selenium ore gold

  • Selenium stories | Nature Chemistry

     · Selenium is a semi-metallic element that belongs to the family of chalcogens (group 15). Placed just between sulfur and tellurium in that column of …

  • Deselenization and detellurization of precious-metal ore ...

     · A new technique of swelling oxidizing roasting and alkaline leaching was proposed for deselenization and detellurization of precious-metal ore concentrates. Alkali-metal and alkaline-earth-metal chlorides and carbonates were preliminarily selected as swelling agents. The roasting removal rate and alkaline leaching rate of selenium and tellurium were investigated, and NaCl was selected as an ...

  • Native Selenium (Se)

    Most elemental selenium comes from the refining of copper sulfides as selenium is a common trace element in these minerals. There is no real ore of selenium as these minerals, including native selenium, are far too rare. These are some other minerals that contain selenium as a major component: Berzelianite (Copper Selenide)

  • Selenium | chemical element | Britannica

    Selenium is a common component of ores valued for their content of silver or copper; it becomes concentrated in the slimes deposited during electrolytic purification of the metals. Methods have been developed to separate selenium from these slimes, which also contain some silver and copper.

  • Commodities

    Commodities in Elite: Dangerous - Average prices, maximum profit and station coverage

  • 17

    Flotation of Gold Ores 17.1 INTRODUCTION ... copper, tellurium, antimony, selenium, platinum group metals and silver. In massive sulphide ores, gold may occur in several of the above forms, which affects flotation recovery. During flotation of gold-bearing massive sulphide ores, …

  • Selenium: Contrary Stuff | Seeking Alpha

     · Selenium and tellurium, however, are usually just two of such byproducts from copper and lead ores, with gold and silver (and, sometimes, palladium and platinum) being usually equally, if …

  • Treatment of gold and silver ores as found in the …

    The character of this ore is such that the bullion is about 30% gold, the remainder being silver. The first class ore is what is called rebellious ore, because mixed intimately with all of the sulphides. The second and third class ores are mixed with very little of the sulphides, -- these last two classes are treated by one treatment. The first ...

  • Ore minerals in the telluride-bearing gold-silver ores of ...

    Ore minerals in the telluride-bearing gold-silver ores of Salida, Indonesia, with special reference to the distribution of selenium. C. Kieft 1 & I. S. Oen 1 Mineralium Deposita volume 8, pages 312–320 (1973)Cite this article

  • Natural resources

    iron ore, chromium, copper, gold, nickel, platinum and other minerals, and coal and hydrocarbons have been found in small noncommercial quantities; mineral exploitation except for scientific research is banned by the Environmental Protocol to the Antarctic Treaty; krill, icefish, toothfish, and crab have been taken by commercial fisheries ...

  • Ore minerals

    Some primary "ore" may contain up to 200 ppm. Ga. Germanium - A byproduct of zinc ore processing. Also a deposit in China is associated with coal. Gold - The primary mineral of gold is the native metal and electrum (a gold-silver alloy). Some tellurides are also important ore minerals such as calaverite, sylvanite, and petzite.

  • Minerals | Free Full-Text | Mining-Related Selenium ...

    Mining and processing of metallic ore deposits release selenium into the environment through waste rock disposal and tailings produced at the mine site. In metallic ore deposits, selenium is associated with sulfur-containing ores, such as pyrite, sphalerite, chalcopyrite, and other sulfides. ... Japan). The Pogo deposit is a gold sulfide ore ...

  • Gold Smelting & Refining Process

     · Gold content (oz/t) = gold weight (mg) x [29.166/sample weight (g)] Gold Refining Book. For example, if the fire assay reported 0.1 mg of gold and the initial weight of sample was 20 g, the gold content is 0.14583 oz/t or 4.54 g/t. Smelting-Ore-in-Electric-Furnace gold smelting

  • USGS Mineral Resources On-Line Spatial Data

    Estimates of the number and size of undiscovered mineral deposits in the US containing gold, silver copper, lead, and zinc. Global assessment of undiscovered copper resources. Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.

