 early times, as it occurs native in the metallic state, and is moreover easily reduced from its ores. Metallic copper is found in enormous quantity near Lake Superior, in North America, and other localities. The following ores are the most important:...  Handbook of Chemistry, for School and Home Use - Seite 48von William James Rolfe, Joseph Anthony Gillet - 1869 - 205 SeitenVollansicht - Über dieses Buch
 | Sir Henry Enfield Roscoe - 1867 - 420 Seiten
...crystallizing in cubic and octohedral forms, but the chief sources of copper are the following ores, (i) A compound of copper, sulphur, and iron, known as copper pyrites, Cu 2 S + Fe 2 S 3 . (2) The cuprous sulphide, Cu 2 S. (3) The carbonate or malachite ; and (4) The red or... | |
 | Henry Enfield Roscoe - 1868 - 418 Seiten
...Gravity 8-93. Copper is an important metal, largely used in the arts, and has been known from very early times, as it occurs native in the metallic state,...reduced from its ores. Metallic copper is found in considerable quantity in North America and other localities, crystallizing in cubic and octohedral... | |
 | Henry Enfield Roscoe - 1868 - 416 Seiten
...Gravity 8-93. Copper is an important metal, largely used in the arts, and has been known from very early times, as it occurs native in the metallic state,...reduced from its ores. Metallic copper is found in considerable quantity in North America and other localities, crystallizing in cubic and octohedral... | |
 | Henry Enfield Roscoe - 1869 - 506 Seiten
...Gravity 8-93. Copper is an important metal, largely used in the arts, and has been known from very early times, as it occurs native in the metallic state,...reduced from its ores. Metallic copper is found in considerable quantity in North America and other localities, crystallizing in cubic and octahedral... | |
 | Henry Enfield Roscoe - 1869 - 572 Seiten
...Gravity 8-93. Copper is an important metal, largely used in the arts, and has been known from very early times, as it occurs native in the metallic state,...reduced from its ores. Metallic copper is found in considerable quantity in North America and other localities, crystallizing in cubic and octahedral... | |
 | William James Rolfe, Joseph Anthony Gillet - 1870 - 476 Seiten
...COPPER GROUP OF METALS. . COPPER. 284. Its Ores, Properties, etc. — Copper has been known from very early times, as it occurs native in the metallic state,...copper, sulphur, and iron, known as copper pyrites, Cu 2 S -j- Fe 2 S,; (2) the cuprous sulphide, Cu 2 S ; (3) the carbonate or malachite ; and (4) the red... | |
 | Henry Enfield Roscoe - 1870 - 414 Seiten
...Gravity 8-93. Copper is an important metal, largely used in the arts, and has been known from very early times, as it occurs native in the metallic state,...reduced from its ores. Metallic copper is found in considerable quantity in North America and other localities, crystallizing in cubic and octohedral... | |
 | henry e. roscoe - 1870 - 412 Seiten
...Gravity 8*93. Copper is an important metal, largely used in the arts, and has been known from very early times, as it occurs native in the metallic state,...reduced from its ores. Metallic copper is found in considerable quantity in North America and other localities, crystallizing in cubic and octohedral... | |
 | William James Rolfe - 1872 - 480 Seiten
...COPPER GROUP OF METALS. COPPER. 284. Its Ores, Properties, etc. — Copper has been known from very early times, as it occurs native in the metallic state,...copper, sulphur, and iron, known as copper pyrites, Cu 2 S -f- Fe.,5, ; (2) the cuprous sulphide, Cu 2 S ; (3) the carbonate or malachite ; and (4) the red... | |
 | Henry Enfield Roscoe - 1873 - 538 Seiten
...used in the arts, and has been known from very early times, as it occurs in the metallic or native state, and is moreover easily reduced from its ores. Metallic copper is found in considerable quantity in North America and other localities, crystallizing in cubic and octohedral... | |
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