redruthite
/ˌrɛdˈruːθʌɪt/ /ˈrɛdruθʌɪt/Mineralogy. Now rare
noun
A dark grey or black copper ore mineral. Now usually called chalcocite.
- The mineral is a sulphide of copper, Cu2S. Crystal system: orthorhombic..
Origin
Mid 19th century; earliest use found in James Nicol (1810–1879), geologist. From Redruth, the name of a town in Cornwall, where the mineral was first found + -ite.
- intercool
- intercooler
- intercorrelate
- intercorrelation
- intercostal
- intercostally
- intercourse
- intercrop
- intercross
- intercrural
- intercultural
- interculturalism
- intercurrent
- intercut
- interdenominational
- interdenominationally
- interdental
- interdentally
- interdepartmental
- interdepartmentally
- interdepend
- interdependence
- interdependency
- interdependent
- interdict