  • Selenium

    Selenium as black, semi-metallic crystals (EDS-analysed) on partly limonite-coated quartz (on country rock matrix). The sample is unusual since selenium has previously only been found in the dark violet to black fluorite material ("Stinkspat") (Gröbner et al., 2005, 2006). Collected by Mr. Dielissen.

  • Selenium | Minerals Education Coalition

    Selenium minerals are rare, and although selenium-rich ores exist, few are mined exclusively for the element. Most selenium is obtained as a by-product of copper ore processing. Selenium is occasionally found in pure form. It occurs in the rare minerals clausthalite and crooksite. Despite the name, the mineral selenite actually contains no ...

  • Tellurium and Selenium Mineralogy of Gold Deposits in ...

    Mineralization of Te and Se was found in gold deposits and uranium occurrences, located in the Paleoproterozoic greenstone belts in Northern Fennoscandia. These deposits are of different genesis, but all of them formed at the late stages of the Svecofennian orogeny, and they have common geochemical association of metals Au, Cu, Co, U, Bi, Te, and Se. The prevalent Te minerals are Ni and Fe ...

  • Selenium ore concentrating

    Determination of the selenium contents of waste rocks of . Determination of the selenium contents of waste rocks of iron ore mining in the Pilbara, Western Australia using ICP-MS 237921_Rajabian Tabesh.pdf (2 .291Mb) Access Status Open access Authors Rajabian Tabesh, Donya Date 2014 Supervisor Dr David Type ...

  • 6-Processing of Mercury-Stibium Gold Bearing Ore of ...

    and gold which content is already more than 2 g/t in the ore. There are about 6.9 million tons of gold ore and 14 tons of gold in it. Gold in these ores is presented in the form of nanoscale particles. Size of individual gold particles is about 2.8 μm. All these predetermine the research on complex processing of the ores. The technology of complex

  • How is Sodium Cyanide Consumed during Gold Cyanidation ...

     · (4) If the raw gold ore contains arsenopyrite, mercury, selenium and tellurium, they will all react with sodium cyanide. When the deposit contains carbonaceous rock, especially organic carbon, its adsorbability for sodium cyanide is stronger, making it difficult for the cyanide leaching of gold. 3.Cyanide Hydrolysis

  • Obsolete Computers, "Gold Mine," or High-Tech Trash ...

    average gold ore feed grade of 0.9 g/t for a typical gold openpit cyanide leaching operation in Nevada with an overall 67 percent gold recovery. 2Based on a 2.7:1 waste-to-ore ratio. U.S. Department of the Interior U.S. Geological Survey Figure 1. Circuit boards are sought after by recyclers for their metals content, especially gold and silver.

  • Technical Note

    Selenium Behaves similarly to tellurium. Sulfur (Sulfides) Can cause problems by forming mattes with copper, nickel or iron compounds, resulting in low gold recoveries. Will also produce large lead buttons if using a high litharge flux. This can be controlled by adding a …

  • Selenium in Some Canadian Sulfides

    distribution of selenium in a single ore deposit. The low to negligible selenium content of gold quartz deposits is attrib- uted to selenium-poor magmatic sources and/or wall rocks. In marked contrast to the selenium-rich uranium ores of the Colorado plateau are the low-selenium siderite ores of Michipicoten, also associated with tuffs,

  • Precious Metals/Fire Assaying | Hazen Research

    Hazen offers a full suite of services to those interested in assaying for precious metals and platinum group metals (PGMs). Please Contact us to obtain a quote for fire or gold assay, and to learn more about our PGM services and capabilities. Hazen''s modern fire assay facility permits rapid turnaround time and a high rate of production. Hazen performs fire assay for analytical

  • Smelting and Roasting Ores to recover gold, silver and ...

    This is a concern because Arsenic is actually very common in many gold ores. Selenium, mercury and other toxic elements are also found in many high sulfide gold and silver ores as well. To roast sulfide ores, it takes a good red heat and a good amount of air, but not too hot as you don''t want to melt them.

  • Copper extraction

    Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

  • Selenium removal from mining and process wastewater: a ...

