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Adamite is a zinc arsenate hydroxide mineral, Zn 2 As O 4 OH.It is a mineral that typically occurs in the oxidized or weathered zone above zinc ore occurrences. Pure adamite is colorless, but usually it possess yellow color due to Fe compounds admixture.
Muck farming on drained swamps is an important part of agriculture in New York, Ohio, Illinois, Indiana, Michigan, Wisconsin, and Florida, where mostly vegetables are grown. The muckland of Torrey Farms of Elba, New York , which covers the counties of Orleans , Niagara , and Genesee , is thought to be the largest continuous section of muckland ...
There are two principal phases of underground mining: development mining and production mining. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and ...
Conventional mining referred to the original part of operations of the Sullivan Mine, where miners drilled and moved ore by hand and with small equipment. The ore was then shipped via an extensive 3 ft (914 mm) narrow gauge underground rail system which led to the surface and then on to the Marysville concentrator. At one time there were more ...
Musk deer of Tibet in an 1835 illustration. Musk is a class of aromatic substances commonly used as base notes in perfumery.They include glandular secretions from animals such as the musk deer, numerous plants emitting similar fragrances, and artificial substances with similar odors.
Psilomelane has no definite chemical composition and occurs as botryoidal and stalactitic masses with a smooth shining surface and submetallic lustre. The mineral is readily distinguished from other hydrous manganese oxides (manganite and wad) by its greater hardness 5 to 6; the specific gravity varies from 3.7 to 4.7.
Gossan (eiserner hut or eisenhut) is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein. In the classic gossan or iron cap all that remains is iron oxides and quartz , often in the form of boxworks (which are quartz-lined cavities retaining the shape of the dissolved ore minerals).
Thus, smelting, or refining, is necessary to reduce the compound containing the Ag + cation into metallic Ag and to remove other byproducts to get at pure silver. [1] The process, which uses mercury amalgamation to recover silver from ore, was first used at scale by Bartolomé de Medina in Pachuca, Mexico, in 1554. [2]