| The best conductor among the natural sulphides appeared to be mispickel, which vies in this respect with some of the metals. |
| A dressed product of copper works in South America, consisting of grains of native copper mixed with pyrite, chalcopyrite, mispickel, and earthy minerals. |
| It can be obtained from mispickel by heating, which causes the arsenic to sublime and leaves the iron sulfide. |
| The gold is also often visible to the naked eye in all the associated minerals, and particularly in the mispickel and blende. |
| In the periphery of the oxidation, copper mineralization occurs as chalcopyrite, bornite, tennantite and mispickel. |
| Arsenic is occasionally found as a free element, but it is usually found in a number of minerals, the most common one being mispickel. |
