 | 1853 - 688 pages
...feet. On penetrating beneath the surface, the section represented in the annexed "figure is obtained. Beneath the gossan is found a bed or mass of black...sulphurets of iron and copper, which was associated with a quartzon gangue or vein-stone. The place of the bed of copper ore mark* the limit of the decomposition... | |
 | Josiah Dwight Whitney - Technology & Engineering - 1854 - 530 pages
...gossan is found a ! .1 If mass of black cupriferous f variable thickness and ;, This, as well as the n, is the result of the decomposition of an ore consisting...mixture of the sulphurets of iron and copper, which were associated with a quartzose gangue. The place of the bed of copper ore marks the limit of the... | |
 | Josiah Dwight Whitney - Mines and mineral resources - 1854 - 554 pages
...penetrating beneath the surface, the section represented in the annexed figure (Fig. 34), is obtained. Beneath the gossan is found a bed or mass of black cupriferous ore, of variable thickness and composition of an ore consisting originally of a mixture of the eulphurets of iron and copper, which... | |
 | Josiah Dwight Whitney - Technology & Engineering - 1854 - 520 pages
...Beneath the gossan is found a bed or mass of black cupriferous ore, of variable thickness and composition of an ore consisting originally of a mixture of the sulphurets of iron and copper, which were associated with a quartzose gangue. The place of the bed of copper ore marks the limit of the... | |
 | William Harvey Emmons - Ore-deposits - 1917 - 574 pages
...particular reference to the east Tennessee copper mines : Am. Jour. Scl., 2d see., vol. 2O, pp. 53-57, 1855. Beneath the gossan is found a bed or mass of black...copper which was associated with a quartzose gangue or vein stone. The place of the bed of copper ore marks the limit of the decomposition of the vein ; beneath... | |
 | Geological Survey (U.S.) - Geology - 1917 - 572 pages
...particular reference to the east Tennessee copper mines : Am. Jour. Sci., 2d ser., vol. 20, pp. 53-57, 1855. Beneath the gossan Is found a bed or mass of black...thickness and width. This, as well as the gossan, is the resuit of the decomposition of an ore consisting originally of a mixture of the sulphurets of iron... | |
 | Geology - 1927 - 170 pages
...his brief description of the Ducktown, Tennessee, copper deposits. He made the following statement. "Beneath the gossan is found a bed or mass of black...mixture of the sulphurets of iron and copper, which were associated with a quartzose gangue." GF Becker, in 1882, in describing the Comstock Lode and SF... | |
 | Johns Hopkins University - Science - 1927 - 206 pages
...his brief description of the Ducktown, Tennessee, copper deposits. He made the following statement. "Beneath the gossan is found a bed or mass of black cupriferous ore of variable thickness and width. 'Day, Arthur L. and Shepherd, ES, Bull. Geol. Soc. of Amer., vol. 24, pp. 573-606, 1912. Moc. cit.,... | |
| |
Beneath the gossan is found a bed or mass of black cupriferous ore of variable thickness and width. This, as well as the gossan, is the result of the decomposition of an ore consisting originally of a mixture of the sulphurets of iron and copper which... 