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Middlings minerals

The value of TDS of Ordovician groundwater was relatively bigger, varying from 1,330.3 mg/1 to 3,555.4 mg/1 with the average value of 2,464.4 mg/1. The Ordovician groundwater belonged to middle mineralization (1,000 3,000 mg/1) and high mineralization water (Table 1). [Pg.1281]

Another separation device that may be used is the mineral jig. This unit produces a loose vibrating bed of particles in a Hquid medium. The vibrations segregate the soHds into layers of density. The dense nonferrous metals, primarily lead, 2inc, and copper are at the bottom while organics are at the top. The middle layer is primarily glass. [Pg.230]

Paint is one of the most common and widely used materials in home and building constmction and decoration (see Building materials). Its broad use comes from its abiHty to provide not only improved appearance and decoration but also protection of a substrate to which it is appHed. Evidence of the historical uses of paint goes back over 25,000 years to cave paintings found in Europe. The Bible describes pitch being used to coat and protect Noah s Ark. Over 10,000 years ago in the Middle East, various minerals and metals such as lime, siHca, copper and iron oxides, and chalk were mixed and reacted to produce many colors. Resins from plant sap and casein were also used. Over 2000 years ago in Asia, resins refined from insect secretions and sap from trees were used to make clear lacquers and varnishes (2). [Pg.540]

Tar sand feed contains a certain portion of fine minerals that, if allowed to build up in concentration in the middlings, increases viscosity and eventually dismpts settling ia the separation cell. The drag stream is required as a purge in order to control the fines concentration in the middlings. The amounts of water that can enter with the feed and leave with the separation cell tailings and froth are relatively fixed. Thus, the size of the drag stream determines the makeup water requirement for the separation cell. [Pg.358]

Serious science started in Russian empire in the middle of the XVIII century. The first known Russian scientist M.V. Lomonosov obtained (in the I750sJ experimental data on the preservation of the mass of substances in chemical reactions. T.E. Lovits discovered adsorption from solutions he used wood carbon as an adsorbent. Among other scientists, Lovits detected compounds using characteristic forms of their crystals. V.M. Severgin published a book on analysis of mineral raw materials. [Pg.20]

Corrosion protection using bitumen coatings reaches back into antiquity. The most ancient occurrence of bitumen deposits was in Mesopotamia. Many writers of antiquity, such as Dido, Strabo, and Vitruvius, mention that asphalt was obtained for many years near Babylon. About 5000 yeare ago, the streets of Ur, capital of the Sumerians (north of present-day Kuwait), were lit at night with mineral oil. Natural gas was reported to be used for lighting in the Middle East and China. [Pg.2]

As may be expected of an amorphous polymer in the middle range of the solubility parameter table, poly(methyl methacrylate) is soluble in a number of solvents with similar solubility parameters. Some examples were given in the previous section. The polymer is attacked by mineral acids but is resistant to alkalis, water and most aqueous inorganic salt solutions. A number of organic materials although not solvents may cause crazing and cracking, e.g. aliphatic alcohols. [Pg.409]

Ref 130, p 220) and by Great Britain (Vol 3, C498-R). These rockets utilized BlkPdr as proplnt, fuse (Ref 122) and as an expl. Up to the middle of the last century the history of pyrotechnics is the history of BlkPdr. Even now, as will be discussed in Section 7, large quantities of BlkPdr are used as an igniter. By the late 18 th century a new age in pyrotechnics commenced thru the synthesis of K chlorate (Vol 2, C190-R), the discovery of Fulminates (Vol 6, F216-R) and the identification of the minerals which would impart color to a flame. The discovery of electricity brought about pure chemicals and hence, better flame colors, new oxi-... [Pg.982]

TSUCHIDA K, MizusHiMA s, TOBA M, SODA K (1999) Dietary soybeans intake and bone mineral density among 995 middle-aged women in Yokohama. J Epidemiol 9, 14-19. [Pg.105]

In Southwest Japan, two styles of vein-type mineralization (Hg and Sb) formed from middle Miocene to the present. Many Hg and Sb deposits are present along the Median Tectonic Line, associated with the Setouchi andesites and ilmenite-series granitic rocks (Fig. 1.3). [Pg.4]

