A dark gray mineral consisting of a sulfide of copper and arsenic.
- ‘Other possible occurrences include porphyry copper deposits that contain enargite at depth, such as Chuquicamata, Chile.’
- ‘Near the end of its operation, mine personnel recovered exceptional gold in bright, medium yellow masses and splotches on chertlike, vuggy quartz and associated with sulfides, including enargite.’
Mid 19th century: from Greek enargēs ‘clear’ (referring to evident cleavage) + -ite.
We take a look at several popular, though confusing, punctuation marks.