...blackish lead-gray, often tarnished blue or green. Streak sometimes shining. H==2*5 — 3. Gr= 5'5— 5-8. Composition: sulphur 20*6, copper 77*2, iron 1*5....at Wolcottville, Simsbury, and Cheshire, Conn. ; at Schuyler's Mines, and elsewhere, NJ ; in the US copper mine district, Blue Ridge, Orange county, Virginia...

...blow-pipe. The solution made by putting a piece of the ore in nitric acid covers an iron-plate or knifeblade with copper, while a similar solution of the silver ore covers a copper-plate with silver. This ore occurs with other copper ores in beds and veins. In Cornwall splendid...

...blow-pipe. The solution made by putting a piece of tho ore in nitric acid covers an iron-plate or knifeblade with copper, while a similar solution of the silver ore covers a copper-plate with silver. This ore occurs with other copper ores in beds and veins. In Cornwall splendid...

...sulphur 20*6, copper 77*2, iron 1-5. Beore the blowpipe it gives off fumes of sulphur, fuses easily n the external flame, and boils. After the sulphur is...crystallizations occurs at Bristol, Conn. Other localities are at Wolcott ville, Simsbury, and Cheshire, Conn. ; at Schuyler's Mines, and elsewhere, NJ ; in the US copper...

...and affords different results BB The solution in nitric acid covers an iron plate (or knife-blade) with copper, while a similar solution of the silver...and veins. At Cornwall, splendid crystallizations ; also in Siberia; Hesse; Saxony; the Banat; Chili, etc. mines of Michigan and the "Western States;...