association | 0.20 |
less brittle | 0.52 |
massive | 0.28 |
a yellow | 0.25 |
crystalline | 0.20 |
a copper iron sulfide m… | 0.63 |
common mineral | 0.44 |
brass-yellow mineral | 0.25 |
confused with pyrite | 0.47 |
replaced by bornite | 0.25 |
treated with acid | 0.25 |
scratched with nail | 0.25 |