Also called water-repellent surface hydrophobic. A particle (or mineral) of this sort will adhere to an air bubble and float out of a flotation pulp otherwise, the particle will not float. See also: air circulation.Īir-avid surface A surface that seems to prefer contact with air to contact with water. Air piped under compression to work areas and used to operate drilling or mining machinery. Atmospheric air delivered under compression to bottom of drill hole through the drill stem and used in place of water to clear the drill bit of cuttings and to blow them out of the borehole.ĭ. The current of atmospheric air circulating through and ventilating the workings of a mine.Ĭ. It also contains about 0.03% carbon dioxide, some aqueous vapor, argon, and other gases.ī. The mixture of gases that surrounds the Earth and forms its atmosphere composed by volume of 21% oxygen and 78% nitrogen by weight about 23% oxygen and 77% nitrogen. Wolframite pseudomorphous after scheelite.ĪIME American Institute of Mining and Metallurgical Engineers.Īir a. Syn: acicular bismuth aciculite needle ore acicular bismuth aciculite.ī. An orthorhombic mineral, PbCuBiS (sub 3) sp gr, 6.1 to 6.8 an ore of lead, copper, and bismuth. 2H (sub 2) O forms a series with cobaltomenite rose colored vitreous luster no cleavage conchoidal fracture strongly pleochroic, X rose, Y pale green, Z brown green from Pacajake, Bolivia.Ī-horizon In a soil profile, the uppermost zone from which soluble salts and colloids have been leached and in which organic matter has accumulated. Ahlfeldite A monoclinic mineral, NiSeO (sub 3).
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