| J.D. Dana - 1855 - 440 Seiten
...in place of part of the copper, and is then called argentiferous gray copper ore, or silver fahlerz. The amount of arsenic varies from 0 to 10 per cent....Dissolve, when pulverized, in nitric acid, affording a brownish -green solution. Dif. Its copper reactions before the blowpipe and in solution in nitric acid,... | |
| Charles Knight - 1866 - 588 Seiten
...place of part of the co|,[icr, and is then called Argentiferous Gray Copper Ore, or Silver fddtrz. The amount of arsenic varies from 0 to 10 per cent....included 10 per cent, of platinum, and another from Hohenstcin some gold ; another from Tuscany 27 per cent, of mercury. Tliese varieties give off before... | |
| Charles Knight - 1867 - 630 Seiten
...called Argentiferous Gray Copper Ore, or Silver Fa} J tn. The amount of arsenic varies from 0 to 1 0 per cent. One variety from Spain included 10 per cent,...antimony, and after roasting yield a globule of copper. It dissolves, when pulverised, in nitric acid, affording a brownish-green solution. Ite copper-reactions... | |
| James Dwight Dana - 1876 - 458 Seiten
...in place of part of the copper, and is then called argentiferous gray copper ore, or silver fahlerz. The amount of arsenic varies from 0 to 10 per cent....Dif. Its copper reactions before the blowpipe and in solution in nitric acid, distinguish it from the gray silver ores. Obs. The Cornish mines, Andreasberg... | |
| James Dwight Dana - 1879 - 496 Seiten
...per cent, of silver in place of part of the copper, and is then called argentiferous letrahedrite. The amount of arsenic varies from 0 to 10 per cent....included 10 per cent, of platinum, and another from llohenstein some gold. Specimens from Schwatz, and some other localities, contain 15 to 18 per cent,... | |
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