During the Miocene age, polymetallic vein-type (xenothermal-type, subvolcanic-type) and gold-quartz vein-type (mesothermal-hypothermal-type) mineralizations occurred mainly in middle to western part of Japan. They are described in section 1.6.1. In section 1.6.2, Hg and Sb vein-type deposits are described. [Pg.14]

The summary of the bulk chemical compositions (major elements, minor elements, rare earth elements), Sr/ Sr (Farrell et al., 1978 Farrell and Holland, 1983), microscopic observation, and chemistry of spinel of unaltered basalt clarifies the tectonic setting of Kuroko deposits. Based on the geochemical data on the selected basalt samples which suffered very weak alteration, it can be pointed out that the basalt that erupted almost contemporaneously with the Kuroko mineralization was BABB (back-arc basin basalt) with geochemical features of which are intermediate between Island arc tholeiite and N-type MORE. This clearly supports the theory that Kuroko deposits formed at back-arc basin at middle Miocene age. [Pg.19]

As shown in Fig. 1.117, Se-type and Te-type epithermal Au-Ag vein-type deposits are located in the Cretaceous-Quaternary volcanic terrane of Japan (e.g., northeast and southwest Hokkaido, middle Honshu, south Kyushu). Some Te-type deposits are located in regions similar to the Se-type deposits. Sometimes, Te mineralization is associated with the Se-type deposits, though Te minerals usually do not coexist with Se minerals. However, rarely, Te minerals coexist with Se minerals in the Te-type deposits (e.g., Teine, Suzaki, Kawazu, Iriki) on a polished section scale. For example, coexistence of native Te and Se-bearing tetrahedrite is found at Teine. Generally, Te mineralization occurs at... [Pg.159]

The sequence of mineralization has been studied by Nagayama (1993a) and Taka-hashi et al. (1998) (Fig. 1.132). Quartz is the most abundant mineral occurring throughout the vein. Adularia tends to occur at earlier stage. Smectite is the earliest mineral. Electrum tends to occur in early and middle stages. Naumannite occurs after the early-stage... [Pg.186]

As noted already, intense submarine hydrothermal activity took place in the Japan Sea in 15-12 Ma, associated with Kuroko mineralization. However, it is uncertain that submarine hydrothermal activities associated with the Kuroko mineralization took place in the other periods from middle Miocene to present in the Japan Sea. Therefore, the geochemical features of sedimentary rocks which formed from the Japan Sea at these ages have been studied by the author because they are better indicator of age of hydrothermal activities than those of hydrothermally altered igneous rocks because the samples of continuous age of sedimentation are able to be collected and the ages are precisely determined based on microfossil data (foraminiferal, radioralian and diatom assemblages). [Pg.213]

As for the mineralization at the middle Miocene age in the Northeast Japan, Kuroko and epithermal base-metal veins have been formed. No enrichment of Sn and W is found in these deposits. [Pg.231]

Obira deposit is located at south Kyushu. It occurs in Shimanto Group rocks composed of shale, and limestone, associated with middle Miocene granitic intrusive rocks. Polyascendant zoning and mineralization are observed in the Obira deposit. From early- to late-stage mineralizations are ... [Pg.240]


See other pages where Middlings minerals is mentioned: [Pg.54]    [Pg.457]    [Pg.21]    [Pg.54]    [Pg.457]    [Pg.21]    [Pg.3]    [Pg.314]    [Pg.394]    [Pg.394]    [Pg.401]    [Pg.403]    [Pg.406]    [Pg.550]    [Pg.322]    [Pg.358]    [Pg.85]    [Pg.305]    [Pg.432]    [Pg.1783]    [Pg.1787]    [Pg.23]    [Pg.58]    [Pg.630]    [Pg.326]    [Pg.118]    [Pg.1334]    [Pg.174]    [Pg.119]    [Pg.4]    [Pg.202]    [Pg.206]    [Pg.226]    [Pg.233]    [Pg.235]   
See also in sourсe #XX -- [ Pg.651 ]




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Middlings

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