Jamborite is a hexagonal-trigonal, green, mineral consisting of nickel, cobalt, hydroxides and sulphur. Its discovery was first published in 1973.
It is named after John Leslie Jambor, a Canadian geologist.
It has a lamellar structure, superficially resembling grass.
It was formerly believed to be in the hydrotalcite supergroup, but was later disproved.
This mineral has been found in the Northern Apennines of Italy, Spain and Wales.
It is featured in the Stardew Valley video game as a minor item obtained from geodes.