| The ore in the gossan is very generally more valuable than it will be below, and this is especially true of gold and silver ores. |
| Several Cornish mining words are used in English language mining terminology, such as costean, gossan, gunnies, kibbal, kieve and vug. |
| This further step forward can be attributed to the presence of iron oxide gossan minerals in the weathered upper zones of copper sulfide deposits. |
| Subcropping gossan overlying the deposit was also sampled. |
| It was found in gossan from a dump of one of the small mines on the southeastern side of the mountain on the World's Fair claim group. |
| Some of these veins reached the surface where, in the enclosing gossan, the stibnite has been subjected to oxidation. |