    Selenium can be emitted to the environment after mining activities. For example, selenides are commonly found in the ores of copper, lead and nickel, and can, therefore, be refined from these ores. In parallel, selenium can also be discharged as a by-product after the extraction of these elements.

  • Selenium: Contrary Stuff | ETF

    Selenium and tellurium, however, are usually just two of such byproducts from copper and lead ores, with gold and silver (and, sometimes, palladium and platinum) being usually equally, if not more ...

  • List of ore by zone

     · This is a list of all Ore by area. The recommended character level is listed as well as the recommended Mining level. The ore levels are given to the point of where the deposits turn green. So Copper will have a ore level of 1-49. The recommended level is given by what levels in Mining will allow you to still mine a large amount of yellow and orange ranked ore.

  • Extraction of Gold from Platinum Group Metal Ores ...

     · 2. Gold Extraction from Secondary Sources. The amount of gold that is recycled in the world is substantial and was estimated to be 150 t in 2014 (U.S. Geological Survey, 2015a, U.S. Geological Survey, 2015b).The main sources of scrap gold in the USA include discarded jewelry, scrap from jewelry manufacture, dental scrap, plating-bath solutions, scrapped electronic equipment, and gold …

  • Mineral Concentrate Marketing

     · In treating ores of these base metals, containing gold and silver, the ore in the mine is the raw material and the refined bars of gold, silver, lead, copper, and zinc are the finished product, as far as the metallurgist is concerned. ... Selenium: Smelter by-product: Diversified use in glass & ceram. ics—color and decoloring agent ...

  • Solenium Ore

    Comment by Allenone This is one of 6 ores in Shadowlands. Similar to previous expansions; some of these ores are zone specific. Elethium Ore can be found in The Maw; Laestrite Ore can be found in Bastion, Ravendreth, Ardenweald, and Maldraxxus; Solenium Ore can be found in Bastion; Sinvyr Ore can be found in Ravendreth; Phaedrum Ore can be found in Ardenweald ...

  • Rebellious Ores: Sulfides, Selenides and Tellurides

    Gold and silver contained inside some sulfides amalgamates poorly, and in those early days, amalgamation was the chief recovery method for hard rock ores. The old timers developed the pan processes where they ground up the ore and amalgam mixture for hours at a time (the Washoe Process), and for some ores that did the job.

  • Where To Mine In Elite Dangerous – Ed Mining

    Directly from the referenced Reddit post: It is worth the time to go to HIP 16572. The planet is B 8 Ring B. It has 42 hotspots: 5 Alexandrite, 4 Bromellite, 9 Grandidierite, 6 Low Temperature Diamonds, 8 Void Opals and 10 Trition. Multiple Triple and Quadruple Overlays. It is the Motherlode of mining!

  • Selenium | History, Uses, Facts, Physical & Chemical ...

    The most common ore of selenium are the sulfide ores. In mineral form, selenium is present in the form of selenite or selenide compounds. Selenium is also found in amino acids in living organisms, where it exists in the form of seleno-methionine, and selenocysteine [2]. High amount of selenium …

  • NATURE CURES

    A - Z OF MINERALS . NOTE: Some nutrients in this section are measured in µg which is the abbreviation for microgram and is equivalent to a unit of mass equal to one millionth (1×10−6) of a gram or one thouh (1×10−3) of a milligram.One IU is the biological equivalent of 0.3 μg or 0.3 micrograms. See also The A-Z of organic nutrients. A ...

  • Extraction of gold from platinum group metal (PGM) ores ...

     · Pure gold is seldom obtained on the first precipitation; the main objective is to remove all the gold from the high-value stream. Hydrazine as the hydrochloride is an effective reducing agent for gold in the presence of significant concentrations of metalloids such as selenium and tellurium.

  • Metals, Minerals, Ores and Mining Testing, Mineral Science ...

    outsource mining laboratories to perform all your mining, metals, ores and mineral science testing, research, experiments, surveys, inspections, engineering, core ...

  • Iron-Oxide Copper Gold Deposits | INN

    IOCG ore bodies range from around 10 million tonnes of contained ore, to 4,000 million tonnes or more, and have a grade of between 0.2 percent to 5 percent copper, with gold contents ranging from ...