In 1840 when the Glasgow, Paisley and Greenock railway line was being constructed a new mineral was discovered while a tunnel was being dug near Bishopton. It was named Greenockite.
It is seemingly quite a rare mineral - a naturally occurring cadmium sulphide. You can read more about its structure and analysis here.
Greenockite was named after Earl Charles Murray Cathcart, the then Lord Greenock (1783-1859) who became the second Earl Cathcart on the death of his father. He had a passion for geology and minerology and was a fellow of the Royal Society of Edinburgh. Cathcart had a distinguished military career and was Governor General of British North America.
|Charles Murray Cathcart
Arthur Connell (1794-1863), Scottish chemist and mineralogist was responsible for describing and naming the mineral.