The only known specimen of kernowite, named after Kernow which is the Cornish word for Cornwall, was collected in the 1700s.
It became part of the Natural History Museum, London’s geological collections in 1964.
“Considering how many geologists, prospectors and collectors have scoured the county over the centuries in search of mineral treasure it’s amazing that in 2020 we are adding a new mineral,” said Mike Rumsey, principal curator of minerals at the Natural History Museum, London.
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