Mercury ores

Mercury ore deposits occur in faulted and fractured rocks, such as limestone, calcareous shales, sandstones, serpentine, chert, andesite, basalt, and rhyolite. Deposits are mostiy epithermal in character, ie, minerals were deposited by rising warm solutions at comparatively shallow depths from 1—1000 m (6). 

Ore. The assay of mercury ores is not simple, owing to the difficulties encountered in obtaining representative ore samples. Crystalline cinnabar is extremely brittie causing it to break loose from adjacent rock and fall into the sample being collected. This uncontrollable salting of the sample can give results as much as several hundred percent over the actual mercury content of the sample. 

Quick-erz, n. mercury ore. -gold, n. gold amalgam. -metall, n, amalgamated metal. -mUhle, /. amalgamating mill, -wasser, n. Plating) quickening liquid (solution of a mercuric salt). 

C02-0032. Liquid mercury metal can be obtained from a mercury ore called cinnabar simply by heating the ore in air. There is a significant mass loss when this process occurs. How can this mass loss be reconciled with conservation of mass ... 

Mercury is also found in black metacinnabar and mercury chloride. Small hquid droplets of mercury may be visible in high-grade deposits. Mercury ores are also found in Algeria, Mexico, Bosnia, and Canada as well as in Spain and California. 

Mercuric sulfide (HgS) is a fine, very brilhant scarlet powder that is deadly if ingested. Also known as the mercury ore cinnabar and metacinnabar, it is used as a pigment in the manufacture of paints. 

Perhaps it was only natural that people steeped in Greek philosophy would think of trying to make gold when they encountered the rich Egyptian tradition of practical chemistry. Hadn t Aristotle said that transformations were possible Isn t that what happened when, for example, cinnabar (mercury ore) was heated Heating the red material, cinnabar, caused a pool of liquid metal to form. Didn t other chemical transformations take place when substances were heated, dissolved, melted, filtered, and crystallized ... 

Apuadoa miues, Spain, 67 . amidti chloride of, 680. analyses of mercurial compounds 559, assay of mercurial ores, 670. atoiuic weight, 667. 

In the duchy of Deux-Ponts, mercurial ores, mixed with lime, are heated in earthenware retorts furnished... 

Method pursued at Lansberg,—One other metallurgy apparatus for the reduction of mercurial ores,... 

Purification of Mercury,—If, as Is sometimes the case,the mercurial ore contamsbismuthorzinc, portions of those metals will be carried over with the distillate, Lead, antimony, and tin, may also be present as adul-... 

Analysis of Mercurial Matters.—Already a short description of the method of analysis pursued in determining the richness of mercurial ores has been given, and although the system of analysis to which reference will now be made is analogous te that described, still, since it is more applicable to mercurial compounds in general, it deserves a short space here. It is known as Millon s method, and is conducted as follows —... 

However chemical methods of mercury detoxification are far from adequate. It has become evident that mercury can be solubilized from HgS under conditions that could be present in a landfill. We have demonstrated chemical solubilization followed by volatilization with Fe2(S04)3, a product of oxidation of FeS04 (pyrite) by Thiobacillus ferrooxidans (data not shown). Other researchers have indicated that T. ferrooxidans can facilitate solubilization and volatilization of Hg° from HgS. Growth of T. ferrooxidans in the presence of cinnabar (mercury ore-contains HgS and some impurities) by Silver and Torma (1984) resulted in dissolved mercury concentration in the bioreactor of 64 mg/L (the form of Hg was not given). In similar experiments with T. ferrooxidans and cinnabar, Baldi and Olson (1987) did not... 

The ore in conecntraied to about 25- 50 4 mercury ty dotation. Beneticiaiion of mercury ores is noi commonly practiced. The cnnccDiriiiu... 

The mercury ore cinnabar (HgS) was used to make the bright red paint used by Renaissance painters. What is the weight of 50 molecules of cinnabar ... 

On distilling mercury ore, see ibid., 285-86. On making and using aqua fortis, or "parting acid," see ibid., 131-61. Recipes for aqua fortis also appeared in the Italian Benvenuto Cellini s treatise on goldsmithing and sculpture, Benvenuto... 

Mercury has been used by humans since antiquity. More than 10,000 years ago, prehistoric humans used the bright red stone of mercury ore (cinnabar, mercury sulphide, HgS) to color cave drawings. Theofrastos, the disciple of Aristotle, described the production of metallic mercury from cinnabar. Egyptians and Ro-... 

Emissions from mercury ore processing facilities and mercury chlor-alkali plants Emissions from sludge incineration plants, sludge drying plants, or a combination of these that process wastewater treatment plant sludge... 

Mercury is a naturally occurring metal found throughout the environment as the result of normal breakdown of minerals in the earth s crust by weathering processes involving wind and water. With the exception of mercury ore deposits, the amount of mercury that naturally exists in any one place is usually very low. Natural phenomena such as... 

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