton.

 

Tutton’s goniometer (Science Museum)

 

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