 | James Dwight Dana - 1851 - 458 Seiten
...occurs at the Somerville and Schuyler-s mine, NJ, at Morgantown, Penn-, and Wolcotville, Conn. Uses. This ore in the pure state affords 30 per cent, of...copper ; but as it occurs in the rock will hardly yield one. third this amount. Still when abundant, as it appears to be in the Mississippi valley, it is a... | |
 | J.D. Dana - 1855 - 440 Seiten
...occurs at the Somerville and Schuyler's mine, NJ, at Morgantown, Penn., and Wolcotville, Conn. Uses. This ore in the pure state affords 30 per cent, of...be in the Mississippi valley, it is a valuable ore. It is easy of reduction by means of limestone as a flux. Dioptase is another silicate of copper, occurring... | |
 | James Dwight Dana - 1865 - 498 Seiten
...occurs at the Somerville and Schuyler-s mine, NJ, at Morgantown, Penn., and Woleotville, Conn. Uses. This ore in the pure state affords 30 per cent, of...this amount. Still when abundant, as it appears to he in the Mississippi valley, it is a valuable ore. It is easy of reduction by means of limestone as... | |
 | Charles Knight - 1866 - 588 Seiten
...and Missouri it is so abundant as to be worked for copper. It was formerly taken for green malachite. This ore in the pure state affords 30 per cent, of...occurs in the rock •will hardly yield one-third of this amount. Still, when abundant, as it appeal's to be iu the Mississippi valley, it is a valuable... | |
 | Charles Knight - 1867 - 630 Seiten
...and Missouri it is so abundant as to be worked for copper. It was formerly taken for green malachite. This ore in the pure state affords 30 per cent of...it occurs in the rock will hardly yield one-third of this amount. Still, when abundant, as it appears to bo in the Mississippi valley, it is a valuable... | |
| |
... Tyrol, Siberia, Thuringia, &c. In Chili it is abundant at the various mines. In Wisconsin and Missouri it is so abundant as to be worked for copper. It was formerly taken for green malachite. It also occurs at the Somerville and Schuyler's mine, NJ,... 