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Quartz prophyry
Date Made/Found: 1858
Maker: Dr Henry Clifton Sorby FRS , British, 1826 - 1908
Previous owner: Dr Henry Clifton Sorby FRS , British, 1826 - 1908
Place Object Found: Gwennap
Department: Earth Sciences
Accession Number: 2016.378.12
Henry Clifton Sorby, born in Sheffield in 1826, was one of the last great Victorian amateur scientists. He prepared rock samples thin enough for light to be transmitted through them. This enabled him to examine specimens with a powerful microscope. He used polarised light to increase the contrast between different minerals in the samples, helping him to identify what the rocks were made of. This photograph was taken recently using the same method.
Display Location: In Store
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