Consisting of angular fragments cemented collectively resembling breccia in features
- comprising angular fragments cemented collectively; resembling breccia to look at.
(a.) composed of angular fragments cemented together; resembling breccia to look at.
The mining product next in value to coal in 1908 was copper, taken chiefly in Carbon county in a zone of brecciated quartzite underlying schist, the original ore being chalcopyrite, with possibly some pyrite, a secondary enrichment, which has produced important bodies of chalcocite in the upper workings, but these are replaced by chalcopyrite at greater depth.