...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,...

...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...

...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...

...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...

...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,...