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Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid.Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens.It is occasionally found in native form as elemental crystals.
Bismuth telluride melt veinlets have been noted in the South Range deposits of the Sudbury Basin; they are noted as a collector of PGE minerals in low-sulphide deposits. The evaluation of gold deposits worldwide has led to many studies of the bismuth tellurides and their contributions to the concentrations of gold and platinum group elements.
The gold telluride ores occur with silver, or with silver, lead and antimony, or as native gold accompanied by other tellurides. These ores are often sent direct to the smelters for treatment. A fifth type is the disseminated ore type. They are often low in grade but large. They fill large fracture and fault zones or replace certain geologic ...
Native gold is an element and a mineral. It is highly prized by people because of its attractive color, its rarity, resistance to tarnish, and its many special properties - some of which are unique to gold. No other element has more uses than gold. All of these factors help support a price of gold that is higher than all but a few other metals.
May 29, 2020· High-grade gold, palladium, and platinum values ranging to 16.18 g/t 3E (13.80 g/t Au, 1.10 g/t Pd, and 1.28 g/t Pt) were returned in rock samples taken by Group Ten in 2019 at the Pine target, with a total of 13 samples returning from 2 to 30 g/t platinum equivalent grade mineralization to .
Jan 02, 2011· Common Telluride ores are: Calaverite - can assay from 20- 70% gold and it is easy to recover Hessite - Resembles Petzite. Usually about 60% silver Petzite - A telluride that is mostly silver. Silver content is usually twice that of gold. Sylvanite - A telluride of gold and silver. It can assay as high as 20% gold Altaite - telluride of silver/gold
17. Generalized map of faults in the area south of Telluride. 18. Sketch map showing surface geology and underground work ings in area between Silver Lake Basin and Bridal Veil Canyon. 19. Geologic maps of some mines in the area tributary to Bridal Veil Creek. 20. Geologic map of some mines along Bear Creek and in La Junta Basin. 21.
ly, which is for sale in microfiche from the U.S. Geological Survey, Books and .... Nickel-molybdenum-platinum-gold deposits in black shales of southern China-A... here - Toronto Geological Discussion Group. ... Photos of gold ores, quartz, telluride gold ore and gold specimens.
Most widespread minerals containing Platinum; This list of minerals containing Platinum is built from the mindat locality database. This is based on the number of localities entered for mineral species and is therefore slanted towards minerals interesting to collectors with less coverage of common rock-forming-minerals so it does not give an undistorted distribution of Platinum mineral ...
Geologic Photos Platinum Gold Telluride. A relatively rare element tellurium is tied with platinum and palladium as the 71st most abundant element in earths crust tellurium belongs to the chalcogen chemical family along with oxygen sulfur selenium and polonium oxygen and sulfur are nonmetals polonium is a metal and selenium and tellurium are metalloids however selenium and tellurium are often ...
Telluride minerals such as calaverite, are also important silver ores in some mining districts. This sample of rich gold and silver ore comes from the Cripple Creek district in Colorado. The mossy metallic colored mineral on this specimen is calaverite, a mineral rich in both gold and silver.
Gold occurs in nature mainly as the metal and as various alloys. It forms complete series of solid solutions with silver, copper, nickel, palladium, and platinum. In association with the platinum metals, gold occurs as free gold as well as in solid solution. The native elements contain the most gold, followed by the sulfide minerals. Several gold tellurides are known, but no gold selenides ...
Toma S A, Murphy S (1978) Exsolution of gold from detrital platinum-group metal grains in the Witwatersrand auriferous conglomerates, The Canadian Mineralogist, 16, 641-650 Naldrett A J, Hoffman E L, Green A H, Chou C L, Naldrett S R, Alcock R A (1979) The composition of Ni–sulfide ores, with particular reference to their content of PGE and ...
The writer wishes to express his thanks to Mr. E. B. Eckel of the U. S. Geological Survey for the use of the La Plata collection, to Mr. R. D. Hoffman, Mining Geologist, New York City, for the specimens from Cripple Creek, and to the managements of the Lake Shore, Toburn, Wright-Hargreaves, Macassa and Dome mines for the specimens from those ...
Jun 03, 2020· Northstar makes the comparison of the gold mineralization on the property as being similar to that of Kirkland Lake Gold's Macassa South Mine Complex, just to the northwest. "Northstar knew the Miller Gold Property hosts significant high-grade gold-telluride mineralization that is stacked and flat-lying," said company president Brian Fowler ...
1. The Hotel Collection: Valid for new bookings with participating providers of at least two consecutive nights made through Platinum Travel Service, Business Platinum Travel Service, Centurion Travel Service, amextravel or any American Express Travel location. Available only for the following U.S. American Express Card Members: Consumer and Business Gold Card Members, Classic Business ...
Dec 06, 2019· Other sources can include flue dust and gases produced during lead, bismuth, gold, nickel and platinum smelting. Such anode sludges, which contain both selenides (a major source of selenium) and tellurides, often have a tellurium content of more than 5% and can be roasted with sodium carbonate at 932°F (500°C) to convert the Telluride to ...
brilliant Native Gold, including several clusters. The Gold is very lustrous and easily visible against the darker brown background. The is a cabinet sized plate and would make a great addition to a Colorado suite! From the Telluride District (Upper San Miguel District), San .
Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78. It is a dense, malleable, ductile, highly unreactive, precious, gray-white transition metal. Its name is derived from the Spanish term platina, which is literally translated into "little silver".Platinum is a member of the platinum group of elements and ...
Aug 08, 2019· Thank you I appreciate your input about your comment no free gold. MMMM ? Maybe these pics dont look the same on different devices or im confused on what free gold looks like in this ore /rock specimen anyways here is 2 more closer up pics 1st pic and the 6th pc and just a few spots I put arrows or circled where I see free gold but, I thought /think there is gold (alot all over ) but heck I ...
Oct 24, 2013· Geologic map of the Telluride quadrangle, southwestern Colorado (NGMDB) Metadata Updated: October 24, 2013. This record is maintained in the National Geologic Map Database (NGMDB). The NGMDB is a Congressionally mandated national archive of geoscience maps, reports, and stratigraphic information, developed according to standards defined by the ...
estimation of gold, platinum, palladium and silver in rocks and ores by ICP-MS for geochemical exploration, Atomic Spectro, 18 ... D V & Balaram V, Determination of gold in rocks, ores and other geological materials by flame and graphite furnance atomic absorption spectrometry techniques, Atomic Spectro, 22 (2001) 263.
The San Juan Mountains are a high and rugged mountain range in the Rocky Mountains in southwestern Colorado and northwestern New Mexico.The area is highly mineralized (the Colorado Mineral Belt) and figured in the gold and silver mining industry of early Colorado. Major towns, all old mining camps, include Creede, Lake City, Silverton, Ouray, and Telluride.
The most prominent is native gold - most of the native gold contains a small amount of silver, copper, platinum, etc. Telluride minerals are the most common minerals which contain significant gold in their make up. They include: Petzite (Ag,Au) 2,Te, with a gold content of about 25 per cent.
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